{"id":"CVE-2026-74754","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: pair EH runtime PM get and put\n\nshost->eh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: pair EH runtime PM get and put\n\nshost->eh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= ae0751ffc77e7f21629970fdab5528c573e637f8 < fdc93f4a801077efbf1b87570ade8d8f325de62f","Linux >= ae0751ffc77e7f21629970fdab5528c573e637f8 < e83eed1bea142c8fe852fd53156845b88252ecd8","Linux >= ae0751ffc77e7f21629970fdab5528c573e637f8 < 872f486259ae0bc6b73ca4735a15d013241f73e9","Linux 3.3"],"published":"2026-08-26","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:49.823","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74754","references":[{"url":"https://git.kernel.org/stable/c/872f486259ae0bc6b73ca4735a15d013241f73e9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e83eed1bea142c8fe852fd53156845b88252ecd8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fdc93f4a801077efbf1b87570ade8d8f325de62f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74754.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-74754"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2524429"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74754"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74754"},{"url":"https://lore.kernel.org/linux-cve-announce/2026082600-CVE-2026-74754-2bb1@gregkh/T"},{"url":"https://git.kernel.org/stable/c/1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d"},{"url":"https://git.kernel.org/stable/c/0038a2a75a15d163f428c93103c6d02d4d231a7a"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00209,"epssPercentile":0.10929,"ingestedAt":"2026-10-15T11:00:41.669Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-911"],"slug":"CVE-2026-74754","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: pair EH runtime PM get and put\n\nshost->eh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once again before\nscsi_autopm_put_host().\n\nThat is racy when a PM-triggered error path flips shost->eh_noresume\nwhile the SCSI EH thread is still running.\n\nThe problem flow looks like this:\nPM path\n  ufshcd_set_dev_pwr_mode()\n    shost->eh_noresume = 1\n    ufshcd_execute_start_stop  <-- trigger EH\n    ...\n    shost->eh_noresume = 0\n\nEH path\n  scsi_error_handler()\n    if (!shost->eh_noresume)\n      scsi_autopm_get_host()  <-- skipped\n    ...\n    if (!shost->eh_noresume)\n       scsi_autopm_put_host()  <-- executed later\n\nIn that case one EH iteration can skip autoresume on entry and still\ndrop a runtime PM reference on exit. That leaves an unmatched runtime PM\nput and can trigger a runtime PM usage count underflow.\n\nFix this by making eh_noresume a regular bool so it can be accessed with\nREAD_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use\nthat snapshot for both runtime PM get and put decisions.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74754.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":224237,"id":"CVE-2026-74754","ts":1792325033677,"field":"cvss","old":null,"new":"5.5"},{"seq":224236,"id":"CVE-2026-74754","ts":1792325033677,"field":"severity","old":"none","new":"medium"}]}