227 lines
11 KiB
JSON
227 lines
11 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-2024-42314",
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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": "2024-07-30T07:40:12.277Z",
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"datePublished": "2024-08-17T09:09:23.047Z",
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"dateUpdated": "2026-08-05T11:36:36.342Z"
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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": "2026-08-05T11:36:36.342Z"
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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\nbtrfs: fix extent map use-after-free when adding pages to compressed bio\n\nAt add_ra_bio_pages() we are accessing the extent map to calculate\n'add_size' after we dropped our reference on the extent map, resulting\nin a use-after-free. Fix this by computing 'add_size' before dropping our\nextent map reference."
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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 - btrfs is a local filesystem; the vulnerable readahead code is reached via a read() syscall on a compressed file, not over any network protocol.\nAC:L - The UAF requires the extent map to be freed concurrently (e.g. by the extent-map shrinker under memory pressure), but the attacker controls both the compressed reads and the memory pressure and can retry the race indefinitely.\nPR:L - Any local unprivileged user who can read a compressed file on a btrfs mount reaches this path; the user can create their own compressed file, so no elevated privileges are needed.\nUI:N - The attacker triggers the compressed reads and memory pressure themselves; no action by a separate victim is required.\nS:U - The use-after-free corrupts kernel slab memory within the kernel's own security authority; no boundary such as a VM or IOMMU is crossed.\nC:H - A use-after-free gives an attacker influence over the reallocated freed-object contents, which per kernel CNA guidance is treated as enabling arbitrary kernel memory disclosure.\nI:H - A use-after-free enables heap grooming and control over freed-object contents, treated as a High integrity impact for kernel memory corruption.\nA:H - The use-after-free readily causes kernel crashes/oops (KASAN, slab corruption), a High availability impact."
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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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"fs/btrfs/compression.c"
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],
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"versions": [
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{
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"version": "6a4049102055250256623ab1875fabd89004bff8",
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"lessThan": "c1cc3326e27b0bd7a2806b40bc48e49afaf951e7",
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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": "6a4049102055250256623ab1875fabd89004bff8",
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"lessThan": "c205565e0f2f439f278a4a94ee97b67ef7b56ae8",
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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": "6a4049102055250256623ab1875fabd89004bff8",
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"lessThan": "b7859ff398b6b656e1689daa860eb34837b4bb89",
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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": "6a4049102055250256623ab1875fabd89004bff8",
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"lessThan": "8e7860543a94784d744c7ce34b78a2e11beefa5c",
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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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"fs/btrfs/compression.c"
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],
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"versions": [
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{
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"version": "5.16",
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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": "5.16",
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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": "6.1.108",
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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": "6.6.44",
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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": "6.10.3",
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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": "5.16",
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"versionEndExcluding": "6.1.108"
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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": "5.16",
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"versionEndExcluding": "6.6.44"
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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": "5.16",
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"versionEndExcluding": "6.10.3"
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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": "5.16",
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"versionEndExcluding": "6.11"
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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/c1cc3326e27b0bd7a2806b40bc48e49afaf951e7"
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},
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{
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"url": "https://git.kernel.org/stable/c/c205565e0f2f439f278a4a94ee97b67ef7b56ae8"
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},
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{
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"url": "https://git.kernel.org/stable/c/b7859ff398b6b656e1689daa860eb34837b4bb89"
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},
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{
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"url": "https://git.kernel.org/stable/c/8e7860543a94784d744c7ce34b78a2e11beefa5c"
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}
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],
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"title": "btrfs: fix extent map use-after-free when adding pages to compressed bio",
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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-2024-42314",
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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": "2024-09-10T16:09:49.130519Z"
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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": "2024-09-12T17:33:04.999Z"
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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": "2025-11-03T22:04:34.301Z"
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}
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}
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]
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}
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} |