Answer in brief
CVE-2025-38586 records a Unknown severity vulnerability in bpf, arm64: Fix fp initialization for exception boundary. 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 | >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <0dbef493cae7d451f740558665893c000adb2321 || >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <e23184725dbb72d5d02940222eee36dbba2aa422 || >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <1ce30231e0a2c8c361ee5f8f7f265fc17130adce || >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <b114fcee766d5101eada1aca7bb5fd0a86c89b35 | 0dbef493cae7d451f740558665893c000adb2321, e23184725dbb72d5d02940222eee36dbba2aa422, 1ce30231e0a2c8c361ee5f8f7f265fc17130adce, b114fcee766d5101eada1aca7bb5fd0a86c89b35 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Aug 19, 2025
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: bpf, arm64: Fix fp initialization for exception boundary In the ARM64 BPF JIT when prog->aux->exception_boundary is set for a BPF program, find_used_callee_regs() is not called because for a program acting as exception boundary, all callee saved registers are saved. find_used_callee_regs() sets `ctx->fp_used = true;` when it sees FP being used in any of the instructions. For programs acting as exception boundary, ctx->fp_used remains false even if frame pointer is used by the program and therefore, FP is not set-up for such programs in the prologue. This can cause the kernel to crash due to a pagefault. Fix it by setting ctx->fp_used = true for exception boundary programs as fp is always saved in such programs.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-38586 records a Unknown severity vulnerability in bpf, arm64: Fix fp initialization for exception boundary. 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 | >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <0dbef493cae7d451f740558665893c000adb2321 || >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <e23184725dbb72d5d02940222eee36dbba2aa422 || >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <1ce30231e0a2c8c361ee5f8f7f265fc17130adce || >=5d4fa9ec5643a5c75d3c1e6abf50fb9284caf1ff <b114fcee766d5101eada1aca7bb5fd0a86c89b35 | 0dbef493cae7d451f740558665893c000adb2321, e23184725dbb72d5d02940222eee36dbba2aa422, 1ce30231e0a2c8c361ee5f8f7f265fc17130adce, b114fcee766d5101eada1aca7bb5fd0a86c89b35 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Aug 19, 2025
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: bpf, arm64: Fix fp initialization for exception boundary In the ARM64 BPF JIT when prog->aux->exception_boundary is set for a BPF program, find_used_callee_regs() is not called because for a program acting as exception boundary, all callee saved registers are saved. find_used_callee_regs() sets `ctx->fp_used = true;` when it sees FP being used in any of the instructions. For programs acting as exception boundary, ctx->fp_used remains false even if frame pointer is used by the program and therefore, FP is not set-up for such programs in the prologue. This can cause the kernel to crash due to a pagefault. Fix it by setting ctx->fp_used = true for exception boundary programs as fp is always saved in such programs.
Quoted source text, attributed separately from HOL analysis.