| 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-2023-52479: ksmbd: fix uaf in smb20_oplock_break_ack |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix uaf in smb20_oplock_break_ack |
| |
| drop reference after use opinfo. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52479 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 5.15.135 with commit 694e13732e830cbbfedb562e57f28644927c33fd |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.1.57 with commit 8226ffc759ea59f10067b9acdf7f94bae1c69930 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.5.7 with commit d5b0e9d3563e7e314a850e81f42b2ef6f39882f9 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.6 with commit c69813471a1ec081a0b9bf0c6bd7e8afd818afce |
| |
| 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-2023-52479 |
| 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: |
| fs/smb/server/smb2pdu.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/694e13732e830cbbfedb562e57f28644927c33fd |
| https://git.kernel.org/stable/c/8226ffc759ea59f10067b9acdf7f94bae1c69930 |
| https://git.kernel.org/stable/c/d5b0e9d3563e7e314a850e81f42b2ef6f39882f9 |
| https://git.kernel.org/stable/c/c69813471a1ec081a0b9bf0c6bd7e8afd818afce |
