Red Hat Product Errata RHBA-2026:97575 - Bug Fix Advisory
Issued:
2026-11-10
Updated:
2026-11-10

RHBA-2026:97575 - Bug Fix Advisory

Synopsis

gdm bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Red Hat Lightspeed patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for gdm is now available for Red Hat Enterprise Linux 9.

Description

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from 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 9 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 9 s390x
  • Red Hat Enterprise Linux for Power, little endian 9 ppc64le
  • Red Hat Enterprise Linux for ARM 64 9 aarch64
  • Red Hat CodeReady Linux Builder for x86_64 9 x86_64
  • Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le
  • Red Hat CodeReady Linux Builder for ARM 64 9 aarch64
  • Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x

Fixes

  • RHEL-178686 - plymouthd does not quit if the video port is not enabled because a monitor is not connected (rhel-9.9)
  • RHEL-194090 - GDM authentication bypasses when authselect PAM services are empty or don't exist (rhel 9.9)
  • RHEL-240874 - Crash in GDM when managing ActUser from AccountsService (RHEL-9.9)
  • RHEL-236551 - Backport passwordless authentication final state to RHEL 9.9 (gdm)

CVEs

(none)

Red Hat Enterprise Linux for x86_64 9

SRPM
gdm-40.1-50.el9.src.rpm SHA-256: 9653ed9b297d4f5016c0b60a136c0292ef9b89a337165b83e6a509c5c6d3e7f4
x86_64
gdm-40.1-50.el9.i686.rpm SHA-256: 3803af13ac2361ed1870fe46fe6cca05a8771a95abc2f0cb4dde9ad140def9a3
gdm-40.1-50.el9.x86_64.rpm SHA-256: e73c95a2e977be47632f5a3cd69943f6a40af1f80274674f620c10c128768ef2
gdm-debuginfo-40.1-50.el9.i686.rpm SHA-256: ba9cac8a3df79c4cb7464af34634fae62ba60588f90d91e50810475d51c33b1e
gdm-debuginfo-40.1-50.el9.x86_64.rpm SHA-256: 61e5384032e9f96d83efb7657b40871f40650368e780239e3269493353370b8c
gdm-debugsource-40.1-50.el9.i686.rpm SHA-256: b7687b77bbb8df0a18b2fce56dedf2eae1daa285e91c44d789a30fd6dc351d63
gdm-debugsource-40.1-50.el9.x86_64.rpm SHA-256: b332122bd30c1ddc0616be1a95d700b77c836d37fa888ff65205c9384e3be277

Red Hat Enterprise Linux for IBM z Systems 9

SRPM
gdm-40.1-50.el9.src.rpm SHA-256: 9653ed9b297d4f5016c0b60a136c0292ef9b89a337165b83e6a509c5c6d3e7f4
s390x
gdm-40.1-50.el9.s390x.rpm SHA-256: d116661331534607317c804916291a3da559b2657819120c9014fc8450d5014c
gdm-debuginfo-40.1-50.el9.s390x.rpm SHA-256: d3161c964a3136f2ea89b25de2339d0d287df5539749839436da789fa8f70c75
gdm-debugsource-40.1-50.el9.s390x.rpm SHA-256: 28e72c5f5c6a1c6adc2988cb17cc4951537e8defd1c30f232f1ed0dbd0ed743e

Red Hat Enterprise Linux for Power, little endian 9

SRPM
gdm-40.1-50.el9.src.rpm SHA-256: 9653ed9b297d4f5016c0b60a136c0292ef9b89a337165b83e6a509c5c6d3e7f4
ppc64le
gdm-40.1-50.el9.ppc64le.rpm SHA-256: 9e50b8af03fd00a6726f69a244e4a99db232ca463ed6993aeda761cd1e340800
gdm-debuginfo-40.1-50.el9.ppc64le.rpm SHA-256: b01d5d15bfe318b72f56dcdd1ae8a10139ed3f65ea474bbdc62958d18c830bdc
gdm-debugsource-40.1-50.el9.ppc64le.rpm SHA-256: c07ef334b4aad38a2f8aad5abb8d0abcfc1b909e827915967b2b3782b4bad1ed

Red Hat Enterprise Linux for ARM 64 9

SRPM
gdm-40.1-50.el9.src.rpm SHA-256: 9653ed9b297d4f5016c0b60a136c0292ef9b89a337165b83e6a509c5c6d3e7f4
aarch64
gdm-40.1-50.el9.aarch64.rpm SHA-256: bedcc0ff7dce2a028d2d6544d7520146b5de51d691c03f67355cbc8f85a34d91
gdm-debuginfo-40.1-50.el9.aarch64.rpm SHA-256: 9a3ce614ecfa31a6599b8e390c5860856ab3a5506e26916fb9159fd13fec1593
gdm-debugsource-40.1-50.el9.aarch64.rpm SHA-256: ba9fd1bd4831eadf1769cad24a0888326c62662affbbfb42776ba72124c20203

