CVE-2026-50262

Summary

An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 100:24.1.9-4.el10_2.2 < *unaffected
Red HatRed Hat Enterprise Linux 80:21.1.3-20.el8_10.2 < *unaffected
Red HatRed Hat Enterprise Linux 80:1.20.11-28.el8_10.2 < *unaffected
Red HatRed Hat Enterprise Linux 80:1.15.0-10.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 90:24.1.9-4.el9_8.2 < *unaffected
Red HatRed Hat Enterprise Linux 90:1.20.11-34.el9_8.2 < *unaffected
Red HatRed Hat Enterprise Linux 90:1.15.0-7.el9_8.2 < *unaffected

Weaknesses

  • CWE-125: Out-of-bounds Read

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References