CVE-2025-26595 — Stack-based Buffer Overflow in Xwayland
Severity
7.8HIGHNVD
EPSS
0.0%
top 94.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 25
Latest updateMar 17
Description
A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages4 packages
Also affects: Enterprise Linux 7.0, 8.0, 9.0