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CVE-2026-93545

Out-of-bounds read in libXi's XListInputDevices()

6.5 MediumFix available

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.21%Unchanged since Sep 25, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.5

Out-of-bounds read in libXi's XListInputDevices()

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
CVE-2026-93545
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
EUVDEUVD-2026-86278 6.5

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
EUVD-2026-86278
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-cv3f-68px-4hmv 6.5

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by...

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
GHSA-cv3f-68px-4hmv
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
NVD 6.5

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
CVE-2026-93545
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSVALPINE-CVE-2026-93545 6.5

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
ALPINE-CVE-2026-93545
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBELL-CVE-2026-93545 6.5
Record
BELL-CVE-2026-93545
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-04
Show 15 moreShow less
OSV 6.5

Out-of-bounds read in libXi's XListInputDevices()

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
CVE-2026-93545
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSVDEBIAN-CVE-2026-93545 6.5

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
DEBIAN-CVE-2026-93545
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-4288 7.4

libXi security update

libXi is the client-side library for the X Input Extension.

Security Fix(es):

An out-of-bounds read in libXi's XQueryDeviceState() in libXi before 1.8.4 could be used by a(CVE-2026-93541)

An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client.(CVE-2026-93542)

An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93543)

An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.(CVE-2026-93544)

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93545)

An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-94281)

An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.(CVE-2026-94282)

Record
OESA-2026-4288
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-4289 7.4

libXi security update

libXi is the client-side library for the X Input Extension.

Security Fix(es):

An out-of-bounds read in libXi's XQueryDeviceState() in libXi before 1.8.4 could be used by a(CVE-2026-93541)

An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client.(CVE-2026-93542)

An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93543)

An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.(CVE-2026-93544)

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93545)

An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-94281)

An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.(CVE-2026-94282)

Record
OESA-2026-4289
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-4290 7.4

libXi security update

libXi is the client-side library for the X Input Extension.

Security Fix(es):

An out-of-bounds read in libXi's XQueryDeviceState() in libXi before 1.8.4 could be used by a(CVE-2026-93541)

An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client.(CVE-2026-93542)

An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93543)

An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.(CVE-2026-93544)

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93545)

An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-94281)

An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.(CVE-2026-94282)

Record
OESA-2026-4290
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-4291 7.4

libXi security update

libXi is the client-side library for the X Input Extension.

Security Fix(es):

An out-of-bounds read in libXi's XQueryDeviceState() in libXi before 1.8.4 could be used by a(CVE-2026-93541)

An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client.(CVE-2026-93542)

An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93543)

An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.(CVE-2026-93544)

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-93545)

An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.(CVE-2026-94281)

An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.(CVE-2026-94282)

Record
OESA-2026-4291
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:71839 6.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Record
RHSA-2026:71839
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-93545 6.5

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
UBUNTU-CVE-2026-93545
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-104057 No score

CVE-2026-93545 affecting package libXi for versions less than 1.8.4-1

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

Record
AZL-104057
Updated
2026-11-06
OSVMGASA-2026-0526 No score

Updated libxi package fixes security vulnerabilities

Out-of-bounds read in libXi's XQueryDeviceState(). (CVE-2026-93541) Out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes(). (CVE-2026-93542) Out-of-bounds read in libXi's XI2 class parser. (CVE-2026-93543) Out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing. (CVE-2026-93544) Out-of-bounds read in libXi's XListInputDevices(). (CVE-2026-93545) Out-of-bounds read in libXi's XListInputDevices() class parsing. (CVE-2026-94281) Out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion. (CVE-2026-94282)

Record
MGASA-2026-0526
Updated
2026-11-02
OSVopenSUSE-SU-2026:11895-1 No score

libXi-devel-1.8.3-2.1 on GA media

These are all security issues fixed in the libXi-devel-1.8.3-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:11895-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:22054-1 No score

Security update for libXi

This update for libXi fixes the following issues:

