{"id":"CVE-2024-44947","state":"PUBLISHED","title":"fuse: Initialize beyond-EOF page contents before setting uptodate","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: Initialize beyond-EOF page contents before setting uptodate\n\nfuse_notify_store(), unlike fuse_do_readpage(), does not enable page\nzeroing (because it can be used to change partial page contents).\n\nSo fuse_notify_store() must be more careful to fully initialize page\ncontents (including parts of the page that are beyond end-of-file)\nbefore marking the page uptodate.\n\nThe current code can leave beyond-EOF page contents uninitialized, which\nmakes these uninitialized page contents visible to userspace via mmap().\n\nThis is an information leak, but only affects systems which do not\nenable init-on-alloc (via CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y or the\ncorresponding kernel command line parameter).","publishedAt":"2024-09-02T17:36:15.633Z","updatedAt":"2026-05-11T20:32:33.169Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"49934861514d36d0995be8e81bb3312a499d8d9a","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"33168db352c7b56ae18aa55c2cae1a1c5905d30e","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"4690e2171f651e2b415e3941ce17f2f7b813aff6","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"8c78303eafbf85a728dd84d1750e89240c677dd9","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"831433527773e665bdb635ab5783d0b95d1246f4","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"ac42e0f0eb66af966015ee33fd355bc6f5d80cd6","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"18a067240817bee8a9360539af5d79a4bf5398a5","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"3c0da3d163eb32f1f91891efaade027fa9b245b9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.36","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.36","versionType":"semver"},{"version":"4.19.321","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.283","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.225","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.166","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.107","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.48","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.7","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev.c"]}],"references":["https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a","https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e","https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6","https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9","https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4","https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6","https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5","https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9","https://project-zero.issues.chromium.org/issues/42451729","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:47.831Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/44xxx/CVE-2024-44947.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-44947","state":"PUBLISHED","datePublished":"2024-09-02T17:36:15.633Z","dateUpdated":"2026-05-11T20:32:33.169Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-08-21T05:34:56.665Z"},"containers":{"cna":{"title":"fuse: Initialize beyond-EOF page contents before setting uptodate","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: Initialize beyond-EOF page contents before setting uptodate\n\nfuse_notify_store(), unlike fuse_do_readpage(), does not enable page\nzeroing (because it can be used to change partial page contents).\n\nSo fuse_notify_store() must be more careful to fully initialize page\ncontents (including parts of the page that are beyond end-of-file)\nbefore marking the page uptodate.\n\nThe current code can leave beyond-EOF page contents uninitialized, which\nmakes these uninitialized page contents visible to userspace via mmap().\n\nThis is an information leak, but only affects systems which do not\nenable init-on-alloc (via CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y or the\ncorresponding kernel command line parameter)."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"49934861514d36d0995be8e81bb3312a499d8d9a","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"33168db352c7b56ae18aa55c2cae1a1c5905d30e","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"4690e2171f651e2b415e3941ce17f2f7b813aff6","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"8c78303eafbf85a728dd84d1750e89240c677dd9","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"831433527773e665bdb635ab5783d0b95d1246f4","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"ac42e0f0eb66af966015ee33fd355bc6f5d80cd6","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"18a067240817bee8a9360539af5d79a4bf5398a5","versionType":"git"},{"version":"a1d75f258230b75d46aecdf28b2e732413028863","status":"affected","lessThan":"3c0da3d163eb32f1f91891efaade027fa9b245b9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.36","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.36","versionType":"semver"},{"version":"4.19.321","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.283","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.225","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.166","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.107","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.48","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.7","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/49934861514d36d0995be8e81bb3312a499d8d9a"},{"url":"https://git.kernel.org/stable/c/33168db352c7b56ae18aa55c2cae1a1c5905d30e"},{"url":"https://git.kernel.org/stable/c/4690e2171f651e2b415e3941ce17f2f7b813aff6"},{"url":"https://git.kernel.org/stable/c/8c78303eafbf85a728dd84d1750e89240c677dd9"},{"url":"https://git.kernel.org/stable/c/831433527773e665bdb635ab5783d0b95d1246f4"},{"url":"https://git.kernel.org/stable/c/ac42e0f0eb66af966015ee33fd355bc6f5d80cd6"},{"url":"https://git.kernel.org/stable/c/18a067240817bee8a9360539af5d79a4bf5398a5"},{"url":"https://git.kernel.org/stable/c/3c0da3d163eb32f1f91891efaade027fa9b245b9"},{"url":"https://project-zero.issues.chromium.org/issues/42451729"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:32:33.169Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"4.19.321"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"5.4.283"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"5.10.225"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"5.15.166"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.1.107"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.6.48"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.10.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.36","versionEndExcluding":"6.11"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA 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