342 lines
17 KiB
JSON
342 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-2024-53174",
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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": "2024-11-19T17:17:25.007Z",
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"datePublished": "2024-12-27T13:49:18.892Z",
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"dateUpdated": "2026-08-05T11:44:21.962Z"
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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": "2026-08-05T11:44:21.962Z"
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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\nSUNRPC: make sure cache entry active before cache_show\n\nThe function `c_show` was called with protection from RCU. This only\nensures that `cp` will not be freed. Therefore, the reference count for\n`cp` can drop to zero, which will trigger a refcount use-after-free\nwarning when `cache_get` is called. To resolve this issue, use\n`cache_get_rcu` to ensure that `cp` remains active.\n\n------------[ cut here ]------------\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 7 PID: 822 at lib/refcount.c:25\nrefcount_warn_saturate+0xb1/0x120\nCPU: 7 UID: 0 PID: 822 Comm: cat Not tainted 6.12.0-rc3+ #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n1.16.1-2.fc37 04/01/2014\nRIP: 0010:refcount_warn_saturate+0xb1/0x120\n\nCall Trace:\n <TASK>\n c_show+0x2fc/0x380 [sunrpc]\n seq_read_iter+0x589/0x770\n seq_read+0x1e5/0x270\n proc_reg_read+0xe1/0x140\n vfs_read+0x125/0x530\n ksys_read+0xc1/0x160\n do_syscall_64+0x5f/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e"
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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 vulnerability is triggered by a read() syscall on the procfs file /proc/net/rpc/*/content (path proc_reg_read → seq_read → c_show); it requires local access, not network reachability.\nAC:L - The attacker controls both sides of the race — populating entries by writing the cache's channel file and dropping their refcount by writing flush, while looping reads of content — so the UAF window can be hit repeatably; per guidance, attacker-controlled races are Low.\nPR:L - In the init namespace content is root-only (mode 400), but an unprivileged user can create a user+network namespace (unshare -Ur; unshare -n) and become root of the fresh per-netns sunrpc caches, gaining read access to content and write access to channel/flush — empirically verified. This is Low, not High.\nUI:N - The attacker performs the cache population, flush, and read entirely on its own; no victim interaction is needed.\nS:U - The use-after-free is confined to the kernel's own memory/authority; no crossing of a security boundary such as VM or IOMMU is involved.\nC:H - The use-after-free lets c_show read fields of a potentially freed and reallocated cache_head and emit them into the content output the attacker reads, enabling disclosure of freed/reused kernel memory.\nI:H - A use-after-free on the cache_head (with cache_check/cache_put operating on freed, potentially reallocated memory) provides a corruption primitive; per guidance UAFs are scored High for integrity.\nA:H - The use-after-free corrupts refcounting and touches freed memory, readily causing an oops/panic; per guidance any UAF/crash is High."
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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/sunrpc/cache.c"
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],
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"versions": [
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{
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"version": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "e9be26735d055c42543a4d047a769cc6d0fb1504",
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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": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "02999e135b013d85c6df738746e8e24699befee4",
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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": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "c7dac3af57e38b2054f990e573256d90bf887958",
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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": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "068c0b50f3f700b94f78850834cd91ae3b34c2c1",
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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": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "acfaf37888e0f0732fb6a50ff093dce6d99994d0",
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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": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "ec305f303bf070b4f6896b7a76009f702956d402",
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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": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "d882e2b7fad3f5e5fac66184a347f408813f654a",
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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": "d48cf356a13073853f19be6ca5ebbecfc2762ebe",
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"lessThan": "2862eee078a4d2d1f584e7f24fa50dddfa5f3471",
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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/sunrpc/cache.c"
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],
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"versions": [
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{
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"version": "4.20",
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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": "4.20",
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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": "6.6.64",
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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": "6.11.11",
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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": "6.12.2",
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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": "4.20",
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"versionEndExcluding": "5.4.287"
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"url": "https://git.kernel.org/stable/c/e9be26735d055c42543a4d047a769cc6d0fb1504"
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},
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{
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"url": "https://git.kernel.org/stable/c/02999e135b013d85c6df738746e8e24699befee4"
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},
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{
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"url": "https://git.kernel.org/stable/c/c7dac3af57e38b2054f990e573256d90bf887958"
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},
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{
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"url": "https://git.kernel.org/stable/c/068c0b50f3f700b94f78850834cd91ae3b34c2c1"
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},
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{
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"url": "https://git.kernel.org/stable/c/acfaf37888e0f0732fb6a50ff093dce6d99994d0"
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},
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{
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"url": "https://git.kernel.org/stable/c/ec305f303bf070b4f6896b7a76009f702956d402"
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},
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{
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"url": "https://git.kernel.org/stable/c/d882e2b7fad3f5e5fac66184a347f408813f654a"
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},
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{
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"url": "https://git.kernel.org/stable/c/2862eee078a4d2d1f584e7f24fa50dddfa5f3471"
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}
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],
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"title": "SUNRPC: make sure cache entry active before cache_show",
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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-2024-53174",
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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": "2025-02-11T15:43:35.253566Z"
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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": "2025-02-11T15:45:26.877Z"
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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": "2025-11-03T20:47:09.594Z"
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}
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}
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]
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}
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} |