CVE-2025-26599

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 error without validating the window tree marked just before, which leaves the...

CVE-2025-26598

CVE-2025-26598 is an out-of-bounds write in X.Org/Xwayland. The GetBarrierDevice() lookup returns the last list element when no match is found, potentially causing out-of-bounds memory access in the barrier/pointer handling path (CreatePointerBarrierClient()). This affects xorg-x11-server-Xwaylan...

CVE-2025-26598

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 found. However, the code will return the last element of the list if no matching...

CVE-2025-26598

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 found. However, the code will return the last element of the list if no matching...

CVE-2025-26598

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 found. However, the code will return the last element of the list if no matching...

CVE-2025-26597 Xorg: xwayland: buffer overflow in xkbchangetypesofkey()

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 non-zero value of groups, this will cause a buffer overflow because t...

CVE-2025-26597 Xorg: xwayland: buffer overflow in xkbchangetypesofkey()

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 non-zero value of groups, this will cause a buffer overflow because t...

CVE-2025-26597

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 non-zero value of groups, this will cause a buffer overflow because t...

CVE-2025-26597

CVE-2025-26597 affects X.Org/Xwayland. A buffer overflow can occur when XkbChangeTypesOfKey() is called first with a 0 group (resizing the key symbols table) and then with a non‑zero group (actions remain the wrong size). This is tied to the heap/buffer handling in XkbChangeTypesOfKey() and is re...

CVE-2025-26597 Xorg: xwayland: buffer overflow in xkbchangetypesofkey()

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 non-zero value of groups, this will cause a buffer overflow because t...

CVE-2025-26597

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 non-zero value of groups, this will cause a buffer overflow because t...

CVE-2025-26597

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 non-zero value of groups, this will cause a buffer overflow because t...

CVE-2025-26596

CVE-2025-26596 is a heap/buffer overflow in X.Org/Xwayland affecting XkbWriteKeySyms() due to a mismatch with XkbSizeKeySyms() that can lead to a heap-based overflow. Connected advisories (Astra Linux and various Amazon Linux advisories for xorg-x11-server-Xwayland/Xorg) confirm the issue and lis...

CVE-2025-26596 Xorg: xwayland: heap overflow in xkbwritekeysyms()

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...

CVE-2025-26596

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...

CVE-2025-26596 Xorg: xwayland: heap overflow in xkbwritekeysyms()

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...

CVE-2025-26596 Xorg: xwayland: heap overflow in xkbwritekeysyms()

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...

CVE-2025-26596

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. Mitigation Mitigation for this issue is either not available or the currently available options...

CVE-2025-26595

CVE-2025-26595 is a buffer overflow in X.Org/Xwayland where XkbVModMaskText() uses a fixed-size stack buffer without proper bounds checking. The issue affects Xorg-x11-server-Xwayland. Advisories indicate a fix is available in newer package releases (e.g., Xwayland/Xorg servers updated to 24.1.3 ...

CVE-2025-26595 Xorg: xwayland: buffer overflow in xkbvmodmasktext()

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 the buffer and would copy the data regardless of the size...