CVE-2026-43314

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43314", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.001Z", "datePublished": "2026-05-08T13:11:31.068Z", "dateUpdated": "2026-11-06T15:42:48.183Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:22:09.779Z"}, "descriptions": [{"lang": "en", "value": "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] <TASK>\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] </TASK>\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": 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"e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3", "status": "affected", "versionType": "git"}, {"version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "c8a23d4c995ef4227bd4de64cd3910637ee6162e", "status": "affected", "versionType": "git"}, {"version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "f3a9c95a15d2f4466acad5c68faeff79ca5e9f47", "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/dm-rq.c"], "versions": [{"version": "2.6.31", "status": "affected"}, {"version": "0", "lessThan": "2.6.31", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.252", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.202", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, 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"5.15.202"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.18.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ece6720de9403260088209b0b92d45e0b49ff856"}, {"url": "https://git.kernel.org/stable/c/8200fca818c1e2f65bc6cb16d934ff6049302197"}, {"url": "https://git.kernel.org/stable/c/b307b6307f6459841312432bd4bc9519cbac97f5"}, {"url": "https://git.kernel.org/stable/c/4f9e7ca933a9fbf9912a384b061a00c77332cbf0"}, {"url": "https://git.kernel.org/stable/c/cf2d06c9fd4b6521ea5b7f73c99c64c2c6f5e224"}, {"url": "https://git.kernel.org/stable/c/6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3"}, {"url": "https://git.kernel.org/stable/c/c8a23d4c995ef4227bd4de64cd3910637ee6162e"}, {"url": "https://git.kernel.org/stable/c/f3a9c95a15d2f4466acad5c68faeff79ca5e9f47"}], "title": "dm: remove fake timeout to avoid leak request", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-43314", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:35:18.482577Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T15:42:48.183Z"}}]}}

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"versionType": "git"}, {"status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "b307b6307f6459841312432bd4bc9519cbac97f5", "versionType": "git"}, {"status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "4f9e7ca933a9fbf9912a384b061a00c77332cbf0", "versionType": "git"}, {"status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "cf2d06c9fd4b6521ea5b7f73c99c64c2c6f5e224", "versionType": "git"}, {"status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3", "versionType": "git"}, {"status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "c8a23d4c995ef4227bd4de64cd3910637ee6162e", "versionType": "git"}, {"status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "lessThan": "f3a9c95a15d2f4466acad5c68faeff79ca5e9f47", "versionType": "git"}], "programFiles": ["drivers/md/dm-rq.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.31", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.252", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.202", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.165", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.128", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.75", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.16", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/md/dm-rq.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/ece6720de9403260088209b0b92d45e0b49ff856"}, {"url": "https://git.kernel.org/stable/c/8200fca818c1e2f65bc6cb16d934ff6049302197"}, {"url": "https://git.kernel.org/stable/c/b307b6307f6459841312432bd4bc9519cbac97f5"}, {"url": "https://git.kernel.org/stable/c/4f9e7ca933a9fbf9912a384b061a00c77332cbf0"}, {"url": "https://git.kernel.org/stable/c/cf2d06c9fd4b6521ea5b7f73c99c64c2c6f5e224"}, {"url": "https://git.kernel.org/stable/c/6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3"}, {"url": "https://git.kernel.org/stable/c/c8a23d4c995ef4227bd4de64cd3910637ee6162e"}, {"url": "https://git.kernel.org/stable/c/f3a9c95a15d2f4466acad5c68faeff79ca5e9f47"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "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] <TASK>\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] </TASK>\n\nRemove the blk_should_fake_timeout() check from dm, as dm has no\nnative timeout handling and should not attempt to fake timeouts."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.252", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.202", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.165", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.128", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.75", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.16", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.6", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "2.6.31"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:22:09.779Z"}}}, "cveMetadata": {"cveId": "CVE-2026-43314", "state": "PUBLISHED", "dateUpdated": "2026-11-06T15:42:48.183Z", "dateReserved": "2026-05-01T14:12:56.001Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-05-08T13:11:31.068Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"versionType": "git"}, {"lessThan": "6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3", "status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "versionType": "git"}, {"lessThan": "c8a23d4c995ef4227bd4de64cd3910637ee6162e", "status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "versionType": "git"}, {"lessThan": "f3a9c95a15d2f4466acad5c68faeff79ca5e9f47", "status": "affected", "version": "e6ee8c0b767540f59e20da3ced282601db8aa502", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/md/dm-rq.