| 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-2024-57925: ksmbd: fix a missing return value check bug |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix a missing return value check bug |
| |
| In the smb2_send_interim_resp(), if ksmbd_alloc_work_struct() |
| fails to allocate a node, it returns a NULL pointer to the |
| in_work pointer. This can lead to an illegal memory write of |
| in_work->response_buf when allocate_interim_rsp_buf() attempts |
| to perform a kzalloc() on it. |
| |
| To address this issue, incorporating a check for the return |
| value of ksmbd_alloc_work_struct() ensures that the function |
| returns immediately upon allocation failure, thereby preventing |
| the aforementioned illegal memory access. |
| |
| The Linux kernel CVE team has assigned CVE-2024-57925 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15.145 with commit 6f0207218c4c125f5bf32055ac4220b4ef3b7e67 and fixed in 5.15.177 with commit 781c743e18bfd9b7dc0383f036ae952bd1486f21 |
| Issue introduced in 6.1.71 with commit f8cf1ebb7de62c7d807707ce4abb69d483629263 and fixed in 6.1.125 with commit ee7e40f7fb17f08a8cbae50553e5c2e10ae32fce |
| Issue introduced in 6.6 with commit 041bba4414cda37d00063952c9bff9c3d5812a19 and fixed in 6.6.72 with commit 271ae0edbfc942795c162e6cf20d2bc02bd7fde4 |
| Issue introduced in 6.6 with commit 041bba4414cda37d00063952c9bff9c3d5812a19 and fixed in 6.12.10 with commit 2976e91a3e569cf2c92c9f71512c0ab1312fe965 |
| Issue introduced in 6.6 with commit 041bba4414cda37d00063952c9bff9c3d5812a19 and fixed in 6.13 with commit 4c16e1cadcbcaf3c82d5fc310fbd34d0f5d0db7c |
| |
| 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-2024-57925 |
| 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/781c743e18bfd9b7dc0383f036ae952bd1486f21 |
| https://git.kernel.org/stable/c/ee7e40f7fb17f08a8cbae50553e5c2e10ae32fce |
| https://git.kernel.org/stable/c/271ae0edbfc942795c162e6cf20d2bc02bd7fde4 |
| https://git.kernel.org/stable/c/2976e91a3e569cf2c92c9f71512c0ab1312fe965 |
| https://git.kernel.org/stable/c/4c16e1cadcbcaf3c82d5fc310fbd34d0f5d0db7c |
