xserver-common 2:21.1.18-1ubuntu1: xserver-common 2:21.1.18-1ubuntu1 for Ubuntu 25.10 (questing)

xserver-common 2:21.1.18-1ubuntu1, released June 16, 2025, fixes 7 CVEs in xserver-common. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

HighUnsupported product

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.8

Base score, 0 to 10

Highest EPSS

0.0044

38th percentile

Priority of the 7 CVEs

Patch now 0
                                Urgent 0
                                High 7
                                Routine 0

Fixed package versions

Product	Release	Fixed in
xserver-common	Ubuntu 25.10 (questing)	2:21.1.18-1ubuntu1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2025-49177	Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixessetclientdisconnectmode	7.8	0.0044	None reported
High	CVE-2025-49176	Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension	7.8	0.0037	None reported
High	CVE-2025-49175	Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors	7.8	0.0034	None reported
High	CVE-2022-49737	xorg-server: In X.Org X server 20.11 through 21.1.16, when a client application uses easystroke for mouse gestures, the main threa...	7.7	0.0034	None reported
High	CVE-2025-49179	Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension	7.8	0.0034	None reported
High	CVE-2025-49180	Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate and reflect (randr) extension	7.8	0.0033	None reported
High	CVE-2025-49178	Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: unprocessed client request due to bytes to ignore	7.8	0.0025	None reported

Also fixes CVE-2025-49177

xnest 2:21.1.18-1ubuntu1
xnest on Ubuntu 26.04.1 LTS (resolute)
xnest 2:21.1.18-1ubuntu1
xnest on Ubuntu 25.10 (questing)
xorg-server-source 2:21.1.18-1ubuntu1
xorg-server-source on Ubuntu 26.04.1 LTS (resolute)
xorg-server-source 2:21.1.18-1ubuntu1
xorg-server-source on Ubuntu 25.10 (questing)
xserver-common 2:21.1.18-1ubuntu1
xserver-common on Ubuntu 26.04.1 LTS (resolute)
xserver-xephyr 2:21.1.18-1ubuntu1
xserver-xephyr on Ubuntu 26.04.1 LTS (resolute)
xserver-xephyr 2:21.1.18-1ubuntu1
xserver-xephyr on Ubuntu 25.10 (questing)
xserver-xorg-core 2:21.1.18-1ubuntu1
xserver-xorg-core on Ubuntu 26.04.1 LTS (resolute)

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