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Vendor: X.org • 97 CVEs

CVEs (97)

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1X.org
1X Server
Jun 17, 2026
Oct 17, 2022
N/A· v4
6.5 MEDIUM· v3
N/A· v2
A vulnerability, which was classified as problematic, was found in X.org Server. This affects an unknown part of the file hw/xquartz/X11Controller.m of the component xquartz. The manipulation leads to denial of service....Show more
A vulnerability, which was classified as problematic, was found in X.org Server. This affects an unknown part of the file hw/xquartz/X11Controller.m of the component xquartz. The manipulation leads to denial of service. It is recommended to apply a patch to fix this issue. The identifier VDB-211053 was assigned to this vulnerability.Show less
3Debian
FedoraprojectX.org
3Debian Linux
FedoraX Server
Jun 17, 2026
Oct 17, 2022
N/A· v4
6.5 MEDIUM· v3
N/A· v2
A vulnerability, which was classified as problematic, has been found in X.org Server. Affected by this issue is the function ProcXkbGetKbdByName of the file xkb/xkb.c. The manipulation leads to memory leak. It is recomme...Show more
A vulnerability, which was classified as problematic, has been found in X.org Server. Affected by this issue is the function ProcXkbGetKbdByName of the file xkb/xkb.c. The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211052.Show less
3Debian
FedoraprojectX.org
3Debian Linux
FedoraX Server
Jun 17, 2026
Oct 17, 2022
N/A· v4
8.8 HIGH· v3
N/A· v2
A vulnerability classified as critical was found in X.org Server. Affected by this vulnerability is the function _GetCountedString of the file xkb/xkb.c. The manipulation leads to buffer overflow. It is recommended to ap...Show more
A vulnerability classified as critical was found in X.org Server. Affected by this vulnerability is the function _GetCountedString of the file xkb/xkb.c. The manipulation leads to buffer overflow. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211051.Show less
1X.org
1X Server
Jun 17, 2026
Sep 1, 2022
N/A· v4
7.8 HIGH· v3
N/A· v2
A flaw was found in the Xorg-x11-server. The specific flaw exists within the handling of ProcXkbSetDeviceInfo requests. The issue results from the lack of proper validation of user-supplied data, which can result in a me...Show more
A flaw was found in the Xorg-x11-server. The specific flaw exists within the handling of ProcXkbSetDeviceInfo requests. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. This flaw allows an attacker to escalate privileges and execute arbitrary code in the context of root.Show less
1X.org
1X Server
Jun 17, 2026
Sep 1, 2022
N/A· v4
7.8 HIGH· v3
N/A· v2
A flaw was found in the Xorg-x11-server. An out-of-bounds access issue can occur in the ProcXkbSetGeometry function due to improper validation of the request length.
3Debian
FedoraprojectX.org
3Debian Linux
FedoraX Server
Jun 17, 2026
Dec 17, 2021
N/A· v4
7.8 HIGH· v3
7.2 HIGH· v2
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data confidentialit...Show more
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
3Debian
FedoraprojectX.org
3Debian Linux
FedoraX Server
Jun 17, 2026
Dec 17, 2021
N/A· v4
7.8 HIGH· v3
7.2 HIGH· v2
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcScreenSaverSuspend function. The highest threat from this vulnerability is to data confident...Show more
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcScreenSaverSuspend function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
3Debian
FedoraprojectX.org
3Debian Linux
FedoraX Server
Jun 17, 2026
Dec 17, 2021
N/A· v4
7.8 HIGH· v3
7.2 HIGH· v2
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcXFixesCreatePointerBarrier function. The highest threat from this vulnerability is to data c...Show more
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcXFixesCreatePointerBarrier function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
3Debian
FedoraprojectX.org
3Debian Linux
FedoraX Server
Jun 17, 2026
Dec 17, 2021
N/A· v4
7.8 HIGH· v3
7.2 HIGH· v2
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to data confid...Show more
A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
1X.org
1X Server
Jun 17, 2026
May 26, 2021
N/A· v4
7.0 HIGH· v3
4.4 MEDIUM· v2
A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an attacker to take control of an X application by impersonating the server it is expecting t...Show more
A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an attacker to take control of an X application by impersonating the server it is expecting to connect to.Show less
4Debian
FedoraprojectRedhat+1 more
4Debian Linux
Enterprise LinuxFedora+1 more
Jun 17, 2026
Apr 26, 2021
N/A· v4
7.8 HIGH· v3
7.2 HIGH· v2
A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidential...Show more
A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
1X.org
1X Server
Jun 17, 2026
Jan 20, 2021
N/A· v4
7.8 HIGH· v3
6.1 MEDIUM· v2
A flaw was found in the X.Org Server before version 1.20.10. An out-of-bounds access in the XkbSetMap function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confi...Show more
A flaw was found in the X.Org Server before version 1.20.10. An out-of-bounds access in the XkbSetMap function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
2Redhat
X.org
2Enterprise Linux
X Server
Jun 17, 2026
Dec 15, 2020
N/A· v4
7.8 HIGH· v3
4.6 MEDIUM· v2
A flaw was found in xorg-x11-server before 1.20.10. A heap-buffer overflow in XkbSetDeviceInfo may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and i...Show more
A flaw was found in xorg-x11-server before 1.20.10. A heap-buffer overflow in XkbSetDeviceInfo may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
3Canonical
RedhatX.org
3Enterprise Linux
Ubuntu LinuxX Server
Jun 17, 2026
Sep 15, 2020
N/A· v4
7.8 HIGH· v3
4.6 MEDIUM· v2
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data...Show more
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
3Canonical
RedhatX.org
3Enterprise Linux
Ubuntu LinuxX Server
Jun 17, 2026
Sep 15, 2020
N/A· v4
7.8 HIGH· v3
4.6 MEDIUM· v2
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data...Show more
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
3Canonical
RedhatX.org
3Enterprise Linux
Ubuntu LinuxX Server
Jun 17, 2026
Sep 15, 2020
N/A· v4
7.8 HIGH· v3
4.6 MEDIUM· v2
A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerabili...Show more
A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
2Canonical
X.org
2Ubuntu Linux
X Server
Jun 17, 2026
Sep 15, 2020
N/A· v4
7.8 HIGH· v3
4.6 MEDIUM· v2
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Out-Of-Bounds access in XkbSetNames function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data conf...Show more
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Out-Of-Bounds access in XkbSetNames function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.Show less
3Canonical
DebianX.org
3Debian Linux
Ubuntu LinuxX Server
Jun 17, 2026
Aug 5, 2020
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASL...Show more
A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.Show less
1X.org
1X Server
Jun 17, 2026
Oct 16, 2019
N/A· v4
7.8 HIGH· v3
4.6 MEDIUM· v2
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. For example, by sending ct.c_char 1000 times, an attacker can cause a denial of service (application crash) or possibly ha...Show more
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. For example, by sending ct.c_char 1000 times, an attacker can cause a denial of service (application crash) or possibly have unspecified other impact. Note: It is disputed if the X.Org X Server is involved or if there is a stack overflow.Show less
4Canonical
DebianRedhat+1 more
9Debian Linux
Enterprise Linux DesktopEnterprise Linux Server+6 more
Aug 29, 2025
Oct 25, 2018
N/A· v4
6.6 MEDIUM· v3
7.2 HIGH· v2
A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via ph...Show more
A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.Show less