{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-40935","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-12T12:17:45.584Z","datePublished":"2024-07-12T12:25:12.483Z","dateUpdated":"2025-11-03T21:58:02.518Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T09:18:17.250Z"},"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":"c8383054506c77b814489c09877b5db83fd4abf2","lessThan":"320ba9cbca78be79c912143bbba1d1b35ca55cf0","status":"affected","versionType":"git"},{"version":"c8383054506c77b814489c09877b5db83fd4abf2","lessThan":"3bf0b8030296e9ee60d3d4c15849ad9ac0b47081","status":"affected","versionType":"git"},{"version":"c8383054506c77b814489c09877b5db83fd4abf2","lessThan":"e73fac95084839c5178d97e81c6a2051251bdc00","status":"affected","versionType":"git"},{"version":"c8383054506c77b814489c09877b5db83fd4abf2","lessThan":"85e833cd7243bda7285492b0653c3abb1e2e757b","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":"semver"},{"version":"6.1.95","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.35","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.9.6","lessThanOrEqual":"6.9.*","status":"unaffected","versionType":"semver"},{"version":"6.10","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.9.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.10"}]}]}],"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-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/320ba9cbca78be79c912143bbba1d1b35ca55cf0","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/3bf0b8030296e9ee60d3d4c15849ad9ac0b47081","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/e73fac95084839c5178d97e81c6a2051251bdc00","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/85e833cd7243bda7285492b0653c3abb1e2e757b","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T21:58:02.518Z"}},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-40935","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T17:04:46.320967Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:33:02.419Z"}}]}}