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CVE-2026-50264

Medium priority
Needs evaluation

[DRI2 DRIGetBuffers/DRIGetBuffersWithFormat Out-Of-Bounds Write]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
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CVE-2026-50263

Medium priority
Needs evaluation

[CreateSaverWindow Use-After-Free Information Disclosure]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
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CVE-2026-50262

Medium priority
Needs evaluation

[GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
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CVE-2026-50261

Medium priority
Needs evaluation

[XSYNC Use-After-Free in SyncChangeCounter()]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
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CVE-2026-50260

Medium priority
Needs evaluation

[XSYNC Use-After-Free in FreeCounter()]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
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CVE-2026-50259

Medium priority
Needs evaluation

[XKB SetMap Request Stack-based Buffer Overflow]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
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CVE-2026-50258

Medium priority
Needs evaluation

[XKB Key Types Stack-based Buffer Overflow]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
Show all 7 packages Show less packages

CVE-2026-50257

Medium priority
Needs evaluation

[XSYNC Use-After-Free in miSyncDestroyFence()]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
Show all 7 packages Show less packages

CVE-2026-50256

Medium priority
Needs evaluation

[Font Alias Stack-based Buffer Overflow]

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
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CVE-2026-34003

Medium priority
Needs evaluation

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the...

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
Show all 7 packages Show less packages