PCI: endpoint: Avoid creating sub-groups asynchronously
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
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/pci_ep/functions/pci_epf_test # for i in {1..20}; do mkdir test && rmdir test; done BUG: kernel NULL pointer dereference, address: 0000000000000088 ... Call Trace: configfs_register_group+0x3d/0x190 pci_epf_cfs_work+0x41/0x110 process_one_work+0x18f/0x350 worker_thread+0x25a/0x3a0 Fix this issue by using configfs_add_default_group() API which does not have the deadlock problem as configfs_register_group() and does not require the delayed work handler. [mani: slightly reworded the description and added stable list]
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 | 5.12 and later | 5.15.201, 6.1.164, 6.6.127, 6.12.72, 6.18.11, 6.19.1, 7.0 | Patch available | CNA |
- Linux VendorLinux Affected 5.12 and later Fixed in 5.15.201, 6.1.164, 6.6.127, 6.12.72, 6.18.11, 6.19.1, 7.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.12 to before 5.15.201; 5.16 to before 6.1.164; 6.2 to before 6.6.127; 6.7 to before 6.12.72; 6.13 to before 6.18.11; 6.19 to before 6.19.1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.12 to before 5.15.201; 5.16 to before 6.1.164; 6.2 to before 6.6.127; 6.7 to before 6.12.72; 6.13 to before 6.18.11; 6.19 to before 6.19.1 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.201, 6.1.164, 6.6.127, 6.12.72, 6.18.11, 6.19.1, 7.0
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-71233
- 2026-10-03 Alias added: GHSA-78xc-39m5-v2c6
References
Patch 7
- https://git.kernel.org/stable/c/fa9fb38f5fe9c80094c2138354d45cdc8d094d69
- https://git.kernel.org/stable/c/5f609b3bffd4207cf9f2c9b41e1978457a5a1ea9
- https://git.kernel.org/stable/c/8cb905eca73944089a0db01443c7628a9e87012d
- https://git.kernel.org/stable/c/d9af3cf58bb4c8d6dea4166011c780756b1138b5
- https://git.kernel.org/stable/c/24a253c3aa6d9a2cde46158ce9782e023bfbf32d
- https://git.kernel.org/stable/c/73cee890adafa2c219bb865356e08e7f82423fe5
- https://git.kernel.org/stable/c/7c5c7d06bd1f86d2c3ebe62be903a4ba42db4d2c
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- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2025-71233 · CVE Program
- CVE-2025-71233 · NVD
- FIRST EPSS
- GHSA-78xc-39m5-v2c6 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-71233 · Red Hat security data · CC BY 4.0
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