321 lines
16 KiB
JSON
321 lines
16 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-2024-56603",
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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": "2024-12-27T14:03:06.012Z",
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"datePublished": "2024-12-27T14:51:08.923Z",
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"dateUpdated": "2026-08-05T11:45:23.876Z"
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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": "2026-08-05T11:45:23.876Z"
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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\nnet: af_can: do not leave a dangling sk pointer in can_create()\n\nOn error can_create() frees the allocated sk object, but sock_init_data()\nhas already attached it to the provided sock object. This will leave a\ndangling sk pointer in the sock object and may cause use-after-free later."
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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:H/A:H",
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"baseScore": 7.8,
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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 defect lives in the `socket(AF_CAN, SOCK_RAW, CAN_RAW)` creation path, reached only through a local syscall via `__sock_create()`; no CAN-bus frame or network data reaches `can_create()`. Consistent with the Bluetooth and af_packet siblings in the same series, which were also scored AV:L because the flaw is in socket setup rather than frame processing.\nAC:L - The only failing `->init` is `raw_init()`'s `alloc_percpu(struct uniqframe)` returning `-ENOMEM`, and an unprivileged local attacker can drive the percpu allocator into failure by spraying percpu-consuming objects (including CAN raw sockets themselves) before retrying `socket()` in a tight loop. This is the same attacker-induced-ENOMEM shape as the af_packet sibling CVE-2024-56606, which was scored AC:L.\nPR:L - `can_create()` performs no `capable()` check at all — unlike af_packet there is no `CAP_NET_RAW` gate — and there is no `net_eq(net, &init_net)` restriction, so any unprivileged local user, including inside an unprivileged user namespace, can reach it. Where `CONFIG_CAN` is modular, `MODULE_ALIAS_NETPROTO(PF_CAN)` lets the unprivileged `socket()` call autoload the module itself.\nUI:N - The attacker performs the entire sequence — memory pressure plus repeated `socket()` calls — from its own process. No victim action, mount, or file open is involved.\nS:U - The freed `struct raw_sock`/`struct sock` and the stale `sock->sk` reference both live entirely within the kernel's own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - Per the use-after-free rubric, the stale `sock->sk` pointing at a freed `raw_sock` in the general kmalloc caches lets an attacker reclaim the slab and read back attacker-shaped or leftover kernel data; the demonstrated consumer for this exact bug class (CVE-2024-40954) is a KASAN-confirmed slab-use-after-free *read* of the freed sock via `__sock_gen_cookie()`.\nI:H - The same dangling reference permits heap spraying of the reclaimed slot, giving control over function-pointer-bearing fields of `struct sock` (`sk_prot`, `sk_destruct`, `sk_wq`) and therefore a control-flow-hijack primitive rather than mere data corruption.\nA:H - Any dereference of the freed `sock->sk` before `iput()` faults or corrupts kernel state, producing an oops or panic; the rubric treats all use-after-free conditions as high availability impact even when only partially exploited."
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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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"net/can/af_can.c"
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],
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"versions": [
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{
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"version": "0d66548a10cbbe0ef256852d63d30603f0f73f9b",
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"lessThan": "884ae8bcee749be43a071d6ed2d89058dbd2425c",
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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": "0d66548a10cbbe0ef256852d63d30603f0f73f9b",
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"lessThan": "ce39b5576785bb3e66591145aad03d66bc3e778d",
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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": "0d66548a10cbbe0ef256852d63d30603f0f73f9b",
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"lessThan": "1fe625f12d090d69f3f084990c7e4c1ff94bfe5f",
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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": "0d66548a10cbbe0ef256852d63d30603f0f73f9b",
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"lessThan": "5947c9ac08f0771ea8ed64186b0d52e9029cb6c0",
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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": "0d66548a10cbbe0ef256852d63d30603f0f73f9b",
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"lessThan": "db207d19adbac96058685f6257720906ad41d215",
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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": "0d66548a10cbbe0ef256852d63d30603f0f73f9b",
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"lessThan": "8df832e6b945e1ba61467d7f1c9305e314ae92fe",
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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": "0d66548a10cbbe0ef256852d63d30603f0f73f9b",
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"lessThan": "811a7ca7320c062e15d0f5b171fe6ad8592d1434",
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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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"net/can/af_can.c"
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],
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"versions": [
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{
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"version": "2.6.25",
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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": "2.6.25",
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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": "5.4.287",
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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": "5.10.231",
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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": "5.15.174",
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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": "6.1.120",
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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": "6.6.66",
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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": "6.12.5",
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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": "6.13",
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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": "2.6.25",
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"versionEndExcluding": "5.4.287"
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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": "2.6.25",
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"versionEndExcluding": "5.10.231"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.13"
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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/884ae8bcee749be43a071d6ed2d89058dbd2425c"
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},
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{
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"url": "https://git.kernel.org/stable/c/ce39b5576785bb3e66591145aad03d66bc3e778d"
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},
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{
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"url": "https://git.kernel.org/stable/c/1fe625f12d090d69f3f084990c7e4c1ff94bfe5f"
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},
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{
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"url": "https://git.kernel.org/stable/c/5947c9ac08f0771ea8ed64186b0d52e9029cb6c0"
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},
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{
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"url": "https://git.kernel.org/stable/c/db207d19adbac96058685f6257720906ad41d215"
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},
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{
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"url": "https://git.kernel.org/stable/c/8df832e6b945e1ba61467d7f1c9305e314ae92fe"
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},
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{
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"url": "https://git.kernel.org/stable/c/811a7ca7320c062e15d0f5b171fe6ad8592d1434"
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}
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],
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"title": "net: af_can: do not leave a dangling sk pointer in can_create()",
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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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-2024-56603",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-02-11T15:42:16.822268Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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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": "2025-02-11T15:45:23.668Z"
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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/2025/03/msg00001.html"
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},
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.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": "2025-11-03T20:50:46.640Z"
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}
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}
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]
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}
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} |