{"api_version":"1","generated_at":"2026-08-24T20:04:59+00:00","cve":"CVE-2026-72163","urls":{"html":"https://cve.report/CVE-2026-72163","api":"https://cve.report/api/cve/CVE-2026-72163.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72163","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72163"},"summary":{"title":"ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits\n\n[BUG]\nA direct write over unwritten extents can panic the kernel in\nocfs2_assure_trans_credits() when the journal aborts during DIO\ncompletion. The crash is a general protection fault from a NULL pointer\ndereference.\n\n[CAUSE]\nocfs2_dio_end_io_write() loops over a direct write's unwritten extents,\nmarking each written under a single journal handle. If the journal\naborts (for example after an I/O error) while the extent tree is being\nupdated, the handle is left aborted with its transaction pointer\ncleared. The extent merge treats that failure as not critical and\nreports success, so the loop keeps using the handle.\nocfs2_assure_trans_credits() reads the handle's remaining credits\nwithout first checking whether the handle is aborted, and that read\ndereferences the cleared transaction pointer.\n\n[FIX]\nA journal abort is recorded in the handle itself, so callers are\nexpected to test the handle rather than rely on a returned error.\nMake ocfs2_assure_trans_credits() do that, as the other ocfs2 journal\nhelpers already do, and return -EROFS when the handle is aborted.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:21:34","updated_at":"2026-08-17 06:18:16"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7146d191dae3a8efdb957993fb61a55713186266","name":"https://git.kernel.org/stable/c/7146d191dae3a8efdb957993fb61a55713186266","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2d80e9c56718435a9c9f5f24dbc954989aead579","name":"https://git.kernel.org/stable/c/2d80e9c56718435a9c9f5f24dbc954989aead579","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bd73971fad89d5ee4ea0ba9b92d2ea08733c4a64","name":"https://git.kernel.org/stable/c/bd73971fad89d5ee4ea0ba9b92d2ea08733c4a64","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/942b818b396c24c452681803ff291552317d2ef1","name":"https://git.kernel.org/stable/c/942b818b396c24c452681803ff291552317d2ef1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f14aaaa130356ee4adb44de947c098637c70df8f","name":"https://git.kernel.org/stable/c/f14aaaa130356ee4adb44de947c098637c70df8f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6ad7532a23bc94076efe9f1486dd7f7493c090ff","name":"https://git.kernel.org/stable/c/6ad7532a23bc94076efe9f1486dd7f7493c090ff","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f9ab30c96b0f00c20c6dac93681bdae3a033d229","name":"https://git.kernel.org/stable/c/f9ab30c96b0f00c20c6dac93681bdae3a033d229","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/253ed993e0b36997ec7b04c1ff76103b38241de2","name":"https://git.kernel.org/stable/c/253ed993e0b36997ec7b04c1ff76103b38241de2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72163","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72163","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a68b896aa56e435506453ec8835bc991ec3ae687 2d80e9c56718435a9c9f5f24dbc954989aead579 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 320273b5649bbcee87f9e65343077189699d2a7a 942b818b396c24c452681803ff291552317d2ef1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9ea2d1c6789722d58ec191f14f9a02518d55b6b4 7146d191dae3a8efdb957993fb61a55713186266 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c05ffb693bfb42a48ef3ee88a55b57392984e111 f14aaaa130356ee4adb44de947c098637c70df8f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72163","cve":"CVE-2026-72163","epss":"0.002100000","percentile":"0.115380000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ocfs2/journal.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2d80e9c56718435a9c9f5f24dbc954989aead579","status":"affected","version":"a68b896aa56e435506453ec8835bc991ec3ae687","versionType":"git"},{"lessThan":"942b818b396c24c452681803ff291552317d2ef1","status":"affected","version":"320273b5649bbcee87f9e65343077189699d2a7a","versionType":"git"},{"lessThan":"7146d191dae3a8efdb957993fb61a55713186266","status":"affected","version":"9ea2d1c6789722d58ec191f14f9a02518d55b6b4","versionType":"git"},{"lessThan":"f14aaaa130356ee4adb44de947c098637c70df8f","status":"affected","version":"c05ffb693bfb42a48ef3ee88a55b57392984e111","versionType":"git"},{"lessThan":"6ad7532a23bc94076efe9f1486dd7f7493c090ff","status":"affected","version":"be346c1a6eeb49d8fda827d2a9522124c2f72f36","versionType":"git"},{"lessThan":"bd73971fad89d5ee4ea0ba9b92d2ea08733c4a64","status":"affected","version":"be346c1a6eeb49d8fda827d2a9522124c2