{"id":"CVE-2026-23285","state":"PUBLISHED","title":"drbd: fix null-pointer dereference on local read error","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrbd: fix null-pointer dereference on local read error\n\nIn drbd_request_endio(), READ_COMPLETED_WITH_ERROR is passed to\n__req_mod() with a NULL peer_device:\n\n  __req_mod(req, what, NULL, &m);\n\nThe READ_COMPLETED_WITH_ERROR handler then unconditionally passes this\nNULL peer_device to drbd_set_out_of_sync(), which dereferences it,\ncausing a null-pointer dereference.\n\nFix this by obtaining the peer_device via first_peer_device(device),\nmatching how drbd_req_destroy() handles the same situation.","publishedAt":"2026-03-25T10:26:44.698Z","updatedAt":"2026-05-11T22:03:54.818Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"6f1d1614f841d91a4169db65812ffd1271735b42","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"1e906c08594c8f9a6a524f38ede2c4e051196106","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"4e8935053ba389ae8d6685c10854d8021931bd89","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"91df51d2df0ca4fd3281f73626341563d64a98a5","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"0d195d3b205ca90db30d70d09d7bb6909aac178f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/drbd/drbd_req.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.77","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/drbd/drbd_req.c"]}],"references":["https://git.kernel.org/stable/c/6f1d1614f841d91a4169db65812ffd1271735b42","https://git.kernel.org/stable/c/1e906c08594c8f9a6a524f38ede2c4e051196106","https://git.kernel.org/stable/c/4e8935053ba389ae8d6685c10854d8021931bd89","https://git.kernel.org/stable/c/91df51d2df0ca4fd3281f73626341563d64a98a5","https://git.kernel.org/stable/c/0d195d3b205ca90db30d70d09d7bb6909aac178f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23285.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23285","state":"PUBLISHED","datePublished":"2026-03-25T10:26:44.698Z","dateUpdated":"2026-05-11T22:03:54.818Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:45.992Z"},"containers":{"cna":{"title":"drbd: fix null-pointer dereference on local read error","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrbd: fix null-pointer dereference on local read error\n\nIn drbd_request_endio(), READ_COMPLETED_WITH_ERROR is passed to\n__req_mod() with a NULL peer_device:\n\n  __req_mod(req, what, NULL, &m);\n\nThe READ_COMPLETED_WITH_ERROR handler then unconditionally passes this\nNULL peer_device to drbd_set_out_of_sync(), which dereferences it,\ncausing a null-pointer dereference.\n\nFix this by obtaining the peer_device via first_peer_device(device),\nmatching how drbd_req_destroy() handles the same situation."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"6f1d1614f841d91a4169db65812ffd1271735b42","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"1e906c08594c8f9a6a524f38ede2c4e051196106","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"4e8935053ba389ae8d6685c10854d8021931bd89","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"91df51d2df0ca4fd3281f73626341563d64a98a5","versionType":"git"},{"version":"0d11f3cf279c5ad20a41f29242f170ba3c02f2da","status":"affected","lessThan":"0d195d3b205ca90db30d70d09d7bb6909aac178f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/drbd/drbd_req.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.77","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/drbd/drbd_req.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6f1d1614f841d91a4169db65812ffd1271735b42"},{"url":"https://git.kernel.org/stable/c/1e906c08594c8f9a6a524f38ede2c4e051196106"},{"url":"https://git.kernel.org/stable/c/4e8935053ba389ae8d6685c10854d8021931bd89"},{"url":"https://git.kernel.org/stable/c/91df51d2df0ca4fd3281f73626341563d64a98a5"},{"url":"https://git.kernel.org/stable/c/0d195d3b205ca90db30d70d09d7bb6909aac178f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:03:54.818Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.19.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}