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

Read the record on cve.org

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

CVSSScoreVectorSource
3.19.4 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:HLinux
3.16.7 MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:HCISA-ADP

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • fe856be475f7cf5ffcde57341d175ce9fd09434b to before 3babdcb5f1809a9a41e31547a063dedf6bb44ccaAffected
  • fe856be475f7cf5ffcde57341d175ce9fd09434b to before 7190353835b4a219abb70f90b06cdcae97f11512Affected
  • fe856be475f7cf5ffcde57341d175ce9fd09434b to before f7ff1c89fb6e9610d2b01c1821727729e6609308Affected
  • fe856be475f7cf5ffcde57341d175ce9fd09434b to before df2af9fdbc4ddde18a3371c4ca1a86596e8be301Affected
  • fe856be475f7cf5ffcde57341d175ce9fd09434b to before cffe487026be13eaf37ea28b783d9638ab147204Affected
LinuxLinux
  • 4.18Affected
  • before 4.18Not affected
  • 5.15.224 through 5.15.*Not affected
  • 6.1.79 through 6.1.*Not affected
  • 6.6.18 through 6.6.*Not affected
  • 6.7.6 through 6.7.*Not affected
  • 6.8 and laterNot affected

References

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