CVE-2026-72312

Summary

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-af: fix VF bringup affecting PF promiscuous state

Mbox handling of nix_set_rx_mode for a VF with promiscuous and all_multi flags set to false causes deletion of the PF's promiscuous and allmulti MCAM rules. This occurs because the APIs that enable/disable these rules operate only on the PF, even when the mbox request is made via a VF interface.

Guard both rvu_npc_enable_allmulti_entry() and rvu_npc_enable_promisc_entry() disable paths with an is_vf() check so that a VF bringing up or tearing down its interface cannot inadvertently clear the PF's MCAM rules.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux967db3529ecac305d230aa4e60abddf6ab63543a < daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9caffected
LinuxLinux967db3529ecac305d230aa4e60abddf6ab63543a < 212c59e5e416859579272288fd325148fc316109affected
LinuxLinux967db3529ecac305d230aa4e60abddf6ab63543a < 53e17d9ed779ad25870abb9c31bc294c71a2278caffected
LinuxLinux967db3529ecac305d230aa4e60abddf6ab63543a < 3de77d2f34c2bc2acaedabc2c5e0a561b85c283aaffected
LinuxLinux967db3529ecac305d230aa4e60abddf6ab63543a < 3cf83432e0561aef6d7ec2664909d12d0ff0ffc1affected
LinuxLinux967db3529ecac305d230aa4e60abddf6ab63543a < fabb881df322da25442f98d23f5fa371e3c78ec4affected
LinuxLinux5.14affected
LinuxLinux0 < 5.14unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References