CVE-2024-26828: cifs: fix underflow in parse_server_interfaces()
First published: Wed Apr 17 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.1.79 | 6.1.79 |
| redhat/kernel | <6.6.18 | 6.6.18 |
| redhat/kernel | <6.7.6 | 6.7.6 |
| redhat/kernel | <6.8 | 6.8 |
| debian/linux | <=5.10.223-1 | 6.1.106-3 6.1.99-1 6.10.9-1 |
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Reference Links
- https://git.kernel.org/stable/c/7190353835b4a219abb70f90b06cdcae97f11512
- https://git.kernel.org/stable/c/cffe487026be13eaf37ea28b783d9638ab147204
- https://git.kernel.org/stable/c/df2af9fdbc4ddde18a3371c4ca1a86596e8be301
- https://git.kernel.org/stable/c/f7ff1c89fb6e9610d2b01c1821727729e6609308
- https://launchpad.net/bugs/cve/CVE-2024-26828
- https://access.redhat.com/security/cve/CVE-2024-26828
- https://lore.kernel.org/linux-cve-announce/2024041703-CVE-2024-26828-b2be@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2275601
- https://access.redhat.com/errata/RHSA-2024:3460
- https://access.redhat.com/errata/RHSA-2024:3461
- https://access.redhat.com/errata/RHSA-2024:5363
- https://bugzilla.redhat.com/show_bug.cgi?id=2275600
- https://git.kernel.org/linus/cffe487026be13eaf37ea28b783d9638ab147204
- https://security-tracker.debian.org/tracker/CVE-2024-26828
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26828
- https://nvd.nist.gov/vuln/detail/CVE-2024-26828
- https://ubuntu.com/security/CVE-2024-26828
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