Linux · 
Red Hat · Security advisory · June 29, 2026
Red Hat · Security advisory · June 29, 2026RHSA-2026:29844: Security update for 7 packages
RHSA-2026:29844, released June 29, 2026, fixes 9 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
9
None rated Critical
Exploited
0
None reported
Highest CVSS
7.8
Base score, 0 to 10
Highest EPSS
0.0017
5th percentile
Priority of the 9 CVEs
Patch now 0
Urgent 0
High 9
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| tigervnc | RHEL 9 | 0:1.15.0-7.el9_8.2 |
| tigervnc-icons | RHEL 9 | 0:1.15.0-7.el9_8.2 |
| tigervnc-license | RHEL 9 | 0:1.15.0-7.el9_8.2 |
| tigervnc-selinux | RHEL 9 | 0:1.15.0-7.el9_8.2 |
| tigervnc-server | RHEL 9 | 0:1.15.0-7.el9_8.2 |
| tigervnc-server-minimal | RHEL 9 | 0:1.15.0-7.el9_8.2 |
| tigervnc-server-module | RHEL 9 | 0:1.15.0-7.el9_8.2 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-50259 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing | 7.8 | 0.0017 | None reported |
| High | CVE-2026-50258 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels | 7.8 | 0.0016 | None reported |
| High | CVE-2026-50256 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch | 7.8 | 0.0016 | None reported |
| High | CVE-2026-50260 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter() | 7.8 | 0.0015 | None reported |
| High | CVE-2026-50261 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter() | 7.8 | 0.0015 | None reported |
| High | CVE-2026-50264 | xorg-server: An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat | 7.8 | 0.0015 | None reported |
| High | CVE-2026-50257 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence() | 7.8 | 0.0014 | None reported |
| High | CVE-2026-50263 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow() | 7.8 | 0.0014 | None reported |
| High | CVE-2026-50262 | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes | 7.8 | 0.0013 | None reported |
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