Red Hat Product Errata RHSA-2026:93450 - Security Advisory
Issued:
2026-11-02
Updated:
2026-11-02

RHSA-2026:93450 - Security Advisory

Synopsis

Important: libXtst security update

Type/Severity

Security Advisory: Important

Red Hat Lightspeed patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for libXtst is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

X.Org X11 libXtst runtime library

Security Fix(es):

  • libXtst: libXtst: Denial of Service via out-of-bounds read in RECORD reply parser (CVE-2026-94286)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64
  • Red Hat Enterprise Linux Server - AUS 9.6 x86_64
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64
  • Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64
  • Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x
  • Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6 x86_64
  • Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.6 aarch64
  • Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6 ppc64le
  • Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.6 s390x

Fixes

  • BZ - 2542377 - CVE-2026-94286 libXtst: libXtst: Denial of Service via out-of-bounds read in RECORD reply parser

Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
x86_64
libXtst-1.2.3-16.el9_6.1.i686.rpm SHA-256: 38537b5d5d295ad0ff9a7b28b18e652e92cda409311044c5a6a1dd42019367d2
libXtst-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: e93df1c9689be96c237c13e277e4874a919930f8905d71bfc149e8a753102823
libXtst-debuginfo-1.2.3-16.el9_6.1.i686.rpm SHA-256: 8eeadcb938c6515247503be80df664009cc5ecc2bcffd05bdc96a58d21a128e1
libXtst-debuginfo-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 2d99433cd8d9d59dece411cfecd824243689787066f258859828cd6912e1cb42
libXtst-debugsource-1.2.3-16.el9_6.1.i686.rpm SHA-256: 36b4a1986795addc35efbb98086f2c18f22446aa9cd79326810c1b41419a7eb2
libXtst-debugsource-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 807a1b7a0c78d81a9af2f91954162cc07f069a1fe0a587db724d7d456e26978c
libXtst-devel-1.2.3-16.el9_6.1.i686.rpm SHA-256: 7c29789cc6e1f46a0e6b00aff85c8fcb03c7461f0f0deb197eb995949d0d9c74
libXtst-devel-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 46b7fc3374a3cc70c32ba1c06ef7b0eab3d7209de9d24442c76f4f3489ac4c0a

Red Hat Enterprise Linux Server - AUS 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
x86_64
libXtst-1.2.3-16.el9_6.1.i686.rpm SHA-256: 38537b5d5d295ad0ff9a7b28b18e652e92cda409311044c5a6a1dd42019367d2
libXtst-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: e93df1c9689be96c237c13e277e4874a919930f8905d71bfc149e8a753102823
libXtst-debuginfo-1.2.3-16.el9_6.1.i686.rpm SHA-256: 8eeadcb938c6515247503be80df664009cc5ecc2bcffd05bdc96a58d21a128e1
libXtst-debuginfo-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 2d99433cd8d9d59dece411cfecd824243689787066f258859828cd6912e1cb42
libXtst-debugsource-1.2.3-16.el9_6.1.i686.rpm SHA-256: 36b4a1986795addc35efbb98086f2c18f22446aa9cd79326810c1b41419a7eb2
libXtst-debugsource-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 807a1b7a0c78d81a9af2f91954162cc07f069a1fe0a587db724d7d456e26978c
libXtst-devel-1.2.3-16.el9_6.1.i686.rpm SHA-256: 7c29789cc6e1f46a0e6b00aff85c8fcb03c7461f0f0deb197eb995949d0d9c74
libXtst-devel-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 46b7fc3374a3cc70c32ba1c06ef7b0eab3d7209de9d24442c76f4f3489ac4c0a

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
s390x
libXtst-1.2.3-16.el9_6.1.s390x.rpm SHA-256: a9bd110c9cd099be1ee49f37d71ec7b6748a57a29caa5150aaea71d7f2b6abfd
libXtst-debuginfo-1.2.3-16.el9_6.1.s390x.rpm SHA-256: 692190ef02169fb0576cf4f6a2b2171e635e8c6f50e47a166a69588d37382da0
libXtst-debugsource-1.2.3-16.el9_6.1.s390x.rpm SHA-256: a469c7f6e0f562d3a10764e966eb70e3426f95ece185f09fa8b151b04e16b4ca
libXtst-devel-1.2.3-16.el9_6.1.s390x.rpm SHA-256: 40c6fbe4bb12dc3cdba0bb53ab3c6b33ba6e5fad24e64a7c749c21935c6cc842

