Answer in brief
CVE-2026-64520 records a Unknown severity vulnerability in firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies. 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 | >=ba85c644ac8dc37d9b01a3332c2f142cb4d46954 <f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95 || >=ba85c644ac8dc37d9b01a3332c2f142cb4d46954 <79d95c02ae0a95e6e80e8e92b7ca74ecee02854f || >=ba85c644ac8dc37d9b01a3332c2f142cb4d46954 <3974ea1938406f9bfa7c1f48d4e43533f447bb08 | f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95, 79d95c02ae0a95e6e80e8e92b7ca74ecee02854f, 3974ea1938406f9bfa7c1f48d4e43533f447bb08 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies The register-based PARTITION_INFO_GET path trusted the firmware-provided indices when copying partition descriptors into the caller buffer. Reject inconsistent counts or index progressions so the copy loop cannot write past the allocated array. (fixed cur_idx when exactly one descriptor in the first fragment)
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64520 records a Unknown severity vulnerability in firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies. 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 | >=ba85c644ac8dc37d9b01a3332c2f142cb4d46954 <f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95 || >=ba85c644ac8dc37d9b01a3332c2f142cb4d46954 <79d95c02ae0a95e6e80e8e92b7ca74ecee02854f || >=ba85c644ac8dc37d9b01a3332c2f142cb4d46954 <3974ea1938406f9bfa7c1f48d4e43533f447bb08 | f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95, 79d95c02ae0a95e6e80e8e92b7ca74ecee02854f, 3974ea1938406f9bfa7c1f48d4e43533f447bb08 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies The register-based PARTITION_INFO_GET path trusted the firmware-provided indices when copying partition descriptors into the caller buffer. Reject inconsistent counts or index progressions so the copy loop cannot write past the allocated array. (fixed cur_idx when exactly one descriptor in the first fragment)
Quoted source text, attributed separately from HOL analysis.