| 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-2023-52626: net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context |
| |
| Indirection (*) is of lower precedence than postfix increment (++). Logic |
| in napi_poll context would cause an out-of-bound read by first increment |
| the pointer address by byte address space and then dereference the value. |
| Rather, the intended logic was to dereference first and then increment the |
| underlying value. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52626 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6.3 with commit e5d30f7da35720060299483e65fc372980a82dfb and fixed in 6.6.15 with commit 40e0d0746390c5b0c31144f4f1688d72f3f8d790 |
| Issue introduced in 6.7 with commit 92214be5979c0961a471b7eaaaeacab41bdf456c and fixed in 6.7.3 with commit 33cdeae8c6fb58cc445f859b67c014dc9f60b4e0 |
| Issue introduced in 6.7 with commit 92214be5979c0961a471b7eaaaeacab41bdf456c and fixed in 6.8 with commit 3876638b2c7ebb2c9d181de1191db0de8cac143a |
| Issue introduced in 6.5.13 with commit 42b11d1293e5a0f932c0b6e891b2c7bae57b839d |
| |
| 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-2023-52626 |
| 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/ptp.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/40e0d0746390c5b0c31144f4f1688d72f3f8d790 |
| https://git.kernel.org/stable/c/33cdeae8c6fb58cc445f859b67c014dc9f60b4e0 |
| https://git.kernel.org/stable/c/3876638b2c7ebb2c9d181de1191db0de8cac143a |
