CVE-2024-53188: wifi: ath12k: fix crash when unbinding
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix crash when unbinding
If there is an error during some initialization related to firmware, the function ath12kdpcccleanup is called to release resources. However this is released again when the device is unbinded (ath12kpci), and we get: BUG: kernel NULL pointer dereference, address: 0000000000000020 at RIP: 0010:ath12kdpcccleanup.part.0+0xb6/0x500 [ath12k] Call Trace: ath12kdpcccleanup ath12kdpfree ath12kcoredeinit ath12kpciremove ...
The issue is always reproducible from a VM because the MSI addressing initialization is failing.
In order to fix the issue, just set to NULL the released structure in ath12kdpcccleanup at the end.
Other sources
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— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.22-1Fixed in 6.12.25-1 - Configuration
Apply the code fix for CVE-described crash: in ath12k_dp_cc_cleanup, ensure the released structure is set to NULL at the end to prevent NULL pointer dereference during unbinding (ath12k_pci_remove path).
Linux kernel (ath12k) ath12k_dp_cc_cleanup = Set the released structure to NULL at the end of ath12k_dp_cc_cleanup
Event History
Frequently Asked Questions
What is the severity of CVE-2024-53188?
CVE-2024-53188 has been classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2024-53188?
To fix CVE-2024-53188, ensure you update your Linux kernel to a version that includes the relevant patches.
Which versions of the Linux kernel are affected by CVE-2024-53188?
CVE-2024-53188 affects Linux kernel versions ranging from 6.3 to 6.6.64, 6.7 to 6.11.11, and 6.12 to 6.12.2.
What component of the Linux kernel does CVE-2024-53188 affect?
CVE-2024-53188 affects the ath12k wifi driver within the Linux kernel.
Is CVE-2024-53188 specific to certain Linux distributions?
CVE-2024-53188 can impact multiple distributions that utilize vulnerable versions of the Linux kernel.