RHSA-2023:3491 - Security Advisory

Topic

An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 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.

Description

Security Fix(es):

• kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)
• kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)
• samba: RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided (CVE-2022-38023)
• kernel: mm/mremap.c use-after-free vulnerability (CVE-2022-41222)
• kernel: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)
• openvswitch: ip proto 0 triggers incorrect handling (CVE-2023-1668)

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/2974891

Affected Products

• Red Hat Virtualization 4 for RHEL 8 x86_64
• Red Hat Virtualization Host 4 for RHEL 8 x86_64

Fixes

• BZ - 2137666 - CVE-2023-1668 openvswitch: ip proto 0 triggers incorrect handling
• BZ - 2138818 - CVE-2022-41222 kernel: mm/mremap.c use-after-free vulnerability
• BZ - 2150999 - CVE-2022-3564 kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c
• BZ - 2152548 - CVE-2022-4378 kernel: stack overflow in do_proc_dointvec and proc_skip_spaces
• BZ - 2154362 - CVE-2022-38023 samba: RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided
• BZ - 2176192 - CVE-2023-0461 kernel: net/ulp: use-after-free in listening ULP sockets

CVEs

• CVE-2022-3564
• CVE-2022-4378
• CVE-2022-38023
• CVE-2022-41222
• CVE-2023-0461
• CVE-2023-1668

References

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