AZL-77951
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-77951.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-77951
- Upstream
- Published
- 2026-02-18T16:22:30Z
- Modified
- 2026-04-01T05:23:10.748885Z
- Summary
- CVE-2025-71233 affecting package kernel 6.6.126.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
PCI: endpoint: Avoid creating sub-groups asynchronously
The asynchronous creation of sub-groups by a delayed work could lead to a NULL pointer dereference when the driver directory is removed before the work completes.
The crash can be easily reproduced with the following commands:
# cd /sys/kernel/config/pciep/functions/pciepf_test # for i in {1..20}; do mkdir test && rmdir test; done
BUG: kernel NULL pointer dereference, address: 0000000000000088 ... Call Trace: configfsregistergroup+0x3d/0x190 pciepfcfswork+0x41/0x110 processonework+0x18f/0x350 workerthread+0x25a/0x3a0
Fix this issue by using configfsadddefaultgroup() API which does not have the deadlock problem as configfsregister_group() and does not require the delayed work handler.
[mani: slightly reworded the description and added stable list]
- References