CVE-2024-57925: ksmbd: fix a missing return value check bug
First published: Sun Jan 19 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.15.145<5.16 | |
| Linux Kernel | >=6.1.71<6.1.125 | |
| Linux Kernel | >=6.6<6.6.72 | |
| Linux Kernel | >=6.7<6.12.10 | |
| Linux Kernel | =6.13-rc1 | |
| Linux Kernel | =6.13-rc2 | |
| Linux Kernel | =6.13-rc3 | |
| Linux Kernel | =6.13-rc4 | |
| Linux Kernel | =6.13-rc5 | |
| Linux Kernel | =6.13-rc6 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 | |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- 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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-57925
- https://nvd.nist.gov/vuln/detail/CVE-2024-57925
- https://launchpad.net/bugs/cve/CVE-2024-57925
- https://security-tracker.debian.org/tracker/CVE-2024-57925
- https://ubuntu.com/security/CVE-2024-57925
- https://git.kernel.org/linus/4c16e1cadcbcaf3c82d5fc310fbd34d0f5d0db7c
Frequently Asked Questions
What is the severity of CVE-2024-57925?
CVE-2024-57925 has a severity rating that indicates it poses a risk due to a missing return value check that could lead to illegal memory access.
How do I fix CVE-2024-57925?
The fix for CVE-2024-57925 involves updating to the latest version of the Linux kernel that addresses this allocation issue.
What systems are affected by CVE-2024-57925?
CVE-2024-57925 affects systems running the Linux kernel that utilize the ksmbd SMB server.
What conditions lead to the exploitation of CVE-2024-57925?
CVE-2024-57925 can potentially be exploited when the ksmbd_alloc_work_struct fails, resulting in a NULL pointer being used.
Is there a workaround for CVE-2024-57925?
While the best practice is to update the kernel, limiting access to the SMB functionality can serve as a temporary workaround for CVE-2024-57925.
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