RHSA-2021:3057: Important: kernel security, bug fix, and enhancement update

First published: Tue Aug 10 2021(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)</li> <li> kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)</li> <li> kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)</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> Urgent: Missing dptf_power.ko module in RHEL8 (BZ#1968381)</li> <li> [mlx5] kdump over NFS fails: mlx5 driver gives error "Stop room 95 is bigger than the SQ size 64" (BZ#1969909)</li> <li> BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 in bluetooth hci_error_reset on intel-tigerlake-h01 (BZ#1972564)</li> <li> Update CIFS to kernel 5.10 (BZ#1973637)</li> <li> Backport "tick/nohz: Conditionally restart tick on idle exit" to RHEL 8.5 (BZ#1978710)</li> <li> Significant performance drop starting on kernel-4.18.0-277 visible on mmap benchmark (BZ#1980314)</li> <li> Inaccessible NFS server overloads clients (native_queued_spin_lock_slowpath connotation?) (BZ#1980613)</li> <li> [RHEL8.4 BUG],RialtoMLK, I915 graphic driver failed to boot with one new 120HZ panel (BZ#1981250)</li> <li> act_ct: subject to DNAT tuple collision (BZ#1982494)</li> Enhancement(s):<br><li> [Lenovo 8.5 FEAT] drivers/nvme - Update to the latest upstream (BZ#1965415)</li>

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