| 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-2022-48882: net/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY) |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY) |
| |
| Upon updating MAC security entity (SecY) in hw offload path, the macsec |
| security association (SA) initialization routine is called. In case of |
| extended packet number (epn) is enabled the salt and ssci attributes are |
| retrieved using the MACsec driver rx_sa context which is unavailable when |
| updating a SecY property such as encoding-sa hence the null dereference. |
| Fix by using the provided SA to set those attributes. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48882 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1 with commit 4411a6c0abd3e55b4a4fb9432b3a0553f12337c2 and fixed in 6.1.7 with commit 514d9c6a39213d8200884e70f60ce7faef1ee597 |
| Issue introduced in 6.1 with commit 4411a6c0abd3e55b4a4fb9432b3a0553f12337c2 and fixed in 6.2 with commit 9828994ac492e8e7de47fe66097b7e665328f348 |
| |
| 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-2022-48882 |
| 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/mellanox/mlx5/core/en_accel/macsec.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/514d9c6a39213d8200884e70f60ce7faef1ee597 |
| https://git.kernel.org/stable/c/9828994ac492e8e7de47fe66097b7e665328f348 |
