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.
References
Link | Resource |
---|---|
https://gitlab.freedesktop.org/wayland/wayland/-/issues/224 | Exploit Issue Tracking Patch Third Party Advisory |
Configurations
History
26 Jun 2023, 17:47
Type | Values Removed | Values Added |
---|---|---|
CWE | CWE-190 |
01 Jun 2023, 17:57
Type | Values Removed | Values Added |
---|---|---|
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.6 |
26 Sep 2022, 22:29
Type | Values Removed | Values Added |
---|---|---|
CWE | NVD-CWE-Other | |
CPE | cpe:2.3:a:wayland:wayland:*:*:*:*:*:*:*:* | |
References | (MISC) https://gitlab.freedesktop.org/wayland/wayland/-/issues/224 - Exploit, Issue Tracking, Patch, Third Party Advisory | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.8 |
First Time |
Wayland
Wayland wayland |
23 Sep 2022, 16:31
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2022-09-23 16:15
Updated : 2023-12-10 14:35
NVD link : CVE-2021-3782
Mitre link : CVE-2021-3782
CVE.ORG link : CVE-2021-3782
JSON object : View
Products Affected
wayland
- wayland
CWE
CWE-190
Integer Overflow or Wraparound