293 lines
15 KiB
JSON
293 lines
15 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-2024-46737",
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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": "2024-09-11T15:12:18.257Z",
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"datePublished": "2024-09-18T07:11:59.300Z",
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"dateUpdated": "2026-08-05T11:38:13.852Z"
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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": "2026-08-05T11:38:13.852Z"
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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\nnvmet-tcp: fix kernel crash if commands allocation fails\n\nIf the commands allocation fails in nvmet_tcp_alloc_cmds()\nthe kernel crashes in nvmet_tcp_release_queue_work() because of\na NULL pointer dereference.\n\n nvmet: failed to install queue 0 cntlid 1 ret 6\n Unable to handle kernel NULL pointer dereference at\n virtual address 0000000000000008\n\nFix the bug by setting queue->nr_cmds to zero in case\nnvmet_tcp_alloc_cmd() fails."
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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:N/I:N/A:H",
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"baseScore": 7.5,
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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 vulnerable code is `nvmet_tcp_install_queue()` in the NVMe-over-TCP target driver, reached directly from an NVMe Fabrics Connect capsule received on the target's listening TCP socket (default port 4420). A remote initiator anywhere on the network triggers it with ordinary NVMe/TCP protocol traffic.\nAC:L - The attacker deterministically forces the allocation failure by setting `sqsize` in the admin Connect command, which since commit 143667ee9a9c is unbounded for qid 0, making `kcalloc(131072, sizeof(struct nvmet_tcp_cmd))` exceed MAX_PAGE_ORDER and return NULL every time; on older branches the same is achieved with parallel max-size connections. No race, no memory-layout condition, and no state outside the attacker's control is involved.\nPR:N - `nvmet_install_queue()` runs inside the admin Connect handler before any DH-HMAC-CHAP authentication exchange, and `nvmet_host_allowed()` returns true unconditionally for the discovery subsystem exposed by every nvmet-tcp port. An entirely unauthenticated remote peer with TCP reachability can drive the path.\nUI:N - The crash is triggered purely by attacker-sent NVMe/TCP capsules followed by closing the connection. No action by any local user or administrator is required.\nS:U - The NULL dereference occurs in a kernel workqueue context and its impact is confined to the kernel on the target host, with no crossing into another security authority such as a hypervisor or IOMMU boundary.\nC:N - The fault is a read of `cmd->req.cmd` at fixed address NULL+0x8 that oopses on the very first loop iteration; a remote TCP peer has no means to map the zero page, so no kernel data is read back or disclosed to the attacker.\nI:N - Execution stops at the faulting read before reaching the later `nvmet_tcp_free_cmd_buffers()` stores, and the dereferenced address is a fixed unmapped low address rather than attacker-controlled memory, so nothing is modified or corrupted.\nA:H - The result is a kernel NULL pointer dereference oops in the `nvmet_tcp_wq` kworker — a full panic on systems with `panic_on_oops` — repeatable at will by an unauthenticated remote attacker, and each attempt additionally leaks the queue allocation, socket file reference and IDA index."
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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/nvme/target/tcp.c"
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],
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"versions": [
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{
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"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
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"lessThan": "03e1fd0327fa5e2174567f5fe9290fe21d21b8f4",
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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": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
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"lessThan": "50632b877ce55356f5d276b9add289b1e7ddc683",
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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": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
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"lessThan": "91dad30c5607e62864f888e735d0965567827bdf",
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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": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
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"lessThan": "7957c731fc2b23312f8935812dee5a0b14b04e2d",
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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": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
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"lessThan": "489f2913a63f528cfe3f21722583fb981967ecda",
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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": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
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"lessThan": "6c04d1e3ab22cc5394ef656429638a5947f87244",
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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": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
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"lessThan": "5572a55a6f830ee3f3a994b6b962a5c327d28cb3",
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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/nvme/target/tcp.c"
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],
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"versions": [
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{
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"version": "5.0",
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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": "5.0",
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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": "5.4.284",
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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": "5.10.226",
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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": "5.15.167",
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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": "6.1.110",
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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": "6.6.51",
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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": "6.10.10",
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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",
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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": "5.0",
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"versionEndExcluding": "5.4.284"
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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": "5.0",
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"versionEndExcluding": "5.10.226"
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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": "5.0",
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"versionEndExcluding": "5.15.167"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.0",
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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": "5.0",
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"versionEndExcluding": "6.6.51"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.0",
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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/03e1fd0327fa5e2174567f5fe9290fe21d21b8f4"
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},
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{
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"url": "https://git.kernel.org/stable/c/50632b877ce55356f5d276b9add289b1e7ddc683"
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},
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{
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"url": "https://git.kernel.org/stable/c/91dad30c5607e62864f888e735d0965567827bdf"
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},
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{
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"url": "https://git.kernel.org/stable/c/7957c731fc2b23312f8935812dee5a0b14b04e2d"
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},
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{
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"url": "https://git.kernel.org/stable/c/489f2913a63f528cfe3f21722583fb981967ecda"
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},
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{
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"url": "https://git.kernel.org/stable/c/6c04d1e3ab22cc5394ef656429638a5947f87244"
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},
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{
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"url": "https://git.kernel.org/stable/c/5572a55a6f830ee3f3a994b6b962a5c327d28cb3"
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}
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],
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"title": "nvmet-tcp: fix kernel crash if commands allocation fails",
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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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"timestamp": "2024-09-29T14:52:30.516681Z",
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"id": "CVE-2024-46737",
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2024-09-29T14:52:46.426Z"
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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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"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.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": "2025-11-03T22:17:20.599Z"
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}
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}
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]
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}
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} |