wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers (CVE-2026-93807) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93807

wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers

Answer in brief

CVE-2026-93807 records a Unknown severity vulnerability in wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers. The current sources do not mark it as known exploited. The current feed maps 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.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5902e3c08c63d65724772f74d65b9fb032625dca \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <55b86ef6c2e68879ffd95203b011ef42a013ab88 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <843fe9bc583b7686ca68312ac9319c9240a73c03 \|\| >=0 <6.12.111 \|\| >=0 <6.18.53	5902e3c08c63d65724772f74d65b9fb032625dca, 55b86ef6c2e68879ffd95203b011ef42a013ab88, 843fe9bc583b7686ca68312ac9319c9240a73c03, 6.12.111, 6.18.53

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to 5902e3c08c63d65724772f74d65b9fb032625dca if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers rsi_hal_load_key() copies tx_mic_key and rx_mic_key from data[16] and data[24] whenever key data is present. Those offsets are only part of the 32-byte TKIP key layout. Shorter keys used by other ciphers, such as CCMP, do not provide those bytes, so the unconditional copies can read past the supplied key buffer. Only copy the MIC keys for TKIP, and reject malformed TKIP keys that are shorter than the expected 32-byte layout. [drop useless length check]

Quoted source text, attributed separately from HOL analysis.