CVE-2026-64524
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
drm/hyperv: validate resolution_count and fix WIN8 fallback
In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: validate resolution_count and fix WIN8 fallback A SYNTHVID_RESOLUTION_RESPONSE with resolution_count > 64 walks past the supported_resolution[SYNTHVID_MAX_RESOLUTION_COUNT] array in the parse loop. Bound resolution_count against the array size, folded into the existing zero-check. When the WIN10 resolution probe fails, the caller in hyperv_connect_vsp() left hv->screen_*_max / preferred_* unpopulated, which sets mode_config.max_width / max_height to 0 and makes drm_internal_framebuffer_create() reject every userspace framebuffer with -EINVAL. The pre-WIN10 branch had the same gap for preferred_width / preferred_height. Use a single post-probe fallback guarded by screen_width_max == 0 so both paths converge on the WIN8 defaults.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 76c56a5affeba1e163b66b9d8cc192e6154466f0 | affected | git | 96f7de3172d4aa878b7f87173b2b3507c350fcd6 | Unavailable | None listed |
| 76c56a5affeba1e163b66b9d8cc192e6154466f0 | affected | git | bc573752f3dac0d1ab8df7078c1851bc76717653 | Unavailable | None listed |
| 76c56a5affeba1e163b66b9d8cc192e6154466f0 | affected | git | 1fb565b77b8f44afabb02de6310065f109d89e94 | Unavailable | None listed |
| 76c56a5affeba1e163b66b9d8cc192e6154466f0 | affected | git | a321c908f2eeea01539668eb270d074d9b88e490 | Unavailable | None listed |
| 76c56a5affeba1e163b66b9d8cc192e6154466f0 | affected | git | 9c698b2c43c2667c34f5336bf46ad5786216ac2a | Unavailable | None listed |
| 76c56a5affeba1e163b66b9d8cc192e6154466f0 | affected | git | 8a114b25b5521eae451b13bce98ae978624962e5 | Unavailable | None listed |
| 76c56a5affeba1e163b66b9d8cc192e6154466f0 | affected | git | 13d33b9ef67066c77c84273fac5a1d3fde3533d1 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.14 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.14 | Unavailable | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |