xorg-x11-server before 1.19.5 was vulnerable to integer overflow in (S)ProcXIBarrierReleasePointer functions allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
[PLANNED FOR DEPRECATION. SEE MAINTENANCE NOTES AND CONSIDER CWE-252, CWE-248, OR CWE-1069.] Ignoring exceptions and other error conditions may allow an attacker to induce unexpected behavior unnoticed.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://cgit.freedesktop.org/xorg/xserver/commit/?id=d088e3c1286b548a58e62afdc70bb40981cdb9e8 | third party advisory patch |
| https://www.debian.org/security/2017/dsa-4000 | third party advisory vendor advisory |
| https://security.gentoo.org/glsa/201711-05 | vdb entry third party advisory vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1509220 | issue tracking patch vdb entry third party advisory |