319 lines
17 KiB
JSON
319 lines
17 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-39998",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-04-16T07:20:57.151Z",
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"datePublished": "2025-10-15T07:58:22.354Z",
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"dateUpdated": "2026-10-15T22:02:35.977Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:07:00.453Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: target_core_configfs: Add length check to avoid buffer overflow\n\nA buffer overflow arises from the usage of snprintf to write into the\nbuffer \"buf\" in target_lu_gp_members_show function located in\n/drivers/target/target_core_configfs.c. This buffer is allocated with\nsize LU_GROUP_NAME_BUF (256 bytes).\n\nsnprintf(...) formats multiple strings into buf with the HBA name\n(hba->hba_group.cg_item), a slash character, a devicename (dev->\ndev_group.cg_item) and a newline character, the total formatted string\nlength may exceed the buffer size of 256 bytes.\n\nSince snprintf() returns the total number of bytes that would have been\nwritten (the length of %s/%sn ), this value may exceed the buffer length\n(256 bytes) passed to memcpy(), this will ultimately cause function\nmemcpy reporting a buffer overflow error.\n\nAn additional check of the return value of snprintf() can avoid this\nbuffer overflow."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerability is triggered by read(2) on a configfs attribute file at /sys/kernel/config/target/core/alua/lu_gps/<gp>/members, which requires local access to the system. There is no network-facing path into target_lu_gp_members_show().\nAC:L - The over-read is fully deterministic — once an HBA+device name pair exceeding 255 combined characters exists, every read of the members file executes memcpy() with a length larger than the 256-byte stack source, with no race or memory-layout dependency.\nPR:L - The members attribute is CONFIGFS_ATTR_RO (mode 0444) under 0755 configfs directories, so any unprivileged local account — or a container with /sys bind-mounted read-only — can perform the triggering read; only the pre-existing long backstore name is admin-created state, not a privilege the attacker must hold.\nUI:N - Exploitation is a single read() by the attacker with no victim action required. No administrator or other user must be induced to do anything at exploit time.\nS:U - The out-of-bounds read and the resulting disclosure/panic are confined to the kernel's own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - Up to ~65 bytes of kernel stack memory adjacent to buf[256] are copied into the configfs page and returned to userspace, plausibly leaking the stack canary, saved registers, and kernel/list pointers that defeat KASLR and stack protector. This is well beyond a \"few bytes\" bounded read.\nI:N - The (cur_len + len) > PAGE_SIZE check correctly bounds the memcpy destination inside the get_zeroed_page() buffer, so no kernel memory is written out of bounds and no write or control-flow primitive is produced.\nA:H - With CONFIG_FORTIFY_SOURCE (default in distro kernels) the runtime source-size check in fortify_memcpy_chk() fires and calls fortify_panic(), producing a kernel BUG/panic; KASAN builds BUG as well, and the attacker can trigger this at will by re-reading the file."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/target/target_core_configfs.c"
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],
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"versions": [
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "e6eeee5dc0d9221ff96d1b229b1d0222c8871b84",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "764a91e2fc9639e07aac93bc70e387e6b1e33084",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "ddc79fba132b807ff775467acceaf48b456e008b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "f03aa5e39da7d045615b3951d2a6ca1d7132f881",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "53c6351597e6a17ec6619f6f060d54128cb9a187",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "4b292286949588bd2818e66ff102db278de8dd26",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "a150275831b765b0f1de8b8ff52ec5c6933ac15d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
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"lessThan": "27e06650a5eafe832a90fd2604f0c5e920857fae",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/target/target_core_configfs.c"
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],
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"versions": [
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{
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"version": "2.6.38",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.38",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.301",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.246",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.195",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.156",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.110",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.51",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.16.11",
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"lessThanOrEqual": "6.16.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.17.1",
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"lessThanOrEqual": "6.17.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "5.4.301"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "5.10.246"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "5.15.195"
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "6.1.156"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "6.6.110"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "6.12.51"
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "6.16.11"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "6.17.1"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.38",
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"versionEndExcluding": "6.18"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e6eeee5dc0d9221ff96d1b229b1d0222c8871b84"
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},
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{
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"url": "https://git.kernel.org/stable/c/764a91e2fc9639e07aac93bc70e387e6b1e33084"
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},
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{
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"url": "https://git.kernel.org/stable/c/ddc79fba132b807ff775467acceaf48b456e008b"
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},
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{
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"url": "https://git.kernel.org/stable/c/e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4"
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},
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{
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"url": "https://git.kernel.org/stable/c/f03aa5e39da7d045615b3951d2a6ca1d7132f881"
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},
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{
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"url": "https://git.kernel.org/stable/c/53c6351597e6a17ec6619f6f060d54128cb9a187"
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},
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{
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"url": "https://git.kernel.org/stable/c/4b292286949588bd2818e66ff102db278de8dd26"
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},
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{
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"url": "https://git.kernel.org/stable/c/a150275831b765b0f1de8b8ff52ec5c6933ac15d"
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},
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{
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"url": "https://git.kernel.org/stable/c/27e06650a5eafe832a90fd2604f0c5e920857fae"
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}
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],
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"title": "scsi: target: target_core_configfs: Add length check to avoid buffer overflow",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-39998",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:56:02.868317Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-15T22:02:35.977Z"
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}
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}
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]
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}
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} |