CVE-2022-48771 (GCVE-0-2022-48771)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2025-05-04 08:22
VLAI?
Title
drm/vmwgfx: Fix stale file descriptors on failed usercopy
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix stale file descriptors on failed usercopy A failing usercopy of the fence_rep object will lead to a stale entry in the file descriptor table as put_unused_fd() won't release it. This enables userland to refer to a dangling 'file' object through that still valid file descriptor, leading to all kinds of use-after-free exploitation scenarios. Fix this by deferring the call to fd_install() until after the usercopy has succeeded.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c906965dee22d5e95d0651759ba107b420212a9f , < e8d092a62449dcfc73517ca43963d2b8f44d0516 (git)
Affected: c906965dee22d5e95d0651759ba107b420212a9f , < 0008a0c78fc33a84e2212a7c04e6b21a36ca6f4d (git)
Affected: c906965dee22d5e95d0651759ba107b420212a9f , < 84b1259fe36ae0915f3d6ddcea6377779de48b82 (git)
Affected: c906965dee22d5e95d0651759ba107b420212a9f , < ae2b20f27732fe92055d9e7b350abc5cdf3e2414 (git)
Affected: c906965dee22d5e95d0651759ba107b420212a9f , < 6066977961fc6f437bc064f628cf9b0e4571c56c (git)
Affected: c906965dee22d5e95d0651759ba107b420212a9f , < 1d833b27fb708d6fdf5de9f6b3a8be4bd4321565 (git)
Affected: c906965dee22d5e95d0651759ba107b420212a9f , < a0f90c8815706981c483a652a6aefca51a5e191c (git)
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    Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 4.14.264 , ≤ 4.14.* (semver)
Unaffected: 4.19.227 , ≤ 4.19.* (semver)
Unaffected: 5.4.175 , ≤ 5.4.* (semver)
Unaffected: 5.10.95 , ≤ 5.10.* (semver)
Unaffected: 5.15.18 , ≤ 5.15.* (semver)
Unaffected: 5.16.4 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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