CVE-2024-26828
cifs: fix underflow in parse_server_interfaces()
- State
- Published
- Severity
- 9.4 Critical
- Published
- Apr 17, 2024
- Updated
- Oct 30, 2026
- Reserved
- Feb 19, 2024
Description
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix underflow in parse_server_interfaces()
In this loop, we step through the buffer and after each item we check if the size_left is greater than the minimum size we need. However, the problem is that "bytes_left" is type ssize_t while sizeof() is type size_t. That means that because of type promotion, the comparison is done as an unsigned and if we have negative bytes left the loop continues instead of ending.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.4 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H | Linux |
| 3.1 | 6.7 Medium | CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H | CISA-ADP |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
LinuxLinux |
|
LinuxLinux |
|
References
- https://git.kernel.org/stable/c/3babdcb5f1809a9a41e31547a063dedf6bb44cca
- https://git.kernel.org/stable/c/7190353835b4a219abb70f90b06cdcae97f11512
- https://git.kernel.org/stable/c/f7ff1c89fb6e9610d2b01c1821727729e6609308
- https://git.kernel.org/stable/c/df2af9fdbc4ddde18a3371c4ca1a86596e8be301
- https://git.kernel.org/stable/c/cffe487026be13eaf37ea28b783d9638ab147204
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