Answer in brief
CVE-2026-80708 records a Unknown severity vulnerability in s390/zcrypt: Fix missing mem scrub at clear key import in cca_clr2cipherkey(). 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 | >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <8e1c0def77b7450be0ed607ed0d7bae629d30020 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <be7ae07fb745d1cf575b03a178a055b0a2859364 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <4e26d0d72bfdec311f12acfa0c6b7fbeb6a343d3 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <7dd6e556dbfc91d3d511cfd1015d2dad42608010 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <b453003ae6a869f5bdf025b5519cbb38295ae4f1 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <fbb0410986e8ad214121e51a4a28c3d0a10b7644 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <ebfbb9ac7adbb1e3556100b54a27e8a9b102feac || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <01476391aecef36a3b789ee844357b22fbc90665 | 8e1c0def77b7450be0ed607ed0d7bae629d30020, be7ae07fb745d1cf575b03a178a055b0a2859364, 4e26d0d72bfdec311f12acfa0c6b7fbeb6a343d3, 7dd6e556dbfc91d3d511cfd1015d2dad42608010, b453003ae6a869f5bdf025b5519cbb38295ae4f1, fbb0410986e8ad214121e51a4a28c3d0a10b7644, ebfbb9ac7adbb1e3556100b54a27e8a9b102feac, 01476391aecef36a3b789ee844357b22fbc90665 |
| Linux/Linuxgeneric | 5.4 | Not reported |
Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 28, 2026
In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix missing mem scrub at clear key import in cca_clr2cipherkey() The helper function _ip_cprb_helper() uses internal buffer memory for building and processing CPRBs. After use this buffer was never scrubbed which could lead to leaving for example clear key material in memory which could be exposed via tricky reuse of this same memory. Extend the _ip_cprb_helper() function with another parameter 'scrub' used to steer scrubbing of this buffer. So now the caller has the opportunity to decide if scrubbing is needed or not. Extend the clear key to secure key token import process in function cca_clr2cipherkey() to tell the helper function from above to scrub the cprb buffer when the clear key value is part of the request data. Add explicit scrubbing on return from function cca_clr2cipherkey() for the random EXOR buffer and the cprb buffer. Overall this cleans the internal used buffer in case of clear key import to prevent sensitive data to get exposed.
Quoted source text, attributed separately from HOL analysis.