| 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-2021-46948: sfc: farch: fix TX queue lookup in TX event handling |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| sfc: farch: fix TX queue lookup in TX event handling |
| |
| We're starting from a TXQ label, not a TXQ type, so |
| efx_channel_get_tx_queue() is inappropriate (and could return NULL, |
| leading to panics). |
| |
| The Linux kernel CVE team has assigned CVE-2021-46948 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10 with commit 12804793b17c0e19115a90d98f2f3df0cb79e233 and fixed in 5.10.36 with commit bf2b941d0a6f2d3b9f5fa3c4c21bdd54f71ce253 |
| Issue introduced in 5.10 with commit 12804793b17c0e19115a90d98f2f3df0cb79e233 and fixed in 5.11.20 with commit 35c7a83ad1bb1d48ae249346e61b1132bcbf9052 |
| Issue introduced in 5.10 with commit 12804793b17c0e19115a90d98f2f3df0cb79e233 and fixed in 5.12.3 with commit e531db1ea6f98c9612cb2de093a107c7eadfb96c |
| Issue introduced in 5.10 with commit 12804793b17c0e19115a90d98f2f3df0cb79e233 and fixed in 5.13 with commit 83b09a1807415608b387c7bc748d329fefc5617e |
| |
| 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-2021-46948 |
| 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/ethernet/sfc/farch.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/bf2b941d0a6f2d3b9f5fa3c4c21bdd54f71ce253 |
| https://git.kernel.org/stable/c/35c7a83ad1bb1d48ae249346e61b1132bcbf9052 |
| https://git.kernel.org/stable/c/e531db1ea6f98c9612cb2de093a107c7eadfb96c |
| https://git.kernel.org/stable/c/83b09a1807415608b387c7bc748d329fefc5617e |
