wifi: at76c50x: fix use after free access in at76_disconnect
Priority LOW 33CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: at76c50x: fix use after free access in at76_disconnect The memory pointed to by priv is freed at the end of at76_delete_device function (using ieee80211_free_hw). But the code then accesses the udev field of the freed object to put the USB device. This may also lead to a memory leak of the usb device. Fix this by using udev from interface.
Why it matters now
EPSS 0.00201 10th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.4.293, 5.10.237, 5.15.181 +5
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 | 3.17 and later | 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.25, 6.14.4, 6.15 | Patch available | CNA |
- Linux VendorLinux Affected 3.17 and later Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.25, 6.14.4, 6.15 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.17.1 to before 5.4.293; 5.5 to before 5.10.237; 5.11 to before 5.15.181; 5.16 to before 6.1.135; 6.2 to before 6.6.88; 6.7 to before 6.12.25; 6.13 to before 6.14.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.17:-:*:*:*:*:*:* | 3.17 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.17:rc5:*:*:*:*:*:* | 3.17 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.17:rc6:*:*:*:*:*:* | 3.17 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.17:rc7:*:*:*:*:*:* | 3.17 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | 6.15 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* | 6.15 rc2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.17.1 to before 5.4.293; 5.5 to before 5.10.237; 5.11 to before 5.15.181; 5.16 to before 6.1.135; 6.2 to before 6.6.88; 6.7 to before 6.12.25; 6.13 to before 6.14.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.17:-:*:*:*:*:*:* Versions 3.17 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.17:rc5:*:*:*:*:*:* Versions 3.17 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.17:rc6:*:*:*:*:*:* Versions 3.17 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.17:rc7:*:*:*:*:*:* Versions 3.17 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* Versions 6.15 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* Versions 6.15 rc2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.25, 6.14.4, 6.15
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- 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-2025-37796
- 2026-10-03 Alias added: GHSA-7c48-pxh3-297c
References
Patch 8
- https://git.kernel.org/stable/c/c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6
- https://git.kernel.org/stable/c/6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f
- https://git.kernel.org/stable/c/3c619aec1f538333b56746d2f796aab1bca5c9a5
- https://git.kernel.org/stable/c/5e7df74745700f059dc117a620e566964a2e8f2c
- https://git.kernel.org/stable/c/7ca513631fa6ad3011b8b9197cdde0f351103704
- https://git.kernel.org/stable/c/a9682bfef2cf3802515a902e964d774e137be1b9
- https://git.kernel.org/stable/c/152721cbae42713ecfbca6847e0f102ee6b19546
- https://git.kernel.org/stable/c/27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- 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-2025-37796 · CVE Program
- CVE-2025-37796 · NVD
- FIRST EPSS
- GHSA-7c48-pxh3-297c · GitHub Advisory Database · CC BY 4.0
- CVE-2025-37796 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences