| 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-2024-26980: ksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf |
| |
| If ->ProtocolId is SMB2_TRANSFORM_PROTO_NUM, smb2 request size |
| validation could be skipped. if request size is smaller than |
| sizeof(struct smb2_query_info_req), slab-out-of-bounds read can happen in |
| smb2_allocate_rsp_buf(). This patch allocate response buffer after |
| decrypting transform request. smb3_decrypt_req() will validate transform |
| request size and avoid slab-out-of-bound in smb2_allocate_rsp_buf(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-26980 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 5.15.159 with commit da21401372607c49972ea87a6edaafb36a17c325 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.1.88 with commit b80ba648714e6d790d69610cf14656be222d0248 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.6.29 with commit 3160d9734453a40db248487f8204830879c207f1 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.8.8 with commit 0977f89722eceba165700ea384f075143f012085 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.9 with commit c119f4ede3fa90a9463f50831761c28f989bfb20 |
| |
| 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-2024-26980 |
| 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/server.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/da21401372607c49972ea87a6edaafb36a17c325 |
| https://git.kernel.org/stable/c/b80ba648714e6d790d69610cf14656be222d0248 |
| https://git.kernel.org/stable/c/3160d9734453a40db248487f8204830879c207f1 |
| https://git.kernel.org/stable/c/0977f89722eceba165700ea384f075143f012085 |
| https://git.kernel.org/stable/c/c119f4ede3fa90a9463f50831761c28f989bfb20 |
