by Kastro CVE-2024-26828
Linux Linux — cifs: fix underflow in parse_server_interfaces()
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
Linuxfe856be475f7cf5ffcde57341d175ce9fd09434b – < 3babdcb5f1809a9a41e31547a063dedf6bb44cca3babdcb5f1809a9a41e31547a063dedf6bb44ccaCNA
Linuxfe856be475f7cf5ffcde57341d175ce9fd09434b – < 7190353835b4a219abb70f90b06cdcae97f115127190353835b4a219abb70f90b06cdcae97f11512CNA
Linuxfe856be475f7cf5ffcde57341d175ce9fd09434b – < f7ff1c89fb6e9610d2b01c1821727729e6609308f7ff1c89fb6e9610d2b01c1821727729e6609308CNA
Linuxfe856be475f7cf5ffcde57341d175ce9fd09434b – < df2af9fdbc4ddde18a3371c4ca1a86596e8be301df2af9fdbc4ddde18a3371c4ca1a86596e8be301CNA
Linuxfe856be475f7cf5ffcde57341d175ce9fd09434b – < cffe487026be13eaf37ea28b783d9638ab147204cffe487026be13eaf37ea28b783d9638ab147204CNA
Linux4.18–CNA
Scores by source
Linux (CNA)9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
CISA ADP6.7CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial