drm/sun4i: dsi: Prevent underflow when computing packet sizes (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.19 % · percentile 9 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: dsi: Prevent underflow when computing packet sizes Currently, the packet overhead is subtracted using unsigned arithmetic. With a short sync pulse, this could underflow and wrap around to near the maximal u16 value. Fix this by using signed subtraction. The call to max() will correctly handle any negative numbers that are produced. Apply the same fix to the other timings, even though those subtractions are less likely to underflow.
Weaknesses (CWE)
- CWE-191 — Integer Underflow (Wrap or Wraparound)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2022-55307
- GCVE · GCVE-0-2022-50036
CERT-FR advisories
- CERTFR-2026-AVI-0081 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1009 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0649 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0607 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0587 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.18 < 5.10.138cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.63cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.19.4cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 133add5b5ad42b7bb5fcd59d681aef6475d08600 < a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26 ; affected 133add5b5ad42b7bb5fcd59d681aef6475d08600 < 98e28de472ef248352f04f87e29e634ebb0ec240 ; affected 133add5b5ad42b7bb5fcd59d681aef6475d08600 < fb837f5b83461624e525727a8f4add14b201147e ; affected 133add5b5ad42b7bb5fcd59d681aef6475d08600 < 82a1356a933d8443139f8886f11b63c974a09a67 |
| Linux · Linux | affected 4.18 ; unaffected 0 < 4.18 ; unaffected 5.10.138 ≤ 5.10.* ; unaffected 5.15.63 ≤ 5.15.* ; unaffected 5.19.4 ≤ 5.19.* ; unaffected 6.0 ≤ * |
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 |