CVE-2026-74754scsi: core: pair EH runtime PM get and put
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: core: pair EH runtime PM get and put shost->eh_noresume is currently consulted twice in one error handling iteration: once before scsi_autopm_get_host() and once again before scsi_autopm_put_host(). That is racy when a PM-triggered error path flips shost->eh_noresume while the SCSI EH thread is still running. The problem flow looks like this: PM path ufshcd_set_dev_pwr_mode() shost->eh_noresume = 1 ufshcd_execute_start_stop <-- trigger EH ... shost->eh_noresume = 0 EH path scsi_error_handler() if (!shost->eh_noresume) scsi_autopm_get_host() <-- skipped ... if (!shost->eh_noresume) scsi_autopm_put_host() <-- executed later In that case one EH iteration can skip autoresume on entry and still drop a runtime PM reference on exit. That leaves an unmatched runtime PM put and can trigger a runtime PM usage count underflow. Fix this by making eh_noresume a regular bool so it can be accessed with READ_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use that snapshot for both runtime PM get and put decisions.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected ae0751ffc77e7f21629970fdab5528c573e637f8 – < 9aca00c74730f4bc12d0717d33db637a16ccdfea
- affected ae0751ffc77e7f21629970fdab5528c573e637f8 – < 1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d
- affected ae0751ffc77e7f21629970fdab5528c573e637f8 – < 0038a2a75a15d163f428c93103c6d02d4d231a7a
- affected ae0751ffc77e7f21629970fdab5528c573e637f8 – < fdc93f4a801077efbf1b87570ade8d8f325de62f
- affected ae0751ffc77e7f21629970fdab5528c573e637f8 – < e83eed1bea142c8fe852fd53156845b88252ecd8
- affected ae0751ffc77e7f21629970fdab5528c573e637f8 – < 872f486259ae0bc6b73ca4735a15d013241f73e9
- affected 3.3
- unaffected < 3.3
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.57 – ≤ 6.18.*
- unaffected 7.1.10 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/9aca00c74730f4bc12d0717d33db637a16ccdfea (opens in a new tab)
- https://git.kernel.org/stable/c/1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d (opens in a new tab)
- https://git.kernel.org/stable/c/0038a2a75a15d163f428c93103c6d02d4d231a7a (opens in a new tab)
- https://git.kernel.org/stable/c/fdc93f4a801077efbf1b87570ade8d8f325de62f (opens in a new tab)
- https://git.kernel.org/stable/c/e83eed1bea142c8fe852fd53156845b88252ecd8 (opens in a new tab)
- https://git.kernel.org/stable/c/872f486259ae0bc6b73ca4735a15d013241f73e9 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-66584 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-74754)Record last updated .