VulnerabilityPublished 26 Aug 2026Updated 21 Oct 2026

CVE-2026-74754: Linux kernel · scsi: core: pair EH runtime PM get and put

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in fdc93f4a801077efbf1b87570ade8d8f325de62f : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in fdc93f4a801077efbf1b87570ade8d8f325de62f, e83eed1bea142c8fe852fd53156845b88252ecd8, 872f486259ae0bc6b73ca4735a15d013241f73e9 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ae0751ffc77e7f21629970fdab5528c573e637f8, < fdc93f4a801077efbf1b87570ade8d8f325de62f	Fixed in fdc93f4a801077efbf1b87570ade8d8f325de62f
LinuxLinux	Affected ≥ ae0751ffc77e7f21629970fdab5528c573e637f8, < e83eed1bea142c8fe852fd53156845b88252ecd8	Fixed in e83eed1bea142c8fe852fd53156845b88252ecd8
LinuxLinux	Affected ≥ ae0751ffc77e7f21629970fdab5528c573e637f8, < 872f486259ae0bc6b73ca4735a15d013241f73e9	Fixed in 872f486259ae0bc6b73ca4735a15d013241f73e9
LinuxLinux	Affected ≥ ae0751ffc77e7f21629970fdab5528c573e637f8, < 0038a2a75a15d163f428c93103c6d02d4d231a7a	Fixed in 0038a2a75a15d163f428c93103c6d02d4d231a7a
LinuxLinux	Affected ≥ ae0751ffc77e7f21629970fdab5528c573e637f8, < 1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d	Fixed in 1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d
LinuxLinux	Affected =3.3	Fixed in–

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.

References

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