Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: drop dma_buf reference on foreign-fd prime import ttm_prime_fd_to_handle() returns -ENOSYS when the imported fd's dma_buf->ops do not match the ttm_object_device's ops, but does so without releasing the reference acquired by dma_buf_get(). Any unprivileged renderD client passing a non-vmwgfx prime fd through the DRM_VMW_GB_SURFACE_REF{,_EXT} path leaks one dma_buf reference per call and indefinitely pins the foreign exporter's GEM resources. Funnel the error path through the existing dma_buf_put() so the reference is always dropped.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 65981f7681abdf92b25942222b629b9c512d0705 before 1715901e7052cf90fbf04c8303e563a47e021278; affected 65981f7681abdf92b25942222b629b9c512d0705 before c4fd91ee7228f56fbb4cf528757dc17ffefeb0ee; affected 65981f7681abdf92b25942222b629b9c512d0705 before 619c3cfa88e09603a13d918f754808db2dda7057; affected 65981f7681abdf92b25942222b629b9c512d0705 before c1c22fca0a0896a452a7cb92422d67babd65b4be; affected 65981f7681abdf92b25942222b629b9c512d0705 before a1e972fa94c3a8069e022c67b9d97c7aa7b05293; affected 65981f7681abdf92b25942222b629b9c512d0705 before a8434b145b1e467940334c58c00af241e9494c5f; affected 65981f7681abdf92b25942222b629b9c512d0705 before 4df39eb99bb47d1f24d1952c23b21b10988356bf; affected 65981f7681abdf92b25942222b629b9c512d0705 before f739416dc555fa205a785e5135d73fa39b26f35d |
| Linux / Linux | affected 3.13; unaffected 0 before 3.13; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.151 through 6.6.*; unaffected 6.12.103 through 6.12.*; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1715901e7052cf90fbf04c8303e563a47e021278
- https://git.kernel.org/stable/c/c4fd91ee7228f56fbb4cf528757dc17ffefeb0ee
- https://git.kernel.org/stable/c/619c3cfa88e09603a13d918f754808db2dda7057
- https://git.kernel.org/stable/c/c1c22fca0a0896a452a7cb92422d67babd65b4be
- https://git.kernel.org/stable/c/a1e972fa94c3a8069e022c67b9d97c7aa7b05293
- https://git.kernel.org/stable/c/a8434b145b1e467940334c58c00af241e9494c5f
- https://git.kernel.org/stable/c/4df39eb99bb47d1f24d1952c23b21b10988356bf
- https://git.kernel.org/stable/c/f739416dc555fa205a785e5135d73fa39b26f35d