Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath11k: fix RCU stall while reaping monitor destination ring
While processing the monitor destination ring, MSDUs are reaped from the link descriptor based on the corresponding buf_id.
However, sometimes the driver cannot obtain a valid buffer corresponding to the buf_id received from the hardware. This causes an infinite loop in the destination processing, resulting in a kernel crash.
kernel log: ath11k_pci 0000:58:00.0: data msdu_pop: invalid buf_id 309 ath11k_pci 0000:58:00.0: data dp_rx_monitor_link_desc_return failed ath11k_pci 0000:58:00.0: data msdu_pop: invalid buf_id 309 ath11k_pci 0000:58:00.0: data dp_rx_monitor_link_desc_return failed
Fix this by skipping the problematic buf_id and reaping the next entry, replacing the break with the next MSDU processing.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30 Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= d5c65159f2895379e11ca13f62feabe93278985d, < cdb32923699932502b0573f818643aae72ce0cd5; >= d5c65159f2895379e11ca13f62feabe93278985d, < 8db5de0cf02fccf4c759aa58edbe65659daf607c; >= d5c65159f2895379e11ca13f62feabe93278985d, < 9f1a002f0171d27f3554e529f3c70df438f05dfe; >= d5c65159f2895379e11ca13f62feabe93278985d, < b4991fc41745645f8050506f5a8578bd11e6b378; >= d5c65159f2895379e11ca13f62feabe93278985d, < 16c6c35c03ea73054a1f6d3302a4ce4a331b427d |
| Linux | Linux | 5.6 |
References
- https://git.kernel.org/stable/c/16c6c35c03ea73054a1f6d3302a4ce4a331b427dPatch
- https://git.kernel.org/stable/c/8db5de0cf02fccf4c759aa58edbe65659daf607cPatch
- https://git.kernel.org/stable/c/9f1a002f0171d27f3554e529f3c70df438f05dfePatch
- https://git.kernel.org/stable/c/b4991fc41745645f8050506f5a8578bd11e6b378Patch
- https://git.kernel.org/stable/c/cdb32923699932502b0573f818643aae72ce0cd5
Timeline
- Published
- Apr 16, 2025
- Last modified
- Sep 14, 2026
- NVD status
- Modified