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
ppc64le
libXtst-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: 98ab34a164eb69a126844e853e9f6bf6125b45b017b46038fc599fb10d0a23ae
libXtst-debuginfo-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: e2a07b67cf47384012b6a85ecca18113c0400aa55ba86b3be1c41fb79607c2b1
libXtst-debugsource-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: e5b1916192c4ad6b8e787edc78366acbd2c291bd2ef86ca1c7f7fbff3b95a1c9
libXtst-devel-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: d0698fed85ea4c3765fec2fae0bce05249cf9a609dbb3305c6a21dfcfe51b1d8

Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
aarch64
libXtst-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: daecd0404d46eea90c4a079631a1c7b2d5896c6acd502708566d234b75b806fa
libXtst-debuginfo-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: a2045739b73021419a8683b3f9b144350d55f5effbdc41ac54ff588b2fb36cb4
libXtst-debugsource-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: ca7b934dec9492e2be8a5208bbfa81e96a7bb9b2aa50f800fe6e287ca687aeeb
libXtst-devel-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: 437d81e20ae4b4dda6f8bed9e611170855ef423fe887814f4b0fed302a1ba33b

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
ppc64le
libXtst-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: 98ab34a164eb69a126844e853e9f6bf6125b45b017b46038fc599fb10d0a23ae
libXtst-debuginfo-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: e2a07b67cf47384012b6a85ecca18113c0400aa55ba86b3be1c41fb79607c2b1
libXtst-debugsource-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: e5b1916192c4ad6b8e787edc78366acbd2c291bd2ef86ca1c7f7fbff3b95a1c9
libXtst-devel-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: d0698fed85ea4c3765fec2fae0bce05249cf9a609dbb3305c6a21dfcfe51b1d8

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
x86_64
libXtst-1.2.3-16.el9_6.1.i686.rpm SHA-256: 38537b5d5d295ad0ff9a7b28b18e652e92cda409311044c5a6a1dd42019367d2
libXtst-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: e93df1c9689be96c237c13e277e4874a919930f8905d71bfc149e8a753102823
libXtst-debuginfo-1.2.3-16.el9_6.1.i686.rpm SHA-256: 8eeadcb938c6515247503be80df664009cc5ecc2bcffd05bdc96a58d21a128e1
libXtst-debuginfo-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 2d99433cd8d9d59dece411cfecd824243689787066f258859828cd6912e1cb42
libXtst-debugsource-1.2.3-16.el9_6.1.i686.rpm SHA-256: 36b4a1986795addc35efbb98086f2c18f22446aa9cd79326810c1b41419a7eb2
libXtst-debugsource-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 807a1b7a0c78d81a9af2f91954162cc07f069a1fe0a587db724d7d456e26978c
libXtst-devel-1.2.3-16.el9_6.1.i686.rpm SHA-256: 7c29789cc6e1f46a0e6b00aff85c8fcb03c7461f0f0deb197eb995949d0d9c74
libXtst-devel-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 46b7fc3374a3cc70c32ba1c06ef7b0eab3d7209de9d24442c76f4f3489ac4c0a

Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
aarch64
libXtst-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: daecd0404d46eea90c4a079631a1c7b2d5896c6acd502708566d234b75b806fa
libXtst-debuginfo-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: a2045739b73021419a8683b3f9b144350d55f5effbdc41ac54ff588b2fb36cb4
libXtst-debugsource-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: ca7b934dec9492e2be8a5208bbfa81e96a7bb9b2aa50f800fe6e287ca687aeeb
libXtst-devel-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: 437d81e20ae4b4dda6f8bed9e611170855ef423fe887814f4b0fed302a1ba33b

Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
s390x
libXtst-1.2.3-16.el9_6.1.s390x.rpm SHA-256: a9bd110c9cd099be1ee49f37d71ec7b6748a57a29caa5150aaea71d7f2b6abfd
libXtst-debuginfo-1.2.3-16.el9_6.1.s390x.rpm SHA-256: 692190ef02169fb0576cf4f6a2b2171e635e8c6f50e47a166a69588d37382da0
libXtst-debugsource-1.2.3-16.el9_6.1.s390x.rpm SHA-256: a469c7f6e0f562d3a10764e966eb70e3426f95ece185f09fa8b151b04e16b4ca
libXtst-devel-1.2.3-16.el9_6.1.s390x.rpm SHA-256: 40c6fbe4bb12dc3cdba0bb53ab3c6b33ba6e5fad24e64a7c749c21935c6cc842

Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
x86_64
libXtst-1.2.3-16.el9_6.1.i686.rpm SHA-256: 38537b5d5d295ad0ff9a7b28b18e652e92cda409311044c5a6a1dd42019367d2
libXtst-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: e93df1c9689be96c237c13e277e4874a919930f8905d71bfc149e8a753102823
libXtst-debuginfo-1.2.3-16.el9_6.1.i686.rpm SHA-256: 8eeadcb938c6515247503be80df664009cc5ecc2bcffd05bdc96a58d21a128e1
libXtst-debuginfo-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 2d99433cd8d9d59dece411cfecd824243689787066f258859828cd6912e1cb42
libXtst-debugsource-1.2.3-16.el9_6.1.i686.rpm SHA-256: 36b4a1986795addc35efbb98086f2c18f22446aa9cd79326810c1b41419a7eb2
libXtst-debugsource-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 807a1b7a0c78d81a9af2f91954162cc07f069a1fe0a587db724d7d456e26978c
libXtst-devel-1.2.3-16.el9_6.1.i686.rpm SHA-256: 7c29789cc6e1f46a0e6b00aff85c8fcb03c7461f0f0deb197eb995949d0d9c74
libXtst-devel-1.2.3-16.el9_6.1.x86_64.rpm SHA-256: 46b7fc3374a3cc70c32ba1c06ef7b0eab3d7209de9d24442c76f4f3489ac4c0a

Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
aarch64
libXtst-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: daecd0404d46eea90c4a079631a1c7b2d5896c6acd502708566d234b75b806fa
libXtst-debuginfo-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: a2045739b73021419a8683b3f9b144350d55f5effbdc41ac54ff588b2fb36cb4
libXtst-debugsource-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: ca7b934dec9492e2be8a5208bbfa81e96a7bb9b2aa50f800fe6e287ca687aeeb
libXtst-devel-1.2.3-16.el9_6.1.aarch64.rpm SHA-256: 437d81e20ae4b4dda6f8bed9e611170855ef423fe887814f4b0fed302a1ba33b

Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
ppc64le
libXtst-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: 98ab34a164eb69a126844e853e9f6bf6125b45b017b46038fc599fb10d0a23ae
libXtst-debuginfo-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: e2a07b67cf47384012b6a85ecca18113c0400aa55ba86b3be1c41fb79607c2b1
libXtst-debugsource-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: e5b1916192c4ad6b8e787edc78366acbd2c291bd2ef86ca1c7f7fbff3b95a1c9
libXtst-devel-1.2.3-16.el9_6.1.ppc64le.rpm SHA-256: d0698fed85ea4c3765fec2fae0bce05249cf9a609dbb3305c6a21dfcfe51b1d8

Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.6

SRPM
libXtst-1.2.3-16.el9_6.1.src.rpm SHA-256: 53e7eeff16f56d6872c33abda983f55242ef2fdc9e6e06ee3f3bb3edec168201
s390x
libXtst-1.2.3-16.el9_6.1.s390x.rpm SHA-256: a9bd110c9cd099be1ee49f37d71ec7b6748a57a29caa5150aaea71d7f2b6abfd
libXtst-debuginfo-1.2.3-16.el9_6.1.s390x.rpm SHA-256: 692190ef02169fb0576cf4f6a2b2171e635e8c6f50e47a166a69588d37382da0
libXtst-debugsource-1.2.3-16.el9_6.1.s390x.rpm SHA-256: a469c7f6e0f562d3a10764e966eb70e3426f95ece185f09fa8b151b04e16b4ca
libXtst-devel-1.2.3-16.el9_6.1.s390x.rpm SHA-256: 40c6fbe4bb12dc3cdba0bb53ab3c6b33ba6e5fad24e64a7c749c21935c6cc842

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