CVE-2026-72347 netfilter: xt_connmark: reject invalid shift parameters

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtconnmark: reject invalid shift parameters Revision 2 of the CONNMARK target accepts user-controlled shift parameters and applies them to 32-bit mark values in connmarktgshift. A shiftbits value of 32 or more triggers...

EUVD-2026-59246

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtconnmark: reject invalid shift parameters Revision 2 of the CONNMARK target accepts user-controlled shift parameters and applies them to 32-bit mark values in connmarktgshift. A shiftbits value of 32 or more triggers...

CVE-2026-72347 netfilter: xt_connmark: reject invalid shift parameters

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtconnmark: reject invalid shift parameters Revision 2 of the CONNMARK target accepts user-controlled shift parameters and applies them to 32-bit mark values in connmarktgshift. A shiftbits value of 32 or more triggers...

CVE-2026-72347

The CVE-2026-72347 issue affects the Linux kernel netfilter CONNMARK target (xt_connmark). Revision 2 allows user-controlled shift parameters applied to 32-bit connmark values in connmark_tg_shift(), where a shift_bits value of 32+ triggers an undefined-shift bug, and invalid shift_dir values are...