(RHSA-2023:2806) Moderate: xorg-x11-server security and bug fix update

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Security Fix(es):

• xorg-x11-server: buffer overflow in _GetCountedString() in xkb/xkb.c (CVE-2022-3550)

• xorg-x11-server: XkbGetKbdByName use-after-free (CVE-2022-4283)

• xorg-x11-server: XTestSwapFakeInput stack overflow (CVE-2022-46340)

• xorg-x11-server: XIPassiveUngrab out-of-bounds access (CVE-2022-46341)

• xorg-x11-server: XvdiSelectVideoNotify use-after-free (CVE-2022-46342)

• xorg-x11-server: ScreenSaverSetAttributes use-after-free (CVE-2022-46343)

• xorg-x11-server: XIChangeProperty out-of-bounds access (CVE-2022-46344)

• xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation (CVE-2023-0494)

• xorg-x11-server: memory leak in ProcXkbGetKbdByName() in xkb/xkb.c (CVE-2022-3551)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes linked from the References section.