248 lines
13 KiB
JSON
248 lines
13 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-2024-47682",
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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": "2024-09-30T16:00:12.941Z",
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"datePublished": "2024-10-21T11:53:24.460Z",
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"dateUpdated": "2026-08-05T11:39:26.150Z"
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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": "2026-08-05T11:39:26.150Z"
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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: sd: Fix off-by-one error in sd_read_block_characteristics()\n\nFf the device returns page 0xb1 with length 8 (happens with qemu v2.x, for\nexample), sd_read_block_characteristics() may attempt an out-of-bounds\nmemory access when accessing the zoned field at offset 8."
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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:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
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"baseScore": 8.6,
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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:N - The out-of-bounds read is driven entirely by the SCSI target's INQUIRY VPD page 0xb1 response, and the sd driver sits on top of network transports (iSCSI over TCP/3260, SRP, FCoE) where that response arrives from a remote peer. A malicious or compromised target — or an attacker spoofing/MITM'ing a commonly-unauthenticated iSCSI session — supplies the short page directly over the network.\nAC:L - The target simply reports page 0xb1 with a page length of 4 (total length 8), which makes vpd->len == 8 pass the `< 8` check and the read of data[8] occur deterministically on every probe/rescan. This is a real-world occurrence (qemu 2.x), requiring no timing, layout, or race conditions.\nPR:N - The remote target holds no privileges on the initiator host; the malformed VPD page is consumed unconditionally during device discovery/revalidation with no authentication or capability check on the initiator side. iSCSI is frequently deployed without CHAP, so no credentials are needed.\nUI:N - No operator action is required — sd_revalidate_disk() runs automatically on probe, on iSCSI session reconnect, and on rescan, so the attacker-controlled response is parsed without any victim interaction.\nS:U - The OOB read and its consequences are confined to the kernel's own memory and the SCSI/block layer's data structures; no security authority boundary such as a VM or IOMMU boundary is crossed.\nC:L - The read is strictly bounded to a single byte at a fixed offset past the VPD data, and only bits 4-5 of it become observable, surfacing through /sys/block/sdX/device/zoned_cap and the dmesg classification message. The attacker cannot scan or seek to arbitrary memory, so the disclosure of uninitialized heap content is limited.\nI:L - Uninitialized/out-of-bounds heap content is written into sdkp->zoned and then used to configure the block device's zoned model via disk_set_zoned(), so uncontrolled data modifies persistent kernel device state. The modification is limited and not attacker-chosen, so it does not amount to an arbitrary write.\nA:H - When the stale byte yields zoned == 1, a normal disk is misclassified as host-aware zoned and sd_zbc_read_zones() fails, driving the error path that sets sdkp->capacity = 0 and zeroes the gendisk capacity — the storage device becomes unusable, which is fatal if it is the boot/root disk. Additionally the access crosses the kmalloc request boundary on 32-bit and under KFENCE/KASAN, producing a slab-out-of-bounds report that panics on panic_on_warn configurations."
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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/scsi/sd.c"
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],
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"versions": [
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{
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"version": "7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac",
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"lessThan": "60312ae7392f9c75c6591a52fc359cf7f810d48f",
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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": "7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac",
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"lessThan": "568c7c4c77eee6df7677bb861b7cee7398a3255d",
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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": "7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac",
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"lessThan": "a776050373893e4c847a49abeae2ccb581153df0",
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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": "7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac",
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"lessThan": "413df704f149dec585df07466d2401bbd1f490a0",
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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": "7fb019c46eeea4e3cc3ddfd3e01a24e610f34fac",
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"lessThan": "f81eaf08385ddd474a2f41595a7757502870c0eb",
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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/scsi/sd.c"
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],
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"versions": [
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{
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"version": "5.19",
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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": "5.19",
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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": "6.1.113",
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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": "6.6.54",
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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": "6.10.13",
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"lessThanOrEqual": "6.10.*",
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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": "6.11.2",
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"lessThanOrEqual": "6.11.*",
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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",
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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": "5.19",
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"versionEndExcluding": "6.1.113"
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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": "5.19",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.19",
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"versionEndExcluding": "6.12"
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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/60312ae7392f9c75c6591a52fc359cf7f810d48f"
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},
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{
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"url": "https://git.kernel.org/stable/c/568c7c4c77eee6df7677bb861b7cee7398a3255d"
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},
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{
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"url": "https://git.kernel.org/stable/c/a776050373893e4c847a49abeae2ccb581153df0"
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},
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{
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"url": "https://git.kernel.org/stable/c/413df704f149dec585df07466d2401bbd1f490a0"
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},
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{
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"url": "https://git.kernel.org/stable/c/f81eaf08385ddd474a2f41595a7757502870c0eb"
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}
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],
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"title": "scsi: sd: Fix off-by-one error in sd_read_block_characteristics()",
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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-2024-47682",
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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": "2024-10-21T13:07:09.255382Z"
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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": "2024-10-21T13:14:16.478Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T22:20:47.796Z"
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}
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}
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]
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}
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} |