{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-43314", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43314", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-05-08T13:11:31.068Z", "updatedAt": "2026-05-11T22:22:09.779Z", "importedAt": "2026-10-24T01:58:14.884Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "dm: remove fake timeout to avoid leak request", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm: remove fake timeout to avoid leak request\n\nSince commit 15f73f5b3e59 (\"blk-mq: move failure injection out of\nblk_mq_complete_request\"), drivers are responsible for calling\nblk_should_fake_timeout() at appropriate code paths and opportunities.\n\nHowever, the dm driver does not implement its own timeout handler and\nrelies on the timeout handling of its slave devices.\n\nIf an io-timeout-fail error is injected to a dm device, the request\nwill be leaked and never completed, causing tasks to hang indefinitely.\n\nReproduce:\n1. prepare dm which has iscsi slave device\n2. inject io-timeout-fail to dm\n echo 1 >/sys/class/block/dm-0/io-timeout-fail\n echo 100 >/sys/kernel/debug/fail_io_timeout/probability\n echo 10 >/sys/kernel/debug/fail_io_timeout/times\n3. read/write dm\n4. iscsiadm -m node -u\n\nResult: hang task like below\n[ 862.243768] INFO: task kworker/u514:2:151 blocked for more than 122 seconds.\n[ 862.244133] Tainted: G E 6.19.0-rc1+ #51\n[ 862.244337] \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n[ 862.244718] task:kworker/u514:2 state:D stack:0 pid:151 tgid:151 ppid:2 task_flags:0x4288060 flags:0x00080000\n[ 862.245024] Workqueue: iscsi_ctrl_3:1 __iscsi_unbind_session [scsi_transport_iscsi]\n[ 862.245264] Call Trace:\n[ 862.245587] \n[ 862.245814] __schedule+0x810/0x15c0\n[ 862.246557] schedule+0x69/0x180\n[ 862.246760] blk_mq_freeze_queue_wait+0xde/0x120\n[ 862.247688] elevator_change+0x16d/0x460\n[ 862.247893] elevator_set_none+0x87/0xf0\n[ 862.248798] blk_unregister_queue+0x12e/0x2a0\n[ 862.248995] __del_gendisk+0x231/0x7e0\n[ 862.250143] del_gendisk+0x12f/0x1d0\n[ 862.250339] sd_remove+0x85/0x130 [sd_mod]\n[ 862.250650] device_release_driver_internal+0x36d/0x530\n[ 862.250849] bus_remove_device+0x1dd/0x3f0\n[ 862.251042] device_del+0x38a/0x930\n[ 862.252095] __scsi_remove_device+0x293/0x360\n[ 862.252291] scsi_remove_target+0x486/0x760\n[ 862.252654] __iscsi_unbind_session+0x18a/0x3e0 [scsi_transport_iscsi]\n[ 862.252886] process_one_work+0x633/0xe50\n[ 862.253101] worker_thread+0x6df/0xf10\n[ 862.253647] kthread+0x36d/0x720\n[ 862.254533] ret_from_fork+0x2a6/0x470\n[ 862.255852] ret_from_fork_asm+0x1a/0x30\n[ 862.256037] \n\nRemove the blk_should_fake_timeout() check from dm, as dm has no\nnative timeout handling and should not attempt to fake timeouts.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "ece6720de9403260088209b0b92d45e0b49ff856" }, { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "8200fca818c1e2f65bc6cb16d934ff6049302197" }, { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "b307b6307f6459841312432bd4bc9519cbac97f5" }, { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "4f9e7ca933a9fbf9912a384b061a00c77332cbf0" }, { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "cf2d06c9fd4b6521ea5b7f73c99c64c2c6f5e224" }, { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3" }, { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "c8a23d4c995ef4227bd4de64cd3910637ee6162e" }, { "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "status": "affected", "versionType": "git", "lessThan": "f3a9c95a15d2f4466acad5c68faeff79ca5e9f47" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.31", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.31" }, { "version": "5.10.252", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.202", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.165", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.128", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.75", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.16", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.19.*" }, { "version": "7.0", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }