Answer in brief
CVE-2026-90358 records a High severity (CVSS 7.8) vulnerability in bpf, x86: Fix trampoline stack size for 128-bit arguments. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), 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 7.8. 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), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <4aed2346fa9b88d458eeb8c01123f3c07585a675 || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <40f3bfbbb222b92278f3797614b70f68d46824ac || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <a6d7d7a253c550e74b0651897fe313c2f9b2301f || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <814cba835ef648e0c5eb79505c96c0493b29eea6 | 4aed2346fa9b88d458eeb8c01123f3c07585a675, 40f3bfbbb222b92278f3797614b70f68d46824ac, a6d7d7a253c550e74b0651897fe313c2f9b2301f, 814cba835ef648e0c5eb79505c96c0493b29eea6 |
| Linux/Linuxgeneric | 6.1 | Not reported |
| Linux/Linuxgeneric | >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <7f96bf0d24b2acc0732906b60a10f06783f2470d || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <4aed2346fa9b88d458eeb8c01123f3c07585a675 || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <40f3bfbbb222b92278f3797614b70f68d46824ac || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <a6d7d7a253c550e74b0651897fe313c2f9b2301f || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <814cba835ef648e0c5eb79505c96c0493b29eea6 | 7f96bf0d24b2acc0732906b60a10f06783f2470d, 4aed2346fa9b88d458eeb8c01123f3c07585a675, 40f3bfbbb222b92278f3797614b70f68d46824ac, a6d7d7a253c550e74b0651897fe313c2f9b2301f, 814cba835ef648e0c5eb79505c96c0493b29eea6 |
| Linux/Linuxgeneric | >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <2189232984b45ac8281c80484ab9f67b380a2ca1 || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <7f96bf0d24b2acc0732906b60a10f06783f2470d || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <4aed2346fa9b88d458eeb8c01123f3c07585a675 || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <40f3bfbbb222b92278f3797614b70f68d46824ac || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <a6d7d7a253c550e74b0651897fe313c2f9b2301f || >=a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 <814cba835ef648e0c5eb79505c96c0493b29eea6 | 2189232984b45ac8281c80484ab9f67b380a2ca1, 7f96bf0d24b2acc0732906b60a10f06783f2470d, 4aed2346fa9b88d458eeb8c01123f3c07585a675, 40f3bfbbb222b92278f3797614b70f68d46824ac, a6d7d7a253c550e74b0651897fe313c2f9b2301f, 814cba835ef648e0c5eb79505c96c0493b29eea6 |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: bpf, x86: Fix trampoline stack size for 128-bit arguments btf_distill_func_proto() accepts a function argument up to 16 bytes, so a 128-bit scalar such as __int128 reaches the x86 trampoline with arg_size == 16. But the current implementation assumes an __int128 argument only needs one register, so the register save area is under-allocated and save_args() overwrites adjacent stack slots. Compute the register count from arg_size for all arguments to fix it.
Quoted source text, attributed separately from HOL analysis.