Answer in brief
CVE-2026-97955 records a Unknown severity vulnerability in net: mana: restore the XDP program pointer when pre-allocation fails. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=730ff06d3f5cc2ce0348414b78c10528b767d4a3 <5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8 || >=730ff06d3f5cc2ce0348414b78c10528b767d4a3 <9801edfba8dfcdb1da3b0afccdf143e13d646b56 || >=730ff06d3f5cc2ce0348414b78c10528b767d4a3 <4c46beb807efcc93f5899ebe1f5958248eb296c6 | 5b3cdc9abd82b7e49e0f1a21d6eb75466c5ecef8, 9801edfba8dfcdb1da3b0afccdf143e13d646b56, 4c46beb807efcc93f5899ebe1f5958248eb296c6 |
| Linux/Linuxgeneric | 6.18 | Not reported |
Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.