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Red Hat: CVE-2024-26828: kernel: cifs: fix underflow in parse_server_interfaces() (Multiple Advisories)

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Red Hat: CVE-2024-26828: kernel: cifs: fix underflow in parse_server_interfaces() (Multiple Advisories)

Severity
7
CVSS
(AV:A/AC:L/Au:S/C:N/I:C/A:C)
Published
04/17/2024
Created
05/31/2024
Added
05/30/2024
Modified
05/30/2024

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

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