| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-58097: wifi: ath11k: fix RCU stall while reaping monitor destination ring |
| |
| 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 |
| |
| The Linux kernel CVE team has assigned CVE-2024-58097 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.6 with commit d5c65159f2895379e11ca13f62feabe93278985d and fixed in 6.14.2 with commit b4991fc41745645f8050506f5a8578bd11e6b378 |
| Issue introduced in 5.6 with commit d5c65159f2895379e11ca13f62feabe93278985d and fixed in 6.15 with commit 16c6c35c03ea73054a1f6d3302a4ce4a331b427d |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-58097 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/wireless/ath/ath11k/dp_rx.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/b4991fc41745645f8050506f5a8578bd11e6b378 |
| https://git.kernel.org/stable/c/16c6c35c03ea73054a1f6d3302a4ce4a331b427d |
