bpf, x86: Fix trampoline stack size for 128-bit arguments (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
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.
References
- https://git.kernel.org/stable/c/2189232984b45ac8281c80484ab9f67b380a2ca1
- https://git.kernel.org/stable/c/7f96bf0d24b2acc0732906b60a10f06783f2470d
- https://git.kernel.org/stable/c/4aed2346fa9b88d458eeb8c01123f3c07585a675
- https://git.kernel.org/stable/c/40f3bfbbb222b92278f3797614b70f68d46824ac
- https://git.kernel.org/stable/c/a6d7d7a253c550e74b0651897fe313c2f9b2301f
- https://git.kernel.org/stable/c/814cba835ef648e0c5eb79505c96c0493b29eea6
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-82019
- GCVE · GCVE-0-2026-90358
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 < 2189232984b45ac8281c80484ab9f67b380a2ca1 ; affected a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 < 7f96bf0d24b2acc0732906b60a10f06783f2470d ; affected a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 < 4aed2346fa9b88d458eeb8c01123f3c07585a675 ; affected a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 < 40f3bfbbb222b92278f3797614b70f68d46824ac ; affected a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 < a6d7d7a253c550e74b0651897fe313c2f9b2301f ; affected a9c5ad31fbdc4dec6d266fe22e51de1ad6d1bcf2 < 814cba835ef648e0c5eb79505c96c0493b29eea6 |
| Linux · Linux | affected 6.1 ; unaffected 0 < 6.1 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.110 ≤ 6.12.* ; unaffected 6.18.52 ≤ 6.18.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |