RHSA-2020:2104: Important: kernel-alt security and bug fix update

The kernel-alt packages provide the Linux kernel version 4.x.<br>Security Fix(es):<br><li> kernel: double free may be caused by the function allocatetracebuffer in the file kernel/trace/trace.c (CVE-2017-18595)</li> <li> kernel: use-after-free in blkaddtrace in kernel/trace/blktrace.c (CVE-2019-19768)</li> <li> Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)</li> <li> kernel: out of bounds write in function i2csmbusxferemulated in drivers/i2c/i2c-core-smbus.c (CVE-2017-18551)</li> <li> kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)</li> <li> kernel: denial of service in in xfssetattrnonsize in fs/xfs/xfsiops.c (CVE-2019-15538)</li> <li> kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4putsuper in fs/ext4/super.c (CVE-2019-19447)</li> <li> kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free (CVE-2019-19524)</li> <li> kernel: out-of-bounds read in setfdc in drivers/block/floppy.c (CVE-2020-9383)</li> <li> kernel: null pointer dereference in dlparparseccproperty in arch/powerrc/platforms/pseries/dlpar.c causing denial of service (CVE-2019-12614)</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> [7.5-alt][ext4/xfstests generic/468] fix fdatasync(2) after fallocate(2) operation (upstream fixed) [rhel-alt-7.6.z] (BZ#1554273)</li> <li> [RHEL-ALT-7.6.z][arm64] CN99xx: DIMM errors not populated in EDAC sysfs (BZ#1778697)</li>