CVE-2026-72312

octeontx2-af: fix VF bringup affecting PF promiscuous state

State: Published
Severity: 7.9 High
Published: Aug 15, 2026
Updated: Oct 16, 2026
Reserved: Aug 9, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.9 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	967db3529ecac305d230aa4e60abddf6ab63543a to before daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9cAffected 967db3529ecac305d230aa4e60abddf6ab63543a to before 212c59e5e416859579272288fd325148fc316109Affected 967db3529ecac305d230aa4e60abddf6ab63543a to before 53e17d9ed779ad25870abb9c31bc294c71a2278cAffected 967db3529ecac305d230aa4e60abddf6ab63543a to before 3de77d2f34c2bc2acaedabc2c5e0a561b85c283aAffected 967db3529ecac305d230aa4e60abddf6ab63543a to before 3cf83432e0561aef6d7ec2664909d12d0ff0ffc1Affected 967db3529ecac305d230aa4e60abddf6ab63543a to before fabb881df322da25442f98d23f5fa371e3c78ec4Affected
LinuxLinux	5.14Affected before 5.14Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

967db3529ecac305d230aa4e60abddf6ab63543a to before daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9cAffected
967db3529ecac305d230aa4e60abddf6ab63543a to before 212c59e5e416859579272288fd325148fc316109Affected
967db3529ecac305d230aa4e60abddf6ab63543a to before 53e17d9ed779ad25870abb9c31bc294c71a2278cAffected
967db3529ecac305d230aa4e60abddf6ab63543a to before 3de77d2f34c2bc2acaedabc2c5e0a561b85c283aAffected
967db3529ecac305d230aa4e60abddf6ab63543a to before 3cf83432e0561aef6d7ec2664909d12d0ff0ffc1Affected
967db3529ecac305d230aa4e60abddf6ab63543a to before fabb881df322da25442f98d23f5fa371e3c78ec4Affected

LinuxLinux

5.14Affected
before 5.14Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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