| 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-2025-21748: ksmbd: fix integer overflows on 32 bit systems |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix integer overflows on 32 bit systems |
| |
| On 32bit systems the addition operations in ipc_msg_alloc() can |
| potentially overflow leading to memory corruption. |
| Add bounds checking using KSMBD_IPC_MAX_PAYLOAD to avoid overflow. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21748 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 5.15.179 with commit f3b9fb2764591d792d160f375851013665a9e820 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.1.129 with commit 760568c1f62ea874e8fb492f9cfa4f47b4b8391e |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.6.78 with commit 82f59d64e6297f270311b16b5dcf65be406d1ea3 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.12.14 with commit b4b902737746c490258de5cb55cab39e79927a67 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.13.3 with commit ecb9947fa7c99a77b04d43404c6988a0d326e4a0 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.14 with commit aab98e2dbd648510f8f51b83fbf4721206ccae45 |
| |
| 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-2025-21748 |
| 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/transport_ipc.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/f3b9fb2764591d792d160f375851013665a9e820 |
| https://git.kernel.org/stable/c/760568c1f62ea874e8fb492f9cfa4f47b4b8391e |
| https://git.kernel.org/stable/c/82f59d64e6297f270311b16b5dcf65be406d1ea3 |
| https://git.kernel.org/stable/c/b4b902737746c490258de5cb55cab39e79927a67 |
| https://git.kernel.org/stable/c/ecb9947fa7c99a77b04d43404c6988a0d326e4a0 |
| https://git.kernel.org/stable/c/aab98e2dbd648510f8f51b83fbf4721206ccae45 |
