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vuln-cve/data/2024/26xxx/CVE-2024-26840.json
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{
"dataType": "CVE_RECORD",
"cveMetadata": {
"cveId": "CVE-2024-26840",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-02-19T14:20:24.182Z",
"datePublished": "2024-04-17T10:10:06.180Z",
"dateUpdated": "2026-05-11T20:05:09.433Z"
},
"containers": {
"cna": {
"providerMetadata": {
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"shortName": "Linux",
"dateUpdated": "2026-05-11T20:05:09.433Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: fix memory leak in cachefiles_add_cache()\n\nThe following memory leak was reported after unbinding /dev/cachefiles:\n\n==================================================================\nunreferenced object 0xffff9b674176e3c0 (size 192):\n comm \"cachefilesd2\", pid 680, jiffies 4294881224\n hex dump (first 32 bytes):\n 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace (crc ea38a44b):\n [<ffffffff8eb8a1a5>] kmem_cache_alloc+0x2d5/0x370\n [<ffffffff8e917f86>] prepare_creds+0x26/0x2e0\n [<ffffffffc002eeef>] cachefiles_determine_cache_security+0x1f/0x120\n [<ffffffffc00243ec>] cachefiles_add_cache+0x13c/0x3a0\n [<ffffffffc0025216>] cachefiles_daemon_write+0x146/0x1c0\n [<ffffffff8ebc4a3b>] vfs_write+0xcb/0x520\n [<ffffffff8ebc5069>] ksys_write+0x69/0xf0\n [<ffffffff8f6d4662>] do_syscall_64+0x72/0x140\n [<ffffffff8f8000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0x76\n==================================================================\n\nPut the reference count of cache_cred in cachefiles_daemon_unbind() to\nfix the problem. And also put cache_cred in cachefiles_add_cache() error\nbranch to avoid memory leaks."
}
],
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"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/cachefiles/cache.c",
"fs/cachefiles/daemon.c"
],
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
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"fs/cachefiles/daemon.c"
],
"versions": [
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"status": "affected"
},
{
"version": "0",
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"status": "unaffected",
"versionType": "semver"
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{
"version": "4.19.309",
"lessThanOrEqual": "4.19.*",
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{
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{
"version": "6.6.19",
"lessThanOrEqual": "6.6.*",
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{
"version": "6.8",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
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}
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"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"url": "https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285"
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"url": "https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444"
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"title": "cachefiles: fix memory leak in cachefiles_add_cache()",
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"version": "2.0.3",
"timestamp": "2024-05-28T19:58:24.475717Z"
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