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redhat Enterprise LinuxXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()

Risk 34
Severity
5.5
First published (updated )
CVE-2026-50263

X.Org xorg-serverXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()

Risk 74
Severity
7.8
First published (updated )
CVE-2026-50261

X.Org xorg-serverUse After Free

Risk 19
Severity
4
First published (updated )
REDHAT-BUG-2485388

redhat Enterprise LinuxXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing

Risk 74
Severity
7.8
First published (updated )
CVE-2026-50259

redhat Enterprise LinuxXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()

Risk 74
Severity
7.8
First published (updated )
CVE-2026-50257
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redhat Enterprise LinuxXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter()

Risk 74
Severity
7.8
First published (updated )
CVE-2026-50260

redhat Enterprise LinuxXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels

Risk 74
Severity
7.8
First published (updated )
CVE-2026-50258

X.Org xorg-serverThe X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes()…

Risk 33
Severity
7
First published (updated )
REDHAT-BUG-2485383

redhat Enterprise LinuxXorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch

Risk 74
Severity
7.8
First published (updated )
CVE-2026-50256

oss-secFW: X.Org Security Advisory: multiple security issues X.Org X server and Xwayland

First published (updated )
https://seclists.org/oss-sec/2026/q2/821
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oss-secFW: X.Org Security Advisory: multiple security issues X.Org X server and Xwayland

First published (updated )
https://seclists.org/oss-sec/2026/q2/775

X.Org XwaylandImportant: xorg-x11-server-Xwayland security update

Risk 45
First published (updated )
Advisory
RHSA-2026:20547

oss-secFwd: X.Org Security Advisory: multiple security issues X.Org X server and Xwayland

First published (updated )
https://seclists.org/oss-sec/2026/q2/142

oss-secFwd: X.Org Security Advisory: multiple security issues X.Org X server and Xwayland

First published (updated )
https://seclists.org/oss-sec/2026/q2/132

redhat Enterprise LinuxXorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling

Risk 70
Severity
9.1
First published (updated )
CVE-2026-34002
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redhat Enterprise LinuxXwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing.

Risk 70
Severity
9.1
First published (updated )
CVE-2026-34000

X.Org X.Org X ServerXorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

Risk 74
Severity
7.8
First published (updated )
CVE-2026-33999

X.Org X.Org X ServerInteger Underflow (Wraparound) vulnerability in the XKB compatibility map handling of the X.Org X se…

Risk 33
Severity
7
First published (updated )
REDHAT-BUG-2451106

X.Org X ServerXorg: xmayland: value overflow in xkbsetcompatmap()

Risk 64
Severity
7.3
First published (updated )
CVE-2025-62231

X.Org X ServerInteger Overflow

Risk 19
Severity
4
First published (updated )
REDHAT-BUG-2402660
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X.Org X ServerXorg: xwayland: use-after-free in xkb client resource removal

Risk 64
Severity
7.3
First published (updated )
CVE-2025-62230

X.Org X ServerUse After Free

Risk 19
Severity
4
First published (updated )
REDHAT-BUG-2402653

X.Org X ServerUse After Free

Risk 19
Severity
4
First published (updated )
REDHAT-BUG-2402649

redhat Enterprise LinuxXorg: xwayland: heap overflow in xkbwritekeysyms()

Risk 53
Severity
7.8
EPSS
0.02%
First published (updated )
CVE-2025-26596

redhat Enterprise LinuxXorg: xwayland: buffer overflow in xkbchangetypesofkey()

Risk 54
Severity
7.8
EPSS
0.02%
First published (updated )
CVE-2025-26597
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redhat Enterprise LinuxXorg: xwayland: buffer overflow in xkbvmodmasktext()

Risk 53
Severity
7.8
EPSS
0.02%
First published (updated )
CVE-2025-26595

X.Org XwaylandXorg: xwayland: use-after-free in playreleasedevents()

Risk 53
Severity
7.8
EPSS
0.02%
First published (updated )
CVE-2025-26600

X.Org XwaylandXorg: xwayland: use of uninitialized pointer in compredirectwindow()

Risk 53
Severity
7.8
EPSS
0.02%
First published (updated )
CVE-2025-26599

redhat Enterprise LinuxXorg: xwayland: out-of-bounds write in createpointerbarrierclient()

Risk 53
Severity
7.8
EPSS
0.02%
First published (updated )
CVE-2025-26598

redhat Enterprise LinuxXorg: xwayland: use-after-free in syncinittrigger()

Risk 53
Severity
7.8
EPSS
0.02%
First published (updated )
CVE-2025-26601
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