Integer Overflow or Wraparound Affecting wayland-devel package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-CENTOS7-WAYLANDDEVEL-3010492
  • published30 Aug 2022
  • disclosed30 Jul 2022

Introduced: 30 Jul 2022

CVE-2021-3782  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-911  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Centos:7 wayland-devel.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wayland-devel package and not the wayland-devel package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

An internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.

CVSS Scores

version 3.1