f72f36","versionType":"git"},{"lessThan":"253ed993e0b36997ec7b04c1ff76103b38241de2","status":"affected","version":"be346c1a6eeb49d8fda827d2a9522124c2f72f36","versionType":"git"},{"lessThan":"f9ab30c96b0f00c20c6dac93681bdae3a033d229","status":"affected","version":"be346c1a6eeb49d8fda827d2a9522124c2f72f36","versionType":"git"},{"status":"affected","version":"331d1079d58206ff7dc5518185f800b412f89bc6","versionType":"git"},{"lessThan":"5.10.261","status":"affected","version":"5.10.221","versionType":"semver"},{"lessThan":"5.15.212","status":"affected","version":"5.15.162","versionType":"semver"},{"lessThan":"6.1.178","status":"affected","version":"6.1.97","versionType":"semver"},{"lessThan":"6.6.145","status":"affected","version":"6.6.37","versionType":"semver"},{"lessThan":"6.10","status":"affected","version":"6.9.8","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ocfs2/journal.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"5.10.221","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.15.162","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"6.1.97","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits\n\n[BUG]\nA direct write over unwritten extents can panic the kernel in\nocfs2_assure_trans_credits() when the journal aborts during DIO\ncompletion. The crash is a general protection fault from a NULL pointer\ndereference.\n\n[CAUSE]\nocfs2_dio_end_io_write() loops over a direct write's unwritten extents,\nmarking each written under a single journal handle. If the journal\naborts (for example after an I/O error) while the extent tree is being\nupdated, the handle is left aborted with its transaction pointer\ncleared. The extent merge treats that failure as not critical and\nreports success, so the loop keeps using the handle.\nocfs2_assure_trans_credits() reads the handle's remaining credits\nwithout first checking whether the handle is aborted, and that read\ndereferences the cleared transaction pointer.\n\n[FIX]\nA journal abort is recorded in the handle itself, so callers are\nexpected to test the handle rather than rely on a returned error.\nMake ocfs2_assure_trans_credits() do that, as the other ocfs2 journal\nhelpers already do, and return -EROFS when the handle is aborted."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:09:24.274Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2d80e9c56718435a9c9f5f24dbc954989aead579"},{"url":"https://git.kernel.org/stable/c/942b818b396c24c452681803ff291552317d2ef1"},{"url":"https://git.kernel.org/stable/c/7146d191dae3a8efdb957993fb61a55713186266"},{"url":"https://git.kernel.org/stable/c/f14aaaa130356ee4adb44de947c098637c70df8f"},{"url":"https://git.kernel.org/stable/c/6ad7532a23bc94076efe9f1486dd7f7493c090ff"},{"url":"https://git.kernel.org/stable/c/bd73971fad89d5ee4ea0ba9b92d2ea08733c4a64"},{"url":"https://git.kernel.org/stable/c/253ed993e0b36997ec7b04c1ff76103b38241de2"},{"url":"https://git.kernel.org/stable/c/f9ab30c96b0f00c20c6dac93681bdae3a033d229"}],"title":"ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72163","datePublished":"2026-08-15T05:53:31.157Z","dateReserved":"2026-08-09T03:40:39.909Z","dateUpdated":"2026-08-17T05:09:24.274Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:21:34","lastModifiedDate":"2026-08-17 06:18:16","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72163","Ordinal":"1","Title":"ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credit","CVE":"CVE-2026-72163","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72163","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits\n\n[BUG]\nA direct write over unwritten extents can panic the kernel in\nocfs2_assure_trans_credits() when the journal aborts during DIO\ncompletion. The crash is a general protection fault from a NULL pointer\ndereference.\n\n[CAUSE]\nocfs2_dio_end_io_write() loops over a direct write's unwritten extents,\nmarking each written under a single journal handle. If the journal\naborts (for example after an I/O error) while the extent tree is being\nupdated, the handle is left aborted with its transaction pointer\ncleared. The extent merge treats that failure as not critical and\nreports success, so the loop keeps using the handle.\nocfs2_assure_trans_credits() reads the handle's remaining credits\nwithout first checking whether the handle is aborted, and that read\ndereferences the cleared transaction pointer.\n\n[FIX]\nA journal abort is recorded in the handle itself, so callers are\nexpected to test the handle rather than rely on a returned error.\nMake ocfs2_assure_trans_credits() do that, as the other ocfs2 journal\nhelpers already do, and return -EROFS when the handle is aborted.","Type":"Description","Title":"ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credit"}]}}}