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cifs: fix underflow in parse_server_interfaces()

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2024-26828

Published

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.

Source published
17 Apr 2024 09:43:52 UTC
Source modified
5 Aug 2026 11:27:41 UTC
Observed here
23 Oct 2026 15:48:27 UTC
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CVSS 3.1 · 9.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

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Sources read 6 Nov 23:29 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current