CVE-2024-57925

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.

Affected Software

References

• https://git.kernel.org/stable/c/271ae0edbfc942795c162e6cf20d2bc02bd7fde4
• https://git.kernel.org/stable/c/2976e91a3e569cf2c92c9f71512c0ab1312fe965
• https://git.kernel.org/stable/c/4c16e1cadcbcaf3c82d5fc310fbd34d0f5d0db7c
• https://git.kernel.org/stable/c/781c743e18bfd9b7dc0383f036ae952bd1486f21
• https://git.kernel.org/stable/c/ee7e40f7fb17f08a8cbae50553e5c2e10ae32fce