Answer in brief
CVE-2023-53205 records a High severity (CVSS 7.3) vulnerability in KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler. 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.
CVSS is 7.3. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=87e28a15c42cc592009c32a8c20e5789059027c2 <a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5 || >=87e28a15c42cc592009c32a8c20e5789059027c2 <86bfb18bad60fc468e5f112cbbd918462a8dd435 || >=87e28a15c42cc592009c32a8c20e5789059027c2 <dc7e0192c470a53d847c79a2796f9ac429477a26 || >=87e28a15c42cc592009c32a8c20e5789059027c2 <0bc380beb78aa352eadbc21d934dd9606fcee808 | a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5, 86bfb18bad60fc468e5f112cbbd918462a8dd435, dc7e0192c470a53d847c79a2796f9ac429477a26, 0bc380beb78aa352eadbc21d934dd9606fcee808 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler We do check for target CPU == -1, but this might change at the time we are going to use it. Hold the physical target CPU in a local variable to avoid out-of-bound accesses to the cpu arrays.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-53205 records a High severity (CVSS 7.3) vulnerability in KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler. 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.
CVSS is 7.3. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=87e28a15c42cc592009c32a8c20e5789059027c2 <a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5 || >=87e28a15c42cc592009c32a8c20e5789059027c2 <86bfb18bad60fc468e5f112cbbd918462a8dd435 || >=87e28a15c42cc592009c32a8c20e5789059027c2 <dc7e0192c470a53d847c79a2796f9ac429477a26 || >=87e28a15c42cc592009c32a8c20e5789059027c2 <0bc380beb78aa352eadbc21d934dd9606fcee808 | a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5, 86bfb18bad60fc468e5f112cbbd918462a8dd435, dc7e0192c470a53d847c79a2796f9ac429477a26, 0bc380beb78aa352eadbc21d934dd9606fcee808 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler We do check for target CPU == -1, but this might change at the time we are going to use it. Hold the physical target CPU in a local variable to avoid out-of-bound accesses to the cpu arrays.
Quoted source text, attributed separately from HOL analysis.