{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-26840",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-26840"
  ],
  "published": "2024-04-17T10:10:25Z",
  "summary": "cachefiles: fix memory leak in cachefiles_add_cache()",
  "details": "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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-26840"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3"
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      "url": "https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a"
    },
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      "type": "FIX",
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    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}