CVE-2026-98029

CVE CVE-2026-98029EUVD EUVD-2026-86682Published 2026-09-25T10:23:46.000ZLast changed 2026-09-25T14:41:53.000ZCVSS 7.0

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: eth: nfp: bound the ntuple rule dump by the caller's buffer size nfp_net_get_fs_loc() dumps every entry of nn->fs.list into rule_locs[] without consulting cmd->rule_cnt, which is how many entries the caller had room for. ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN and the ioctl sizes the buffer from the rule_cnt userspace passes in, so once an admin has installed flow steering rules any user can ask for fewer slots than there are rules and run off the end of the allocation. A rule_cnt of 0 leaves the buffer pointer NULL and the walk dereferences it. Bail out with -EMSGSIZE when the buffer fills up, the way the other ntuple capable drivers do, and report how many locations were filled so a shrinking rule list does not leave the caller reading stale slots.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 9eb03bb1c035ff6e2c3a34046419446588253dda <a7e023c63e855761c1426cee8d17c2bca32aa339; patch: 0; patch: 7.2.7; patch: 6.12.111; 9eb03bb1c035ff6e2c3a34046419446588253dda <82812583b9c69c241da6da4186f14e9df2516488; patch: 6.18.53; patch: 7.3-rc3; 9eb03bb1c035ff6e2c3a34046419446588253dda <ecebfdaab72a504c10f4907bd00fc3b705ec3b12; 6.8; 9eb03bb1c035ff6e2c3a34046419446588253dda <f1986bf87b0709c95126fe196cf39e5b8c8453a1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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