{"id":"CVE-2026-72439","state":"PUBLISHED","title":"md/raid10: fix writes_pending leak on write request failures","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix writes_pending leak on write request failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before dispatching write requests. Several failure\npaths in raid10_write_request() complete the bio and return without\nreaching the normal write completion path, causing the corresponding\nmd_write_end() to be skipped.\n\nMake raid10_write_request() return a status indicating whether the write\nrequest was successfully queued. This allows raid10_make_request() to\nrelease the writes_pending reference with md_write_end() when a write\nrequest fails.","publishedAt":"2026-08-15T05:56:52.023Z","updatedAt":"2026-10-30T12:29:24.199Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"55dc3d1d6a9983867273d3531e3ddd743428db8d","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"f076460c5205c9687059e5a3afeed37d2f2ceb6b","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"b6667d925c274910423385042edf18f6788dbceb","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"c642583adc136d4c70ce3c65c3f43e847d26c776","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"f94031c94eaebe14a7c9e91720064de0c5a54a6c","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d","versionType":"git"},{"version":"39db562b3fedb93978a7e42dd216b306740959f8","status":"affected","versionType":"git"},{"version":"5.15.111","status":"affected","lessThan":"5.16","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid10.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid10.c"]}],"references":["https://git.kernel.org/stable/c/55dc3d1d6a9983867273d3531e3ddd743428db8d","https://git.kernel.org/stable/c/f076460c5205c9687059e5a3afeed37d2f2ceb6b","https://git.kernel.org/stable/c/b6667d925c274910423385042edf18f6788dbceb","https://git.kernel.org/stable/c/c642583adc136d4c70ce3c65c3f43e847d26c776","https://git.kernel.org/stable/c/f94031c94eaebe14a7c9e91720064de0c5a54a6c","https://git.kernel.org/stable/c/e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d"],"weaknesses":[],"ingestedAt":"2026-10-30T12:48:04.825Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72439.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72439","state":"PUBLISHED","datePublished":"2026-08-15T05:56:52.023Z","dateUpdated":"2026-10-30T12:29:24.199Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.930Z"},"containers":{"cna":{"title":"md/raid10: fix writes_pending leak on write request failures","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix writes_pending leak on write request failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before dispatching write requests. Several failure\npaths in raid10_write_request() complete the bio and return without\nreaching the normal write completion path, causing the corresponding\nmd_write_end() to be skipped.\n\nMake raid10_write_request() return a status indicating whether the write\nrequest was successfully queued. This allows raid10_make_request() to\nrelease the writes_pending reference with md_write_end() when a write\nrequest fails."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"55dc3d1d6a9983867273d3531e3ddd743428db8d","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"f076460c5205c9687059e5a3afeed37d2f2ceb6b","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"b6667d925c274910423385042edf18f6788dbceb","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"c642583adc136d4c70ce3c65c3f43e847d26c776","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"f94031c94eaebe14a7c9e91720064de0c5a54a6c","versionType":"git"},{"version":"c9aa889b035fca4598ae985a0f0c76ebbb547ad2","status":"affected","lessThan":"e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d","versionType":"git"},{"version":"39db562b3fedb93978a7e42dd216b306740959f8","status":"affected","versionType":"git"},{"version":"5.15.111","status":"affected","lessThan":"5.16","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid10.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid10.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/55dc3d1d6a9983867273d3531e3ddd743428db8d"},{"url":"https://git.kernel.org/stable/c/f076460c5205c9687059e5a3afeed37d2f2ceb6b"},{"url":"https://git.kernel.org/stable/c/b6667d925c274910423385042edf18f6788dbceb"},{"url":"https://git.kernel.org/stable/c/c642583adc136d4c70ce3c65c3f43e847d26c776"},{"url":"https://git.kernel.org/stable/c/f94031c94eaebe14a7c9e91720064de0c5a54a6c"},{"url":"https://git.kernel.org/stable/c/e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:29:24.199Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.111"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}