7.8

CVE-2022-48771: drm/vmwgfx: Fix stale file descriptors on failed usercopy

Modified
AliasesUBUNTU-CVE-2022-48771DEBIAN-CVE-2022-48771
Published 20-06-2024Last modified 05-08-2026

Vulnerability summary

CVE-2022-48771 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 11
RHSA-2022:1988SUSE-SU-2024:2360-1SUSE-SU-2024:2362-1SUSE-SU-2024:2365-1SUSE-SU-2024:2372-1SUSE-SU-2024:2381-1

Timeline

  1. 20-06-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu106 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c906965dee22d5e95d0651759ba107b420212a9f, < e8d092a62449dcfc73517ca43963d2b8f44d0516 | ≥ c906965dee22d5e95d0651759ba107b420212a9f, < 0008a0c78fc33a84e2212a7c04e6b21a36ca6f4d | ≥ c906965dee22d5e95d0651759ba107b420212a9f, < 84b1259fe36ae0915f3d6ddcea6377779de48b82 | ≥ c906965dee22d5e95d0651759ba107b420212a9f, < ae2b20f27732fe92055d9e7b350abc5cdf3e2414 | ≥ c906965dee22d5e95d0651759ba107b420212a9f, < 6066977961fc6f437bc064f628cf9b0e4571c56c | ≥ c906965dee22d5e95d0651759ba107b420212a9f, < 1d833b27fb708d6fdf5de9f6b3a8be4bd4321565 | ≥ c906965dee22d5e95d0651759ba107b420212a9f, < a0f90c8815706981c483a652a6aefca51a5e191c | 4.14
  • linux_kernel≥ 4.14, < 4.14.264 | ≥ 4.15, < 4.19.227 | ≥ 4.20, < 5.4.175 | ≥ 5.5, < 5.10.95 | ≥ 5.11, < 5.15.18 | ≥ 5.16, < 5.16.4 | 5.17:rc1
Debian1 product
  • linux< 5.16.7-1

3 vendors · 109 products

References

11 links
Show all 11 references