| 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-2024-26954: ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16() |
| |
| If ->NameOffset of smb2_create_req is smaller than Buffer offset of |
| smb2_create_req, slab-out-of-bounds read can happen from smb2_open. |
| This patch set the minimum value of the name offset to the buffer offset |
| to validate name length of smb2_create_req(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-26954 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.1.119 with commit d70c2e0904ab3715c5673fd45788a464a246d1db |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.7.12 with commit 3b8da67191e938a63d2736dabb4ac5d337e5de57 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.8.3 with commit 4f97e6a9d62cb1fce82fbf4baff44b83221bc178 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.9 with commit a80a486d72e20bd12c335bcd38b6e6f19356b0aa |
| |
| 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-2024-26954 |
| 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/smb2misc.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/d70c2e0904ab3715c5673fd45788a464a246d1db |
| https://git.kernel.org/stable/c/3b8da67191e938a63d2736dabb4ac5d337e5de57 |
| https://git.kernel.org/stable/c/4f97e6a9d62cb1fce82fbf4baff44b83221bc178 |
| https://git.kernel.org/stable/c/a80a486d72e20bd12c335bcd38b6e6f19356b0aa |
