Issued:
2026-07-15
Updated:
2026-07-15

RHSA-2026:39576 - Important: cifs-utils security, bug fix, and enhancement update

Synopsis

Important: cifs-utils security, bug fix, and enhancement update

Type/Severity

Security Advisory: Important

Topic

An update for cifs-utils is now available for Red Hat Enterprise Linux 9.

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

The SMB/CIFS protocol is a standard file sharing protocol widely deployed on Microsoft Windows machines. The cifs-utils packages contain tools for mounting shares on Linux using the SMB/CIFS protocol. The tools in this package work in conjunction with support in the kernel to allow one to mount a SMB/CIFS share onto a client and use it as if it were a standard Linux file system.

Security Fix(es):

  • cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall (CVE-2026-12505)

Bug Fix(es) and Enhancement(s):

  • cifs-utils: regression with kerberos mount [rhel-9.8.z] (JIRA:RHEL-192982)

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

ProductVersionArch
Red Hat Enterprise Linux for x86_649x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.8x86_64
Red Hat Enterprise Linux for Power, little endian9ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support9.8ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle9.8ppc64le
Red Hat Enterprise Linux for IBM z Systems9s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support9.8s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle9.8s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates9.8s390x
Red Hat Enterprise Linux for ARM 649aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support9.8aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle9.8aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates9.8aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions9.8ppc64le
Red Hat CodeReady Linux Builder for x86_649x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support9.8x86_64
Red Hat CodeReady Linux Builder for Power, little endian9ppc64le
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support9.8ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems9s390x
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support9.8s390x
Red Hat CodeReady Linux Builder for ARM 649aarch64
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support9.8aarch64

Updated Packages

  • cifs-utils-7.6-2.el9_8.aarch64.rpm
  • cifs-utils-debuginfo-7.6-2.el9_8.i686.rpm
  • cifs-utils-debuginfo-7.6-2.el9_8.x86_64.rpm
  • cifs-utils-debugsource-7.6-2.el9_8.i686.rpm
  • cifs-utils-debugsource-7.6-2.el9_8.x86_64.rpm
  • pam_cifscreds-7.6-2.el9_8.x86_64.rpm
  • cifs-utils-debuginfo-7.6-2.el9_8.aarch64.rpm
  • pam_cifscreds-debuginfo-7.6-2.el9_8.i686.rpm
  • pam_cifscreds-debuginfo-7.6-2.el9_8.x86_64.rpm
  • cifs-utils-devel-7.6-2.el9_8.x86_64.rpm
  • cifs-utils-devel-7.6-2.el9_8.ppc64le.rpm
  • pam_cifscreds-debuginfo-7.6-2.el9_8.s390x.rpm
  • cifs-utils-7.6-2.el9_8.x86_64.rpm
  • cifs-utils-debuginfo-7.6-2.el9_8.ppc64le.rpm
  • cifs-utils-debugsource-7.6-2.el9_8.ppc64le.rpm
  • cifs-utils-7.6-2.el9_8.src.rpm
  • pam_cifscreds-7.6-2.el9_8.ppc64le.rpm
  • cifs-utils-debugsource-7.6-2.el9_8.aarch64.rpm
  • cifs-utils-debugsource-7.6-2.el9_8.s390x.rpm
  • cifs-utils-7.6-2.el9_8.s390x.rpm
  • cifs-utils-devel-7.6-2.el9_8.i686.rpm
  • pam_cifscreds-debuginfo-7.6-2.el9_8.aarch64.rpm
  • pam_cifscreds-7.6-2.el9_8.aarch64.rpm
  • cifs-utils-debuginfo-7.6-2.el9_8.s390x.rpm
  • cifs-utils-devel-7.6-2.el9_8.s390x.rpm
  • pam_cifscreds-7.6-2.el9_8.s390x.rpm
  • cifs-utils-7.6-2.el9_8.ppc64le.rpm
  • pam_cifscreds-debuginfo-7.6-2.el9_8.ppc64le.rpm
  • cifs-utils-devel-7.6-2.el9_8.aarch64.rpm

Fixes

CVEs

References

Additional information