{"id":"CVE-2026-53190","title":"drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()\n\ndma_fence_unwrap_for_each() internally calls dma_fence_unwrap_first()\nwhich does cursor…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= eba57fb5498f2858768321e64570caea188455b8 < 898bd0ccfed71651b881660c5d20ad73b5203174","Linux >= eba57fb5498f2858768321e64570caea188455b8 < 73524e9f96a278b521f257a78a845c49eb522bc1","Linux >= eba57fb5498f2858768321e64570caea188455b8 < 8348567a6afb24e2c9cafe8a321162d0eebe1411","Linux >= eba57fb5498f2858768321e64570caea188455b8 < c0fffc874c264292e769f26194a2a5e66ce31810","Linux >= eba57fb5498f2858768321e64570caea188455b8 < 3f26bb732cc136ab20176697c92f32c9c84cb125","Linux 6.5"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:21:56.401289Z"},"published":"2026-06-25","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:24:06.568Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53190","references":[{"url":"https://git.kernel.org/stable/c/898bd0ccfed71651b881660c5d20ad73b5203174"},{"url":"https://git.kernel.org/stable/c/73524e9f96a278b521f257a78a845c49eb522bc1"},{"url":"https://git.kernel.org/stable/c/8348567a6afb24e2c9cafe8a321162d0eebe1411"},{"url":"https://git.kernel.org/stable/c/c0fffc874c264292e769f26194a2a5e66ce31810"},{"url":"https://git.kernel.org/stable/c/3f26bb732cc136ab20176697c92f32c9c84cb125"}],"tags":["cve.org"],"epss":0.00122,"epssPercentile":0.01989,"ingestedAt":"2026-11-06T16:57:43.272Z","slug":"CVE-2026-53190","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()\n\ndma_fence_unwrap_for_each() internally calls dma_fence_unwrap_first()\nwhich does cursor->chain = dma_fence_get(head), taking an extra\nreference. On normal loop completion, dma_fence_unwrap_next()\nreleases this via dma_fence_chain_walk() -> dma_fence_put().\n\nWhen virtio_gpu_do_fence_wait() fails and the function returns early\nfrom inside the loop, the cursor->chain reference is never released.\nThis is the only caller in the entire kernel that does an early return\ninside dma_fence_unwrap_for_each.\n\nAdd dma_fence_put(itr.chain) before the early return.\n\n## Affected\n\n- `Linux >= eba57fb5498f2858768321e64570caea188455b8 < 898bd0ccfed71651b881660c5d20ad73b5203174`\n- `Linux >= eba57fb5498f2858768321e64570caea188455b8 < 73524e9f96a278b521f257a78a845c49eb522bc1`\n- `Linux >= eba57fb5498f2858768321e64570caea188455b8 < 8348567a6afb24e2c9cafe8a321162d0eebe1411`\n- `Linux >= eba57fb5498f2858768321e64570caea188455b8 < c0fffc874c264292e769f26194a2a5e66ce31810`\n- `Linux >= eba57fb5498f2858768321e64570caea188455b8 < 3f26bb732cc136ab20176697c92f32c9c84cb125`\n- `Linux 6.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}