{"id":"CVE-2026-63849","summary":"drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 enc ring","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 enc ring\n\nVCN encoder and decoder rings do not support 64-bit user fence writes,\nreject CS submissions with user fences.\n\n(cherry picked from commit e16be95a2c3ee712b142cb27d2dca0b461181359)","modified":"2026-07-22T05:29:48.710338180Z","published":"2026-07-19T14:04:41.395Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63849.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/081ef0e46c9cdd26c0db0ef721470393d36b6655"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a4bffd67e94944ed3db26a959346cfb7fabaecd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8f4954722eab88e10c4ea0c0d3b1269c31421d3a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63849.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63849"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"346492f30ce3581bf5324c4ae417eab8537dc998"},{"fixed":"081ef0e46c9cdd26c0db0ef721470393d36b6655"},{"fixed":"5a4bffd67e94944ed3db26a959346cfb7fabaecd"},{"fixed":"8f4954722eab88e10c4ea0c0d3b1269c31421d3a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63849.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.14.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63849.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}