{"id":"CVE-2022-48771","state":"PUBLISHED","title":"drm/vmwgfx: Fix stale file descriptors on failed usercopy","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Fix stale file descriptors on failed usercopy\n\nA failing usercopy of the fence_rep object will lead to a stale entry in\nthe file descriptor table as put_unused_fd() won't release it. This\nenables userland to refer to a dangling 'file' object through that still\nvalid file descriptor, leading to all kinds of use-after-free\nexploitation scenarios.\n\nFix this by deferring the call to fd_install() until after the usercopy\nhas succeeded.","publishedAt":"2024-06-20T11:13:45.896Z","updatedAt":"2026-08-05T08:52:12.077Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c906965dee22d5e95d0651759ba107b420212a9f","status":"affected","lessThan":"e8d092a62449dcfc73517ca43963d2b8f44d0516","versionType":"git"},{"version":"c906965dee22d5e95d0651759ba107b420212a9f","status":"affected","lessThan":"0008a0c78fc33a84e2212a7c04e6b21a36ca6f4d","versionType":"git"},{"version":"c906965dee22d5e95d0651759ba107b420212a9f","status":"affected","lessThan":"84b1259fe36ae0915f3d6ddcea6377779de48b82","versionType":"git"},{"version":"c906965dee22d5e95d0651759ba107b420212a9f","status":"affected","lessThan":"ae2b20f27732fe92055d9e7b350abc5cdf3e2414","versionType":"git"},{"version":"c906965dee22d5e95d0651759ba107b420212a9f","status":"affected","lessThan":"6066977961fc6f437bc064f628cf9b0e4571c56c","versionType":"git"},{"version":"c906965dee22d5e95d0651759ba107b420212a9f","status":"affected","lessThan":"1d833b27fb708d6fdf5de9f6b3a8be4bd4321565","versionType":"git"},{"version":"c906965dee22d5e95d0651759ba107b420212a9f","status":"affected","lessThan":"a0f90c8815706981c483a652a6aefca51a5e191c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_drv.h","drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c","drivers/gpu/drm/vmwgfx/vmwgfx_fence.c","drivers/gpu/drm/vmwgfx/vmwgfx_kms.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","versionType":"semver"},{"version":"4.14.264","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.227","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.175","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.95","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.18","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.4","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_drv.h","drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c","drivers/gpu/drm/vmwgfx/vmwgfx_fence.c","drivers/gpu/drm/vmwgfx/vmwgfx_kms.c"]}],"references":["https://git.kernel.org/stable/c/e8d092a62449dcfc73517ca43963d2b8f44d0516","https://git.kernel.org/stable/c/0008a0c78fc33a84e2212a7c04e6b21a36ca6f4d","https://git.kernel.org/stable/c/84b1259fe36ae0915f3d6ddcea6377779de48b82","https://git.kernel.org/stable/c/ae2b20f27732fe92055d9e7b350abc5cdf3e2414","https://git.kernel.org/stable/c/6066977961fc6f437bc064f628cf9b0e4571c56c","https://git.kernel.org/stable/c/1d833b27fb708d6fdf5de9f6b3a8be4bd4321565","https://git.kernel.org/stable/c/a0f90c8815706981c483a652a6aefca51a5e191c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/48xxx/CVE-2022-48771.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48771","state":"PUBLISHED","datePublished":"2024-06-20T11:13:45.896Z","dateUpdated":"2026-08-05T08:52:12.077Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-06-20T11:09:39.061Z"},"containers":{"cna":{"title":"drm/vmwgfx: Fix stale file descriptors on failed usercopy","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Fix stale file descriptors on failed usercopy\n\nA failing usercopy of the fence_rep object will lead to a stale entry in\nthe file descriptor table as put_unused_fd() won't release it. 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