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ALSA-2021:1093 — Important: kernel security, bug fix, and enhancement update

Affected: AlmaLinux:8: kernel-abi-whitelists, AlmaLinux:8: kernel-tools-libs-devel

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)

* kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)

* kernel: Use after free via PI futex state (CVE-2021-3347)

* kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c (CVE-2021-26708)

* kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)

* kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)

* Kernel: KVM: host stack overflow due to lazy update IOAPIC (CVE-2020-27152)

* kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)

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):

* race condition when creating child sockets from syncookies (BZ#1915529)

* On System Z, a hash needs state randomized for entropy extraction (BZ#1915816)

* scsi: target: core_tmr_abort_task() reporting multiple aborts for the same se_cmd->tag (BZ#1918354)

* [mlx5] VF interface stats are not reflected in "ip -s link show" / "ifconfig <vf>" commands (BZ#1921060)

* Win10 guest automatic reboot after migration in Win10 and WSL2 on Intel hosts (BZ#1923281)

* [AlmaLinux 8.3] Repeated messages - Unable to burst-read optrom segment (BZ#1924222)

* Backport…

bdu:2021-02588

certfr-2020-avi-786 — De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Certaines d'entre elles permettent à un a…

certfr-2020-avi-786

cnvd-2020-63949

EUVD-2026-46393

fkie_cve-2020-27152

An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic.c in the Linux kernel before 5.9.2. It has an infinite loop related to improper interaction between a resampler and edge triggering, aka CID-77377064c3a9.

GHSA-pfwq-4xp5-gp3h

gsd-2020-27152

msrc_CVE-2020-27152 — An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic.c in the Linux kernel before 5.9.2. It has an…

msrc_CVE-2020-27152

RHSA-2021:1081 — Red Hat Security Advisory: kernel-rt security and bug fix update

kernel: use after free in eventpoll.c may lead to escalation of privilege Kernel: KVM: host stack overflow due to lazy update IOAPIC kernel: SCSI target (LIO) write to any block on ILO backstore kernel: Use after free via PI futex state kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c kernel: iscsi: unrestricted access to sessions and handles kernel: out-of-bounds read in libiscsi module kernel: heap buffer overflow in the iSCSI subsystem

RHSA-2021:1093 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

UBUNTU-CVE-2020-27152

Affected: Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:18.04:LTS: linux-azure-edge and 10 more