| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49646: wifi: mac80211: fix queue selection for mesh/OCB interfaces |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: mac80211: fix queue selection for mesh/OCB interfaces |
| |
| When using iTXQ, the code assumes that there is only one vif queue for |
| broadcast packets, using the BE queue. Allowing non-BE queue marking |
| violates that assumption and txq->ac == skb_queue_mapping is no longer |
| guaranteed. This can cause issues with queue handling in the driver and |
| also causes issues with the recent ATF change, resulting in an AQL |
| underflow warning. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49646 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.207 with commit 444be5a02b77f3b7a8ac9c1a0b074fbb3bd89cd0 |
| Fixed in 5.10.132 with commit e013ea2a51a94b903b396a8dff531a07d470335d |
| Fixed in 5.15.56 with commit 5a9df31017999197b6e60535940f2f2fe1bd3b0d |
| Fixed in 5.18.13 with commit 41ecab279a70dced9005f4d55fa0fcde8938603f |
| Fixed in 5.19 with commit 50e2ab39291947b6c6c7025cf01707c270fcde59 |
| |
| 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-2022-49646 |
| 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: |
| net/mac80211/wme.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/444be5a02b77f3b7a8ac9c1a0b074fbb3bd89cd0 |
| https://git.kernel.org/stable/c/e013ea2a51a94b903b396a8dff531a07d470335d |
| https://git.kernel.org/stable/c/5a9df31017999197b6e60535940f2f2fe1bd3b0d |
| https://git.kernel.org/stable/c/41ecab279a70dced9005f4d55fa0fcde8938603f |
| https://git.kernel.org/stable/c/50e2ab39291947b6c6c7025cf01707c270fcde59 |
