powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 4 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver The commit 1010b4c012b0 ("powerpc/eeh: Make EEH driver device hotplug safe") refactored the EEH code such that the pci_rescan_remove_lock is held at the beginning of eeh_handle_normal_event() and the eeh_reset_device() is called with that lock being held. Looks like the commit missed to remove the existing lock/unlock inside eeh_rmv_device() which is no longer necessary. This is causing the eehd to hang on the lock which it actually holds when that code path is taken. [<0>] 0xc00000011c78f870 [<0>] __switch_to+0xfc/0x1a0 [<0>] pci_lock_rescan_remove+0x30/0x44 [<0>] eeh_rmv_device+0x290/0x2e0 [<0>] eeh_pe_dev_traverse+0x80/0x130 [<0>] eeh_reset_device+0xcc/0x23c [<0>] eeh_handle_normal_event+0x830/0xa80 [<0>] eeh_event_handler+0xf8/0x190 [<0>] kthread+0x194/0x1b0 [<0>] start_kernel_thread+0x14/0x18 The issue is seen for cases where the errors are detected on the PHB directly AND|OR for devices where the driver error_detected() returns PCI_ERS_RESULT_NEED_RESET, and driver being not EEH sensitive(i.e no error handlers like slot_reset(), resume() etc defined).
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.10.241 to before 5.10.271; 5.15.190 to before 5.15.222; 6.1.148 to before 6.1.189; 6.6.102 to before 6.6.158; 6.12.42 to before 6.12.111; 6.15.10 to before 6.16; 6.16.1 to before 6.17 | 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.16, 6.17 | Patch available | CNA |
| Linux | Linux | 6.17 and later | 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3 | Patch available | CNA |
- Linux VendorLinux Affected 5.10.241 to before 5.10.271; 5.15.190 to before 5.15.222; 6.1.148 to before 6.1.189; 6.6.102 to before 6.6.158; 6.12.42 to before 6.12.111; 6.15.10 to before 6.16; 6.16.1 to before 6.17 Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.16, 6.17 Patch available CNA
- Linux VendorLinux Affected 6.17 and later Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.16, 6.17
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 5 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-97948
- 2026-10-03 Alias added: GHSA-wgj5-j7wg-2jm2
- 2026-10-03 Fix available: Linux/Linux@24524fca27da674668941440e8e05cdfec0b0222, Linux/Linux@3833dfae0680b6b16e2469fbc90aa48376311cd8, Linux/Linux@460fab22b65138531082910702f74b048b25237b +5 · CNA
- 2026-10-03 4 new references · CNA
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-07 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/3833dfae0680b6b16e2469fbc90aa48376311cd8
- https://git.kernel.org/stable/c/24524fca27da674668941440e8e05cdfec0b0222
- https://git.kernel.org/stable/c/a58531181363219fa5de2b53d5d7274dcdfca98b
- https://git.kernel.org/stable/c/460fab22b65138531082910702f74b048b25237b
- https://git.kernel.org/stable/c/102e3dc5ab5ba052e294819e83384166b242c1ec
- https://git.kernel.org/stable/c/2920af33d097ca335e492b346af70b72986ad6dc
- https://git.kernel.org/stable/c/85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4
- https://git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a
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Sources
- CVE-2026-97948 · CVE Program
- CVE-2026-97948 · NVD
- FIRST EPSS
- GHSA-wgj5-j7wg-2jm2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-97948 · Red Hat security data · CC BY 4.0
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