RHSA-2021:3327: Important: kernel security and bug fix update

First published: Tue Aug 31 2021(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)</li> <li> kernel: race condition for removal of the HCI controller (CVE-2021-32399)</li> <li> kernel: powerpc: RTAS calls can be used to compromise kernel integrity (CVE-2020-27777)</li> <li> kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)</li> <li> kernel: lack a full memory barrier upon the assignment of a new table value in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h may lead to DoS (CVE-2021-29650)</li> 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.<br>Bug Fix(es):<br><li> SAN Switch rebooted and caused (?) OpenStack compute node to reboot (BZ#1897576)</li> <li> sysfs: cannot create duplicate filename '/class/mdio_bus/ixgbe-8100 (BZ#1915449)</li> <li> XFS: read-only recovery does not update free space accounting in superblock (BZ#1921551)</li> <li> The memcg_params field of kmem_cache struct contains an old slab address that is to small for the current size of memcg_limited_groups_array_size. (BZ#1951810)</li> <li> Backport of upstream patch "net: Update window_clamp if SOCK_RCVBUF is set " into rhel-7 (BZ#1962196)</li> <li> Kernel panic in init_cq_frag_buf (BZ#1962499)</li> <li> futex: futex_requeue can potentially free the pi_state structure twice (BZ#1966856)</li> <li> be_poll lockup doing ifenslave when netconsole using bond (BZ#1971744)</li> <li> OCP4.7 nodes panic at BUG_ON in nf_nat_setup_info() (BZ#1972970)</li>

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/severity
• agent/references
• agent/type
• agent/softwarecombine
• agent/last-modified-date
• agent/first-publish-date
• agent/tags
• agent/title
• agent/weakness
• agent/remedy
• agent/description
• agent/event
• collector/redhat-errata
• source/Red Hat
• anchor-id/RHSA-2021:3327
• agent/software-canonical-lookup
• package-manager/redhat