(RHSA-2019:2809) Important: kernel-alt security, bug fix, and enhancement update

The kernel-alt packages provide the Linux kernel version 4.x.

Security Fix(es):

• Kernel: page cache side channel attacks (CVE-2019-5489)

• Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974)

• kernel: broken permission and object lifetime handling for PTRACE_TRACEME (CVE-2019-13272)

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.

Bug Fix(es):

• [kernel-alt]: BUG: unable to handle kernel NULL pointer IP: crypto_remove_spawns+0x118/0x2e0 (BZ#1536967)

• [HPE Apache] update ssif max_xmit_msg_size limit for multi-part messages (BZ#1610534)

• RHEL-Alt-7.6 - powerpc/pseries: Fix unitialized timer reset on migration / powerpc/pseries/mobility: Extend start/stop topology update scope (LPM) (BZ#1673613)

• RHEL-Alt-7.6 - s390: sha3_generic module fails and triggers panic when in FIPS mode (BZ#1673979)

• RHEL-Alt-7.6 - System crashed after oom - During ICP deployment (BZ#1710304)

• kernel-alt: Race condition in hashtables [rhel-alt-7.6.z] (BZ#1712127)

• RHEL-Alt-7.6 - OP930:PM_Test:cpupower -r command set values for first 3 cores in quad and misses last core. (CORAL) (BZ#1717836)

• RHEL-Alt-7.6 - disable runtime NUMA remapping for PRRN/LPM/VPHN (BZ#1717906)

• fragmented packets timing out (BZ#1729066)

• Backport TCP follow-up for small buffers (BZ#1733617)

Enhancement(s):

• RHEL-Alt-7.6 - perfevent PMDA cannot create file descriptors for reading nest events using the perf API (pcp/kernel) (CORAL) (BZ#1723036)