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"lessThan": "2.6.31", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.252", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.202", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.165", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.128", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.75", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.16", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "790A3A0E-E329-48DE-816C-2EDD7B22E08B", "versionEndExcluding": "5.10.252", "versionStartIncluding": "2.6.31", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4002FC2B-1456-4666-B240-0EBF590C4671", "versionEndExcluding": "5.15.202", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "797C7F46-D0BE-4FB8-A502-C5EF8E6B6654", "versionEndExcluding": "6.1.165", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2", "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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] <TASK>\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] </TASK>\n\nRemove the blk_should_fake_timeout() check from dm, as dm has no\nnative timeout handling and should not attempt to fake timeouts."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndm: eliminar el tiempo de espera falso para evitar la fuga de solicitudes\n\nDesde el commit 15f73f5b3e59 (\u2019blk-mq: mover la inyecci\u00f3n de fallos fuera de blk_mq_complete_request\u2019), los controladores son responsables de llamar a blk_should_fake_timeout() en las rutas de c\u00f3digo y oportunidades adecuadas.\n\nSin embargo, el controlador dm no implementa su propio gestor de tiempo de espera y depende del manejo del tiempo de espera de sus dispositivos esclavos.\n\nSi un error de io-timeout-fail se inyecta en un dispositivo dm, la solicitud se filtrar\u00e1 y nunca se completar\u00e1, lo que har\u00e1 que las tareas se cuelguen indefinidamente.\n\nReproducci\u00f3n:\n1. preparar dm que tiene un dispositivo esclavo iscsi\n2. inyectar io-timeout-fail en 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. leer/escribir dm\n4. iscsiadm -m node -u\n\nResultado: tarea colgada como se muestra a continuaci\u00f3n\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] \u201cecho 0 > /proc/sys/kernel/hung_task_timeout_secs\u201d disables this message.\n[ 862.244718] task:kworker/u514:2 state:D stack:0 pid:151 tgid:151 ppid:2 task_flags:0x 4288060 flags:0x 00080000\n[ 862.245024] Workqueue: iscsi_ctrl_3:1 __iscsi_unbind_session [scsi_transport_iscsi]\n[ 862.245264] Call Trace:\n[ 862.245587] [TASK]\n[ 862.245814] __schedule+0x810/0x 15c0\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] [/TASK]\n\nEliminar la comprobaci\u00f3n blk_should_fake_timeout() de dm, ya que dm no tiene un manejo de tiempo de espera nativo y no deber\u00eda intentar simular tiempos de espera."}], "id": "CVE-2026-43314", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43314", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:35:18.482577Z", "version": "2.0.3"}}]}, "published": "2026-05-08T14:16:39.830", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4f9e7ca933a9fbf9912a384b061a00c77332cbf0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8200fca818c1e2f65bc6cb16d934ff6049302197"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b307b6307f6459841312432bd4bc9519cbac97f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c8a23d4c995ef4227bd4de64cd3910637ee6162e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cf2d06c9fd4b6521ea5b7f73c99c64c2c6f5e224"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ece6720de9403260088209b0b92d45e0b49ff856"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f3a9c95a15d2f4466acad5c68faeff79ca5e9f47"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-772"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: dm: remove fake timeout to avoid leak request", "id": "2468086", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468086"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's device mapper (dm) driver. When an I/O timeout failure is intentionally introduced to a device mapper device, the driver does not correctly manage the timeout. This oversight causes a request to remain uncompleted, leading to system tasks hanging indefinitely. This vulnerability can result in a Denial of Service (DoS) condition, rendering the system unresponsive."], "name": "CVE-2026-43314", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43314\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43314\nhttps://lore.kernel.org/linux-cve-announce/2026050801-CVE-2026-43314-70ae@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,ece6720de9403260088209b0b92d45e0b49ff856)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8200fca818c1e2f65bc6cb16d934ff6049302197)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,b307b6307f6459841312432bd4bc9519cbac97f5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,4f9e7ca933a9fbf9912a384b061a00c77332cbf0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,cf2d06c9fd4b6521ea5b7f73c99c64c2c6f5e224)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,6cdb21e0c9fdee484feba14fc9e72e9d07daf9f3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,c8a23d4c995ef4227bd4de64cd3910637ee6162e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,f3a9c95a15d2f4466acad5c68faeff79ca5e9f47)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.252,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.202,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.16,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.6,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-08T15:15:10.793428+00:00", "updated": "2026-05-09T04:30:17.687177+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}