Red Hat CodeReady Linux Builder for x86_64 9

SRPM
x86_64
gdm-debuginfo-40.1-50.el9.i686.rpm SHA-256: ba9cac8a3df79c4cb7464af34634fae62ba60588f90d91e50810475d51c33b1e
gdm-debuginfo-40.1-50.el9.x86_64.rpm SHA-256: 61e5384032e9f96d83efb7657b40871f40650368e780239e3269493353370b8c
gdm-debugsource-40.1-50.el9.i686.rpm SHA-256: b7687b77bbb8df0a18b2fce56dedf2eae1daa285e91c44d789a30fd6dc351d63
gdm-debugsource-40.1-50.el9.x86_64.rpm SHA-256: b332122bd30c1ddc0616be1a95d700b77c836d37fa888ff65205c9384e3be277
gdm-devel-40.1-50.el9.i686.rpm SHA-256: 14be67b20195b18f9b506da57fc4ce250d7b1f88653645ee32b188d70f48ab6a
gdm-devel-40.1-50.el9.x86_64.rpm SHA-256: 0fbb3beee4babaef933729f07a75ab9c8f3c3787068c757e9c3865dda4dbfaf5
gdm-pam-extensions-devel-40.1-50.el9.i686.rpm SHA-256: 0fb014da90532b571d104c5b58e74c6c270b1690ab4cba46b0d4ec7826d7a374
gdm-pam-extensions-devel-40.1-50.el9.x86_64.rpm SHA-256: a3327c4508623cf129b232a8ed8d588e66feb6d977d420200c8e4127968e4e8b

Red Hat CodeReady Linux Builder for Power, little endian 9

SRPM
ppc64le
gdm-debuginfo-40.1-50.el9.ppc64le.rpm SHA-256: b01d5d15bfe318b72f56dcdd1ae8a10139ed3f65ea474bbdc62958d18c830bdc
gdm-debugsource-40.1-50.el9.ppc64le.rpm SHA-256: c07ef334b4aad38a2f8aad5abb8d0abcfc1b909e827915967b2b3782b4bad1ed
gdm-devel-40.1-50.el9.ppc64le.rpm SHA-256: 47bbf0ac2a1f860679efd2f014a83416bb0e87eba9ba29b809c45a06ac2788a0
gdm-pam-extensions-devel-40.1-50.el9.ppc64le.rpm SHA-256: d930468ec2e3d2fcf55bf67496ff1e33e07a6403dbdf4cbc2628e2e1cdc3b5ee

Red Hat CodeReady Linux Builder for ARM 64 9

SRPM
aarch64
gdm-debuginfo-40.1-50.el9.aarch64.rpm SHA-256: 9a3ce614ecfa31a6599b8e390c5860856ab3a5506e26916fb9159fd13fec1593
gdm-debugsource-40.1-50.el9.aarch64.rpm SHA-256: ba9fd1bd4831eadf1769cad24a0888326c62662affbbfb42776ba72124c20203
gdm-devel-40.1-50.el9.aarch64.rpm SHA-256: a06b69c884853122f26954ea31207ac921279340ba885427ddd945b58182e8ad
gdm-pam-extensions-devel-40.1-50.el9.aarch64.rpm SHA-256: 4e7185766516b6ed8a1435802315b8d7c9cb1e33acc0b445831bb272d04ed47d

Red Hat CodeReady Linux Builder for IBM z Systems 9

SRPM
s390x
gdm-debuginfo-40.1-50.el9.s390x.rpm SHA-256: d3161c964a3136f2ea89b25de2339d0d287df5539749839436da789fa8f70c75
gdm-debugsource-40.1-50.el9.s390x.rpm SHA-256: 28e72c5f5c6a1c6adc2988cb17cc4951537e8defd1c30f232f1ed0dbd0ed743e
gdm-devel-40.1-50.el9.s390x.rpm SHA-256: 0df9ebc5227c01f806ef12c8059183facc8f58345b5292ccc686180bf1166bbb
gdm-pam-extensions-devel-40.1-50.el9.s390x.rpm SHA-256: cae0a08a1e25c81a59d2e28ec992d9f71b2d1a8a73409410d75ec5fcb6b164c4

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.