CVE-2026-72347 (GCVE-0-2026-72347)
Vulnerability from cvelistv5
Published
2026-08-15 05:55
Modified
2026-10-16 18:55
Severity ?
7.3 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_connmark: reject invalid shift parameters Revision 2 of the CONNMARK target accepts user-controlled shift parameters and applies them to 32-bit mark values in connmark_tg_shift(). A shift_bits value of 32 or more triggers an undefined-shift bug when the rule is evaluated. Invalid shift_dir values are also accepted and silently fall back to the left-shift path. Reject invalid revision-2 shift parameters in connmark_tg_check() so malformed rules fail at installation time, before they can reach the packet path.
References
Impacted products
Vendor Product Version
Linux Linux Version: 472a73e00757b971d613d796374d2727b2e4954d
Version: 472a73e00757b971d613d796374d2727b2e4954d
Version: 472a73e00757b971d613d796374d2727b2e4954d
Version: 472a73e00757b971d613d796374d2727b2e4954d
Version: 472a73e00757b971d613d796374d2727b2e4954d
Version: 472a73e00757b971d613d796374d2727b2e4954d
Version: 472a73e00757b971d613d796374d2727b2e4954d
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