{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-31580", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.119Z", "datePublished": "2026-04-24T14:42:10.874Z", "dateUpdated": "2026-10-15T01:17:05.087Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:42:06.405Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: fix cached_dev.sb_bio use-after-free and crash\n\nIn our production environment, we have received multiple crash reports\nregarding libceph, which have caught our attention:\n\n```\n[6888366.280350] Call Trace:\n[6888366.280452] blk_update_request+0x14e/0x370\n[6888366.280561] blk_mq_end_request+0x1a/0x130\n[6888366.280671] rbd_img_handle_request+0x1a0/0x1b0 [rbd]\n[6888366.280792] rbd_obj_handle_request+0x32/0x40 [rbd]\n[6888366.280903] __complete_request+0x22/0x70 [libceph]\n[6888366.281032] osd_dispatch+0x15e/0xb40 [libceph]\n[6888366.281164] ? inet_recvmsg+0x5b/0xd0\n[6888366.281272] ? ceph_tcp_recvmsg+0x6f/0xa0 [libceph]\n[6888366.281405] ceph_con_process_message+0x79/0x140 [libceph]\n[6888366.281534] ceph_con_v1_try_read+0x5d7/0xf30 [libceph]\n[6888366.281661] ceph_con_workfn+0x329/0x680 [libceph]\n```\n\nAfter analyzing the coredump file, we found that the address of\ndc->sb_bio has been freed. We know that cached_dev is only freed when it\nis stopped.\n\nSince sb_bio is a part of struct cached_dev, rather than an alloc every\ntime. If the device is stopped while writing to the superblock, the\nreleased address will be accessed at endio.\n\nThis patch hopes to wait for sb_write to complete in cached_dev_free.\n\nIt should be noted that we analyzed the cause of the problem, then tell\nall details to the QWEN and adopted the modifications it made." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/md/bcache/super.c" ], "versions": [ { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "81f44ed8c3f54abb7561ece774ea4cca5070b2f2", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "f50e7c325ab1207fe941555bcff659f6d7050572", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "9467d360be70e6ee55b0c1cd2a1f1424f57b5b85", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "47fa09fe7f3e09df28a51cb2cbd8f5d2f7f6edc1", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "add4982510f3b7c318a2dd7438bdc9c63171e753", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "2d6965581e164fa2ba3f7652ddae5535f6336576", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "4f71c8ba2dc009042493021d94a9718fbe2ebf27", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "383f7fec0de8cee1cf7ae1f9d9f14044a61f10f9", "status": "affected", "versionType": "git" }, { "version": "cafe563591446cf80bfbc2fe3bc72a2e36cf1060", "lessThan": "fec114a98b8735ee89c75216c45a78e28be0f128", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/md/bcache/super.c" ], "versions": [ { "version": "3.10", "status": "affected" }, { "version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.1", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "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": "3.10", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.6.136" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.12.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.18.24" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.19.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.0.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/81f44ed8c3f54abb7561ece774ea4cca5070b2f2" }, { "url": "https://git.kernel.org/stable/c/f50e7c325ab1207fe941555bcff659f6d7050572" }, { "url": "https://git.kernel.org/stable/c/9467d360be70e6ee55b0c1cd2a1f1424f57b5b85" }, { "url": "https://git.kernel.org/stable/c/47fa09fe7f3e09df28a51cb2cbd8f5d2f7f6edc1" }, { "url": "https://git.kernel.org/stable/c/add4982510f3b7c318a2dd7438bdc9c63171e753" }, { "url": "https://git.kernel.org/stable/c/2d6965581e164fa2ba3f7652ddae5535f6336576" }, { "url": "https://git.kernel.org/stable/c/4f71c8ba2dc009042493021d94a9718fbe2ebf27" }, { "url": "https://git.kernel.org/stable/c/383f7fec0de8cee1cf7ae1f9d9f14044a61f10f9" }, { "url": "https://git.kernel.org/stable/c/fec114a98b8735ee89c75216c45a78e28be0f128" } ], "title": "bcache: fix cached_dev.sb_bio use-after-free and crash", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:17:05.087Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html" } ] } ] } }