Filtered by vendor X.org
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Total
167 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-50263 | 2 Redhat, X.org | 3 Enterprise Linux, X Server, Xwayland | 2026-06-11 | 5.5 Medium |
| A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure. | ||||
| CVE-2026-50260 | 2 Redhat, X.org | 4 Enterprise Linux, X Server, Xorg-server and 1 more | 2026-06-11 | 7.8 High |
| A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for privilege escalation if the X server runs as root. | ||||
| CVE-2026-50256 | 2 Redhat, X.org | 4 Enterprise Linux, X Server, Xorg-server and 1 more | 2026-06-10 | 7.8 High |
| A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but libXfont2's alias target name length is 1024 bytes. A font alias name between 257 and 1023 bytes causes the X server to copy that name into the undersized stack buffer without further checks. This may be used to crash the server, or for privilege escalation if the X server runs as root. | ||||
| CVE-2026-50257 | 2 Redhat, X.org | 4 Enterprise Linux, X Server, Xorg-server and 1 more | 2026-06-09 | 7.8 High |
| A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection destroys the fence, causing the use-after-free. This may be used to crash the server, or for privilege escalation if the X server runs as root. | ||||
| CVE-2026-50262 | 2 Redhat, X.org | 2 Enterprise Linux, Xorg-server | 2026-06-09 | 5.5 Medium |
| An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default. | ||||
| CVE-2026-50259 | 3 Redhat, X.org, Xorg | 5 Enterprise Linux, X Server, Xorg-server and 2 more | 2026-06-08 | 7.8 High |
| A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a stack buffer overflow. This may be used to crash the server, or for privilege escalation if the X server runs as root. | ||||
| CVE-2026-50258 | 2 Redhat, X.org | 3 Enterprise Linux, X Server, Xwayland | 2026-06-08 | 7.8 High |
| A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root. | ||||
| CVE-2026-34002 | 2 Redhat, X.org | 9 Enterprise Linux, Enterprise Linux Eus, Rhel Aus and 6 more | 2026-06-08 | 6.1 Medium |
| A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service. | ||||
| CVE-2026-34000 | 2 Redhat, X.org | 10 Enterprise Linux, Enterprise Linux Eus, Rhel Aus and 7 more | 2026-06-08 | 6.1 Medium |
| A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server. | ||||
| CVE-2026-34003 | 2 Redhat, X.org | 9 Enterprise Linux, Enterprise Linux Eus, Rhel Aus and 6 more | 2026-06-08 | 7.8 High |
| 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 disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible. | ||||
| CVE-2026-34001 | 2 Redhat, X.org | 9 Enterprise Linux, Enterprise Linux Eus, Rhel Aus and 6 more | 2026-06-08 | 7.8 High |
| A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system. | ||||
| CVE-2026-50261 | 2 Redhat, X.org | 2 Enterprise Linux, Xorg-server | 2026-06-07 | 7.8 High |
| A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root. | ||||
| CVE-2026-50264 | 2 Redhat, X.org | 2 Enterprise Linux, Xorg-server | 2026-06-07 | 7.8 High |
| An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root. | ||||
| CVE-2025-26597 | 3 Redhat, Tigervnc, X.org | 9 Enterprise Linux, Rhel Aus, Rhel E4s and 6 more | 2026-06-02 | 7.8 High |
| 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 the key actions are of the wrong size. | ||||
| CVE-2007-1003 | 2 Redhat, X.org | 2 Enterprise Linux, X11 | 2026-04-23 | N/A |
| Integer overflow in ALLOCATE_LOCAL in the ProcXCMiscGetXIDList function in the XC-MISC extension in the X.Org X11 server (xserver) 7.1-1.1.0, and other versions before 20070403, allows remote authenticated users to execute arbitrary code via a large expression, which results in memory corruption. | ||||
| CVE-2007-6428 | 2 Redhat, X.org | 3 Enterprise Linux, Tog-cup, Xserver | 2026-04-23 | N/A |
| The ProcGetReservedColormapEntries function in the TOG-CUP extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to read the contents of arbitrary memory locations via a request containing a 32-bit value that is improperly used as an array index. | ||||
| CVE-2007-4568 | 2 Redhat, X.org | 2 Enterprise Linux, X Font Server | 2026-04-23 | N/A |
| Integer overflow in the build_range function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values, which triggers a heap-based buffer overflow. | ||||
| CVE-2008-0006 | 3 Redhat, Sun, X.org | 4 Enterprise Linux, Solaris Libfont, Solaris Libxfont and 1 more | 2026-04-23 | N/A |
| Buffer overflow in (1) X.Org Xserver before 1.4.1, and (2) the libfont and libXfont libraries on some platforms including Sun Solaris, allows context-dependent attackers to execute arbitrary code via a PCF font with a large difference between the last col and first col values in the PCF_BDF_ENCODINGS table. | ||||
| CVE-2007-6427 | 8 Apple, Canonical, Debian and 5 more | 12 Mac Os X, Ubuntu Linux, Debian Linux and 9 more | 2026-04-23 | N/A |
| The XInput extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to execute arbitrary code via requests related to byte swapping and heap corruption within multiple functions, a different vulnerability than CVE-2007-4990. | ||||
| CVE-2007-4730 | 2 Redhat, X.org | 2 Enterprise Linux, Xorg-server | 2026-04-23 | N/A |
| Buffer overflow in the compNewPixmap function in compalloc.c in the Composite extension for the X.org X11 server before 1.4 allows local users to execute arbitrary code by copying data from a large pixel depth pixmap into a smaller pixel depth pixmap. | ||||