Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 76c56a5affeba1e163b66b9d8cc192e6154466f0 before 96f7de3172d4aa878b7f87173b2b3507c350fcd6; affected 76c56a5affeba1e163b66b9d8cc192e6154466f0 before bc573752f3dac0d1ab8df7078c1851bc76717653; affected 76c56a5affeba1e163b66b9d8cc192e6154466f0 before 1fb565b77b8f44afabb02de6310065f109d89e94; affected 76c56a5affeba1e163b66b9d8cc192e6154466f0 before a321c908f2eeea01539668eb270d074d9b88e490; affected 76c56a5affeba1e163b66b9d8cc192e6154466f0 before 9c698b2c43c2667c34f5336bf46ad5786216ac2a; affected 76c56a5affeba1e163b66b9d8cc192e6154466f0 before 8a114b25b5521eae451b13bce98ae978624962e5; affected 76c56a5affeba1e163b66b9d8cc192e6154466f0 before 13d33b9ef67066c77c84273fac5a1d3fde3533d1 |
| Linux / Linux | affected 5.14; unaffected 0 before 5.14; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/96f7de3172d4aa878b7f87173b2b3507c350fcd6
- https://git.kernel.org/stable/c/bc573752f3dac0d1ab8df7078c1851bc76717653
- https://git.kernel.org/stable/c/1fb565b77b8f44afabb02de6310065f109d89e94
- https://git.kernel.org/stable/c/a321c908f2eeea01539668eb270d074d9b88e490
- https://git.kernel.org/stable/c/9c698b2c43c2667c34f5336bf46ad5786216ac2a
- https://git.kernel.org/stable/c/8a114b25b5521eae451b13bce98ae978624962e5
- https://git.kernel.org/stable/c/13d33b9ef67066c77c84273fac5a1d3fde3533d1
ADP enrichment
No English description supplied.
No references supplied.