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CVE-2022-49737

Medium priority
Needs evaluation

In X.Org X server 20.11 through 21.1.16, when a client application uses easystroke for mouse gestures, the main thread modifies various data structures used by the input thread without acquiring a lock, aka a race condition. In...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xorg-server-hwe-16.04 Not in release Not in release Not in release Needs evaluation
xorg-server-hwe-18.04 Not in release Not in release Not in release Needs evaluation
xwayland Needs evaluation Needs evaluation Not in release
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CVE-2025-26601

Medium priority
Fixed

A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called....

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2025-26600

Medium priority
Fixed

A use-after-free flaw was found in X.Org and Xwayland. When a device is removed while still frozen, the events queued for that device remain while the device is freed. Replaying the events will cause a use-after-free.

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2025-26599

Medium priority
Fixed

An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2025-26598

Medium priority
Fixed

An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2025-26597

Medium priority
Fixed

A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2025-26596

Medium priority
Fixed

A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2025-26595

Medium priority
Fixed

A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2025-26594

Medium priority
Fixed

A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free.

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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CVE-2024-9632

Medium priority

Some fixes available 11 of 12

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service...

7 affected packages

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

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-hwe-16.04 Not in release Not in release Not in release Not affected
xorg-hwe-18.04 Not in release Not in release Not in release Not affected
xorg-server Fixed Fixed Fixed Fixed Fixed
xorg-server-hwe-16.04 Not in release Not in release Not in release Fixed
xorg-server-hwe-18.04 Not in release Not in release Not in release Fixed
xwayland Fixed Fixed Not in release
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