{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-22036","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-12-29T08:45:45.809Z","datePublished":"2025-04-16T14:11:54.916Z","dateUpdated":"2026-05-11T21:11:23.972Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:11:23.972Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix random stack corruption after get_block\n\nWhen get_block is called with a buffer_head allocated on the stack, such\nas do_mpage_readpage, stack corruption due to buffer_head UAF may occur in\nthe following race condition situation.\n\n     <CPU 0>                      <CPU 1>\nmpage_read_folio\n  <<bh on stack>>\n  do_mpage_readpage\n    exfat_get_block\n      bh_read\n        __bh_read\n\t  get_bh(bh)\n          submit_bh\n          wait_on_buffer\n                              ...\n                              end_buffer_read_sync\n                                __end_buffer_read_notouch\n                                   unlock_buffer\n          <<keep going>>\n        ...\n      ...\n    ...\n  ...\n<<bh is not valid out of mpage_read_folio>>\n   .\n   .\nanother_function\n  <<variable A on stack>>\n                                   put_bh(bh)\n                                     atomic_dec(bh->b_count)\n  * stack corruption here *\n\nThis patch returns -EAGAIN if a folio does not have buffers when bh_read\nneeds to be called. By doing this, the caller can fallback to functions\nlike block_read_full_folio(), create a buffer_head in the folio, and then\ncall get_block again.\n\nLet's do not call bh_read() with on-stack buffer_head."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/exfat/inode.c"],"versions":[{"version":"11a347fb6cef62ce47e84b97c45f2b2497c7593b","lessThan":"49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2","status":"affected","versionType":"git"},{"version":"11a347fb6cef62ce47e84b97c45f2b2497c7593b","lessThan":"f7447286363dc1e410bf30b87d75168f3519f9cc","status":"affected","versionType":"git"},{"version":"11a347fb6cef62ce47e84b97c45f2b2497c7593b","lessThan":"f807a6bf2005740fa26b4f59c4a003dc966b9afd","status":"affected","versionType":"git"},{"version":"11a347fb6cef62ce47e84b97c45f2b2497c7593b","lessThan":"1bb7ff4204b6d4927e982cd256286c09ed4fd8ca","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/exfat/inode.c"],"versions":[{"version":"6.8","status":"affected"},{"version":"0","lessThan":"6.8","status":"unaffected","versionType":"semver"},{"version":"6.12.23","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.13.11","lessThanOrEqual":"6.13.*","status":"unaffected","versionType":"semver"},{"version":"6.14.2","lessThanOrEqual":"6.14.*","status":"unaffected","versionType":"semver"},{"version":"6.15","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":"6.8","versionEndExcluding":"6.12.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.13.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.14.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.15"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2"},{"url":"https://git.kernel.org/stable/c/f7447286363dc1e410bf30b87d75168f3519f9cc"},{"url":"https://git.kernel.org/stable/c/f807a6bf2005740fa26b4f59c4a003dc966b9afd"},{"url":"https://git.kernel.org/stable/c/1bb7ff4204b6d4927e982cd256286c09ed4fd8ca"}],"title":"exfat: fix random stack corruption after get_block","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-416","lang":"en","description":"CWE-416 Use After Free"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T17:04:29.794256Z","id":"CVE-2025-22036","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T17:04:32.804Z"}}]}}