CVE-2026-97948: Linux kernel · powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 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.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix for this vulnerability has been implemented in the Linux kernel by removing the unnecessary lock/unlock calls inside eeh_rmv_device(). Users should apply the updated kernel versions containing this fix. Since this is a kernel-level issue, upgrading to a patched kernel release is the recommended remediation. Patch status is not explicitly stated but the description indicates the issue has been resolved in the referenced commit. Check the vendor or distribution advisory for the exact patched kernel versions and apply updates accordingly.
Description
A vulnerability in the Linux kernel's powerpc/eeh subsystem caused recursive locking on devices without EEH sensitive drivers, leading to potential hangs in the EEH daemon. This issue arises when error detection occurs on the PHB directly or when a device's driver signals a reset is needed but lacks EEH error handlers. The problem was introduced by a code refactor that failed to remove redundant locking, causing the EEH daemon to deadlock.
References
- ubuntu.com/security/CVE-2026-97948 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97948 (opens in a new tab)
- git.kernel.org/stable/c/2920af33d097ca335e492b346af70b72986ad6dc (opens in a new tab)
- git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a (opens in a new tab)
- git.kernel.org/stable/c/85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4 (opens in a new tab)
- git.kernel.org/stable/c/102e3dc5ab5ba052e294819e83384166b242c1ec (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97948 (opens in a new tab)
- git.kernel.org/stable/c/24524fca27da674668941440e8e05cdfec0b0222 (opens in a new tab)
- git.kernel.org/stable/c/3833dfae0680b6b16e2469fbc90aa48376311cd8 (opens in a new tab)
- git.kernel.org/stable/c/460fab22b65138531082910702f74b048b25237b (opens in a new tab)
- git.kernel.org/stable/c/a58531181363219fa5de2b53d5d7274dcdfca98b (opens in a new tab)