Answer in brief
CVE-2026-31775 records a Unknown severity vulnerability in ALSA: ctxfi: Don't enumerate SPDIF1 at DAIO initialization. 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 | >=a2dbaeb5c61ef110ceefe0d48fe94d428d3bcf16 <a79c4c42057818bd9de45d2627464b4f0e02196a || >=a2dbaeb5c61ef110ceefe0d48fe94d428d3bcf16 <75dc1980cf48826287e43dc7a49e310c6691f97e || 88cc09bb70651917ef8b7095a05a21a9ca014c94 || >=6.18.57 <6.19 | a79c4c42057818bd9de45d2627464b4f0e02196a, 75dc1980cf48826287e43dc7a49e310c6691f97e, 6.19 |
| Linux/Linuxgeneric | 6.19 | Not reported |
Published upstream
May 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: ALSA: ctxfi: Don't enumerate SPDIF1 at DAIO initialization The recent refactoring of xfi driver changed the assignment of atc->daios[] at atc_get_resources(); now it loops over all enum DAIOTYP entries while it looped formerly only a part of them. The problem is that the last entry, SPDIF1, is a special type that is used only for hw20k1 CTSB073X model (as a replacement of SPDIFIO), and there is no corresponding definition for hw20k2. Due to the lack of the info, it caused a kernel crash on hw20k2, which was already worked around by the commit b045ab3dff97 ("ALSA: ctxfi: Fix missing SPDIFI1 index handling"). This patch addresses the root cause of the regression above properly, simply by skipping the incorrect SPDIF1 type in the parser loop. For making the change clearer, the code is slightly arranged, too.
Quoted source text, attributed separately from HOL analysis.