RHSA-2023:1659 - Security Advisory

标题

An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.

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.

描述

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.

Security Fix(es):

• kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)
• ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
• kernel: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386)
• kpatch: mm/mremap.c: incomplete fix for CVE-2022-41222 (CVE-2023-1476)

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.

解决方案

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

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

受影响的产品

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64

修复

• BZ - 2152548 - CVE-2022-4378 kernel: stack overflow in do_proc_dointvec and proc_skip_spaces
• BZ - 2159505 - CVE-2023-0386 kernel: FUSE filesystem low-privileged user privileges escalation
• BZ - 2163379 - CVE-2023-0266 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF
• BZ - 2176035 - CVE-2023-1476 kpatch: mm/mremap.c: incomplete fix for CVE-2022-41222

CVE

• CVE-2022-4378
• CVE-2023-0266
• CVE-2023-0386
• CVE-2023-1476

参考

• https://access.redhat.com/security/updates/classification/#important