Vulnerabilities (CVE)

Filtered by vendor X.org Subscribe
Total 164 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2006-4447 1 X.org 9 Emu-linux-x87-xlibs, X11r6, X11r7 and 6 more 2026-06-16 7.2 HIGH N/A
X.Org and XFree86, including libX11, xdm, xf86dga, xinit, xload, xtrans, and xterm, does not check the return values for setuid and seteuid calls when attempting to drop privileges, which might allow local users to gain privileges by causing those calls to fail, such as by exceeding a ulimit.
CVE-2006-3740 2 X.org, Xfree86 Project 2 X.org, Xfree86 X 2026-06-16 7.2 HIGH N/A
Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (1) CMap and (2) CIDFont font data with modified item counts in the (a) begincodespacerange, (b) cidrange, and (c) notdefrange sections.
CVE-2006-3739 2 X.org, Xfree86 Project 2 X.org, Xfree86 X 2026-06-16 7.2 HIGH N/A
Integer overflow in the CIDAFM function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted Adobe Font Metrics (AFM) files with a modified number of character metrics (StartCharMetrics), which leads to a heap-based buffer overflow.
CVE-2006-1526 1 X.org 1 X11r6 2026-06-16 2.1 LOW N/A
Buffer overflow in the X render (Xrender) extension in X.org X server 6.8.0 up to allows attackers to cause a denial of service (crash), as demonstrated by the (1) XRenderCompositeTriStrip and (2) XRenderCompositeTriFan requests in the rendertest from XCB xcb/xcb-demo, which leads to an incorrect memory allocation due to a typo in an expression that uses a "&" instead of a "*" operator. NOTE: the subject line of the original announcement used an incorrect CVE number for this issue.
CVE-2006-0745 5 Mandrakesoft, Redhat, Sun and 2 more 6 Mandrake Linux, Fedora Core, Solaris and 3 more 2026-06-16 7.2 HIGH N/A
X.Org server (xorg-server) 1.0.0 and later, X11R6.9.0, and X11R7.0 inadvertently treats the address of the geteuid function as if it is the return value of a call to geteuid, which allows local users to bypass intended restrictions and (1) execute arbitrary code via the -modulepath command line option or (2) overwrite arbitrary files via -logfile.
CVE-2006-0197 1 X.org 1 X.org 2026-06-16 5.0 MEDIUM N/A
The XClientMessageEvent struct used in certain components of X.Org 6.8.2 and earlier, possibly including (1) the X server and (2) Xlib, uses a "long" specifier for elements of the l array, which results in inconsistent sizes in the struct on 32-bit versus 64-bit platforms, and might allow attackers to cause a denial of service (application crash) and possibly conduct other attacks.
CVE-2005-0605 8 Altlinux, Lesstif, Mandrakesoft and 5 more 11 Alt Linux, Lesstif, Mandrake Linux and 8 more 2026-06-16 7.5 HIGH N/A
scan.c for LibXPM may allow attackers to execute arbitrary code via a negative bitmap_unit value that leads to a buffer overflow.
CVE-2004-0914 6 Gentoo, Lesstif, Redhat and 3 more 6 Linux, Lesstif, Fedora Core and 3 more 2026-06-16 10.0 HIGH N/A
Multiple vulnerabilities in libXpm for 6.8.1 and earlier, as used in XFree86 and other packages, include (1) multiple integer overflows, (2) out-of-bounds memory accesses, (3) directory traversal, (4) shell metacharacter, (5) endless loops, and (6) memory leaks, which could allow remote attackers to obtain sensitive information, cause a denial of service (application crash), or execute arbitrary code via a certain XPM image file. NOTE: it is highly likely that this candidate will be SPLIT into other candidates in the future, per CVE's content decisions.
CVE-2004-0688 4 Openbsd, Suse, X.org and 1 more 4 Openbsd, Suse Linux, X11r6 and 1 more 2026-06-16 7.5 HIGH N/A
Multiple integer overflows in (1) the xpmParseColors function in parse.c, (2) XpmCreateImageFromXpmImage, (3) CreateXImage, (4) ParsePixels, and (5) ParseAndPutPixels for libXpm before 6.8.1 may allow remote attackers to execute arbitrary code via a malformed XPM image file.
CVE-2004-0687 4 Openbsd, Suse, X.org and 1 more 4 Openbsd, Suse Linux, X11r6 and 1 more 2026-06-16 7.5 HIGH N/A
Multiple stack-based buffer overflows in (1) xpmParseColors in parse.c, (2) ParseAndPutPixels in create.c, and (3) ParsePixels in parse.c for libXpm before 6.8.1 allow remote attackers to execute arbitrary code via a malformed XPM image file.
CVE-2004-0419 3 Gentoo, X.org, Xfree86 Project 3 Linux, X11r6, Xdm 2026-06-16 7.5 HIGH N/A
XDM in XFree86 opens a chooserFd TCP socket even when DisplayManager.requestPort is 0, which could allow remote attackers to connect to the port, in violation of the intended restrictions.
CVE-1999-0965 1 X.org 1 X11 2026-06-16 6.2 MEDIUM N/A
Race condition in xterm allows local users to modify arbitrary files via the logging option.
CVE-1999-0526 1 X.org 1 X11 2026-06-16 10.0 HIGH N/A
An X server's access control is disabled (e.g. through an "xhost +" command) and allows anyone to connect to the server.
CVE-2026-50264 2 Redhat, X.org 3 Enterprise Linux, X Server, Xwayland 2026-06-16 N/A 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-2026-50261 2 Redhat, X.org 3 Enterprise Linux, X Server, Xwayland 2026-06-15 N/A 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-2026-50262 2 Redhat, X.org 3 Enterprise Linux, X Server, Xwayland 2026-06-15 N/A 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-2026-50263 2 Redhat, X.org 3 Enterprise Linux, X Server, Xwayland 2026-06-11 N/A 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 3 Enterprise Linux, X Server, Xwayland 2026-06-11 N/A 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-2026-50259 2 Redhat, X.org 3 Enterprise Linux, X Server, Xwayland 2026-06-08 N/A 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 N/A 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.