{
   "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: flush all requests after setting CACHEFILES_DEAD\n\nIn ondemand mode, when the daemon is processing an open request, if the\nkernel flags the cache as CACHEFILES_DEAD, the cachefiles_daemon_write()\nwill always return -EIO, so the daemon can't pass the copen to the kernel.\nThen the kernel process that is waiting for the copen triggers a hung_task.\n\nSince the DEAD state is irreversible, it can only be exited by closing\n/dev/cachefiles. Therefore, after calling cachefiles_io_error() to mark\nthe cache as CACHEFILES_DEAD, if in ondemand mode, flush all requests to\navoid the above hungtask. We may still be able to read some of the cached\ndata before closing the fd of /dev/cachefiles.\n\nNote that this relies on the patch that adds reference counting to the req,\notherwise it may UAF."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/cachefiles/daemon.c",
                  "fs/cachefiles/internal.h"
               ],
               "versions": [
                  {
                     "version": "c8383054506c",
                     "lessThan": "320ba9cbca78",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "c8383054506c",
                     "lessThan": "3bf0b8030296",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "c8383054506c",
                     "lessThan": "e73fac950848",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "c8383054506c",
                     "lessThan": "85e833cd7243",
                     "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/daemon.c",
                  "fs/cachefiles/internal.h"
               ],
               "versions": [
                  {
                     "version": "5.19",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.19",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.95",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.35",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.6",
                     "lessThanOrEqual": "6.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/320ba9cbca78be79c912143bbba1d1b35ca55cf0"
            },
            {
               "url": "https://git.kernel.org/stable/c/3bf0b8030296e9ee60d3d4c15849ad9ac0b47081"
            },
            {
               "url": "https://git.kernel.org/stable/c/e73fac95084839c5178d97e81c6a2051251bdc00"
            },
            {
               "url": "https://git.kernel.org/stable/c/85e833cd7243bda7285492b0653c3abb1e2e757b"
            }
         ],
         "title": "cachefiles: flush all requests after setting CACHEFILES_DEAD",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-40935",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}