  • CVE-2026-93541: out-of-bounds read in XQueryDeviceState() (bsc#1281605).
  • CVE-2026-93542: out-of-bounds read in XI2 class parsing via size_classes() and copy_classes() (bsc#1281606).
  • CVE-2026-93543: out-of-bounds read in XI2 class parser (bsc#1281608).
  • CVE-2026-93544: out-of-bounds read in XI2 XIQueryDevice reply parsing (bsc#1281609).
  • CVE-2026-93545: out-of-bounds read in ListInputDevices() (bsc#1281612).
  • CVE-2026-94281: out-of-bounds read in XListInputDevices() class parsing (bsc#1281615).
  • CVE-2026-94282: out-of-bounds read in XI2 enter/leave/focus cookie conversio (bsc#1281651).
Record
openSUSE-SU-2026:22054-1
Updated
2026-11-02
OSVSUSE-SU-2026:24119-1 No score

Security update for libXi

This update for libXi fixes the following issues:

  • CVE-2026-93541: out-of-bounds read in XQueryDeviceState() (bsc#1281605).
  • CVE-2026-93542: out-of-bounds read in XI2 class parsing via size_classes() and copy_classes() (bsc#1281606).
  • CVE-2026-93543: out-of-bounds read in XI2 class parser (bsc#1281608).
  • CVE-2026-93544: out-of-bounds read in XI2 XIQueryDevice reply parsing (bsc#1281609).
  • CVE-2026-93545: out-of-bounds read in ListInputDevices() (bsc#1281612).
  • CVE-2026-94281: out-of-bounds read in XListInputDevices() class parsing (bsc#1281615).
  • CVE-2026-94282: out-of-bounds read in XI2 enter/leave/focus cookie conversio (bsc#1281651).
Record
SUSE-SU-2026:24119-1
Updated
2026-11-02
OSVSUSE-SU-2026:24203-1 No score

Security update for libXi

This update for libXi fixes the following issues:

  • CVE-2026-93541: out-of-bounds read in XQueryDeviceState() (bsc#1281605).
  • CVE-2026-93542: out-of-bounds read in XI2 class parsing via size_classes() and copy_classes() (bsc#1281606).
  • CVE-2026-93543: out-of-bounds read in XI2 class parser (bsc#1281608).
  • CVE-2026-93544: out-of-bounds read in XI2 XIQueryDevice reply parsing (bsc#1281609).
  • CVE-2026-93545: out-of-bounds read in ListInputDevices() (bsc#1281612).
  • CVE-2026-94281: out-of-bounds read in XListInputDevices() class parsing (bsc#1281615).
  • CVE-2026-94282: out-of-bounds read in XI2 enter/leave/focus cookie conversio (bsc#1281651).
Record
SUSE-SU-2026:24203-1
Updated
2026-11-02
OSVSUSE-SU-2026:24366-1 No score

Security update for libXi

This update for libXi fixes the following issues:

