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Message-ID: <20240326175007.1388794-12-lee@kernel.org> Date: Tue, 26 Mar 2024 17:50:10 +0000 From: Lee Jones <lee@...nel.org> To: linux-cve-announce@...r.kernel.org Cc: Lee Jones <lee@...nel.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 e5d30f7da357 and fixed in 6.6.15 with commit 40e0d0746390 Issue introduced in 6.7 with commit 92214be5979c and fixed in 6.7.3 with commit 33cdeae8c6fb Issue introduced in 6.7 with commit 92214be5979c and fixed in 6.8 with commit 3876638b2c7e 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
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