{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "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."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "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"
               ],
               "versions": [
                  {
                     "version": "9ae326a69004",
                     "lessThan": "cb5466783793",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ae326a69004",
                     "lessThan": "037d5a949b04",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ae326a69004",
                     "lessThan": "43eccc582373",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ae326a69004",
                     "lessThan": "94965be37add",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ae326a69004",
                     "lessThan": "8b218e2f0a27",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ae326a69004",
                     "lessThan": "38e921616320",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ae326a69004",
                     "lessThan": "9cac69912052",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9ae326a69004",
                     "lessThan": "e21a2f17566c",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/cachefiles/cache.c",
                  "fs/cachefiles/daemon.c"
               ],
               "versions": [
                  {
                     "version": "2.6.30",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "2.6.30",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.309",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.271",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.212",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.151",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.80",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.19",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.7",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083"
            },
            {
               "url": "https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285"
            },
            {
               "url": "https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8"
            },
            {
               "url": "https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579"
            },
            {
               "url": "https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58"
            },
            {
               "url": "https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3"
            },
            {
               "url": "https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec590e25a"
            },
            {
               "url": "https://git.kernel.org/stable/c/e21a2f17566cbd64926fb8f16323972f7a064444"
            }
         ],
         "title": "cachefiles: fix memory leak in cachefiles_add_cache()",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26840",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}