  • CVE-2026-93541: Out-of-bounds read in libXi's XQueryDeviceState() (bsc#1281605).
  • CVE-2026-93542: Out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() (bsc#1281606).
  • CVE-2026-93543: Out-of-bounds read in libXi's XI2 class parser (bsc#1281608).
  • CVE-2026-93544: Out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing (bsc#1281609).
  • CVE-2026-93545: Out-of-bounds read in libXi's XListInputDevices() (bsc#1281612).
  • CVE-2026-94281: Out-of-bounds read in libXi's XListInputDevices() class parsing (bsc#1281615).
  • CVE-2026-94282: Out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion (bsc#1281651).
  • CVE-2026-109089: XGetDeviceControl Control Type Mismatch Heap Buffer Overflow (bsc#1285084).
  • CVE-2026-109090: XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow (bsc#1285085).
Record
SUSE-SU-2026:24366-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libxi
Alpine:v3.24
 before 1.8.4-r0
1.8.4-r0
libXi
Azure Linux:3
 before 1.8.4-1
1.8.4-1
libxi
Alpaquita:23
 1.8-r0 up to 1.8.4-r0
1.8.4-r0
libxi
Alpaquita:25
 1.8.2-r0 up to 1.8.4-r0
1.8.4-r0
libxi
Alpaquita:stream
 1.8-r0 up to 1.8.4-r0
1.8.4-r0
libxi
Debian:12
 All versions, plus listed versions
2:1.8-12:1.8-1+hurd.12:1.8.1-12:1.8.2-12:1.8.2-22:1.8.3-12:1.8.4-1
 None known
libxi
Debian:13
 All versions, plus listed versions
2:1.8.2-12:1.8.2-22:1.8.3-12:1.8.4-1
 None known
libxi
Debian:14
 before 2:1.8.4-1, plus listed versions
2:1.8.2-12:1.8.2-22:1.8.3-1
2:1.8.4-1
libxi
Mageia:10
From an advisory covering 7 CVEs
 before 1.8.2-2.1.mga10
1.8.2-2.1.mga10
libXi
openEuler:22.03-LTS-SP4
From an advisory covering 7 CVEs
 before 1.8-3.oe2203sp4
1.8-3.oe2203sp4
Show 18 moreShow less
Affected packages
PackageAffectedFixed
libXi
openEuler:24.03-LTS-SP1
From an advisory covering 7 CVEs
 before 1.8.1-4.oe2403sp1
1.8.1-4.oe2403sp1
libXi
openEuler:24.03-LTS-SP3
From an advisory covering 7 CVEs
 before 1.8.1-4.oe2403sp3
1.8.1-4.oe2403sp3
libXi
openEuler:24.03-LTS-SP4
From an advisory covering 7 CVEs
 before 1.8.1-4.oe2403sp4
1.8.1-4.oe2403sp4
libXi
Red Hat:hummingbird:1
From an advisory covering 6 CVEs
 before 0:1.8.3-2.1.hum1
0:1.8.3-2.1.hum1
libXi-devel
Red Hat:hummingbird:1
From an advisory covering 6 CVEs
 before 0:1.8.3-2.1.hum1
0:1.8.3-2.1.hum1
libXi
SUSE:Linux Micro 6.2
From an advisory covering 7 CVEs
 before 1.8.2-160000.4.1
1.8.2-160000.4.1
libXi
SUSE:Linux Enterprise Server 16.0
From an advisory covering 7 CVEs
 before 1.8.2-160000.4.1
1.8.2-160000.4.1
libXi
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 7 CVEs
 before 1.8.2-160000.4.1
1.8.2-160000.4.1
libXi
SUSE:Linux Micro 6.0
From an advisory covering 9 CVEs
 before 1.8.1-159998.1.1
1.8.1-159998.1.1
libxi
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
2:1.7.4-12:1.7.5-12:1.7.6-12:1.7.6-1ubuntu0.1~esm1
 None known
libxi
Ubuntu:18.04:LTS
 All versions, plus listed versions
2:1.7.9-1
 None known
libxi
Ubuntu:20.04:LTS
 All versions, plus listed versions
2:1.7.10-0ubuntu1
 None known
libxi
Ubuntu:22.04:LTS
 All versions, plus listed versions
2:1.7.10-1build22:1.7.10-1build32:1.8-12:1.8-1build1
 None known
libxi
Ubuntu:24.04:LTS
 All versions, plus listed versions
2:1.8-1build12:1.8.1-12:1.8.1-1build1
 None known
libxi
Ubuntu:26.10
 All versions, plus listed versions
2:1.8.2-2
 None known
libxi
Ubuntu:26.04:LTS
 All versions, plus listed versions
2:1.8.2-12:1.8.2-2
 None known
libXi
openSUSE:Tumbleweed
From an advisory covering 7 CVEs
 before 1.8.3-2.1
1.8.3-2.1
libXi
openSUSE:Leap 16.0
From an advisory covering 7 CVEs
 before 1.8.2-160000.4.1
1.8.2-160000.4.1

History

History
RecordedChangedSources
affectedOSV
affectedOSV
affected, factsOSV
affectedOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-93545 is a medium vulnerability (CVSS 6.5) in X.org Libxi, published September 24, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in libxi 1.8.4-r0.

References

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