s390/crypto: Fix missing scrub of temp buffers with PAES algorithm (CVE-2026-97590) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97590

s390/crypto: Fix missing scrub of temp buffers with PAES algorithm

Answer in brief

CVE-2026-97590 records a Unknown severity vulnerability in s390/crypto: Fix missing scrub of temp buffers with PAES algorithm. 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.

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

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <7d1456d54b3c784cc2917c219a528092cefe30cd \|\| >=6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <d7159d2132e9aa51af7acb51c6742d9b30f987b3 \|\| >=6cd87cb5ef6ca50ae17c371482ceaab1d635e232 <19a218b46b2471d370c11fb52040f36ac8d05d23	7d1456d54b3c784cc2917c219a528092cefe30cd, d7159d2132e9aa51af7acb51c6742d9b30f987b3, 19a218b46b2471d370c11fb52040f36ac8d05d23
Linux/Linuxgeneric	6.16	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 7d1456d54b3c784cc2917c219a528092cefe30cd if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 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: s390/crypto: Fix missing scrub of temp buffers with PAES algorithm In function ctr_paes_do_crypt() there is a buffer used to process remaining bytes < AES_BLOCK_SIZE. This buffer was not scrubbed and thus could lead to expose of unwanted data. Rework the code to explicitly scrub the buffer at the end of the function to avoid exposure of maybe sensitive data. In function __xts_2keys_prep_param() change the existing scrub to clean the whole param block instead of just the key field.

Quoted source text, attributed separately from HOL analysis.