CVE-2026-97955

CVE CVE-2026-97955EUVD EUVD-2026-86809Published 2026-09-25T10:23:01.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net: mana: restore the XDP program pointer when pre-allocation fails mana_xdp_set() publishes the new program into apc->bpf_prog before it allocates anything, because mana_pre_alloc_rxbufs() sizes the buffers from it via mana_get_rxbuf_cfg(). When that allocation fails the function returns the error directly, skipping the err_dealloc_rxbuffs label which is the only place that restores the previous pointer. The attach is reported as failed, so the BPF core drops the reference it held for the caller and the program can be freed, while apc->bpf_prog still points at it. The next consumer of mana_xdp_get() - typically mana_chn_setxdp() from mana_alloc_queues() on the following ifup, or after a TX timeout reset - then calls bpf_prog_add() on freed memory. This is reachable from an ordinary "ip link set dev ethX xdp obj ..." whenever the per-queue RX buffer pre-allocation cannot be satisfied. Restore the previous program on that error path.

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 patch: 0; patch: 6.18.53; 730ff06d3f5cc2ce0348414b78c10528b767d4a3 <9801edfba8dfcdb1da3b0afccdf143e13d646b56; 730ff06d3f5cc2ce0348414b78c10528b767d4a3 <5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8; 730ff06d3f5cc2ce0348414b78c10528b767d4a3 <4c46beb807efcc93f5899ebe1f5958248eb296c6; patch: 7.2.7; 6.18; patch: 7.3-rc3

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

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.