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ALSA-2021:3447 — Important: kernel security and bug fix update

2026-10-03T14:00:32.241702+00:00

Affected: AlmaLinux:8: kernel-tools-libs-devel

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

Security Fix(es):

* kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)

* kernel: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c (CVE-2021-38201)

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):

* Update Broadcom Emulex lpfc driver for AlmaLinux8.5 with bug fixes (BZ#1948608)

* cyclictest shows >50us latency when guest enters idle (RT guest with 18 RT vCPUs) (BZ#1981336)

* xfrm: backports from upstream (BZ#1981840)

* A task is stuck waiting for the completion of the vmci_resouce releasing upon the balloon reset. (BZ#1982042)

* [mlx5] backport driver bits of net: zero-initialize tc skb extension on allocation (BZ#1982220)

* Kernel cannot kill a process doing compaction for hugepage allocation (BZ#1984085)

* AlmaLinux8.4 Nightly[0108] - [P10] [Regression] Kdump failed on AlmaLinux8.4 on SAN disk via flavafish adapter (qla2xxx/HPT/Radix) (BZ#1986156)

* [AlmaLinux8.5] scheduler updates and fixes (BZ#1987296)

* AlmaLinux 8.3 using FCOE via a FastLinQ QL45000 card will not manually scan in LUN from Target_id's over 8 (BZ#1989097)

* fixes for oopses in security mitigation runtime code patching (BZ#1989174)

* act mirred doesn't scrub packets when sending them to ingress (BZ…

bdu:2021-04028

2026-10-03T14:00:32.241859+00:00

bdu:2021-04028

Withdrawn: BELL-CVE-2021-37576 — CVE-2021-37576 does not affect BellSoft software

2026-10-03T14:00:32.241893+00:00

Withdrawn by the publisher.

certfr-2021-avi-627 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Elles permettent à un attaquant de provoqu…

2026-10-03T14:00:32.241911+00:00

certfr-2021-avi-627

EUVD-2026-29855

2026-10-03T14:00:32.241926+00:00

EUVD-2026-29855

fkie_cve-2021-37576

2026-10-03T14:00:32.241938+00:00

arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.

GHSA-w5r9-h86g-qp9x

2026-10-03T14:00:32.241961+00:00

arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.

gsd-2021-37576

2026-10-03T14:00:32.241975+00:00

gsd-2021-37576

msrc_CVE-2021-37576 — arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to…

2026-10-03T14:00:32.241985+00:00

msrc_CVE-2021-37576

OESA-2021-1310 — kernel security update

2026-10-03T14:00:32.242003+00:00

Affected: openEuler:20.03-LTS-SP1: kernel, openEuler:20.03-LTS-SP2: kernel

The Linux Kernel, the operating system core itself. Security Fix(es): A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.(CVE-2021-3659) arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.(CVE-2021-37576) A vulnerability was found in the Linux kernel in versions before v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.(CVE-2021-3655).

No description is available for this CVE.(CVE-2022-0850).

openSUSE-SU-2021:1142-1 — Security update for the Linux Kernel

2026-10-03T14:00:32.242035+00:00

Security update for the Linux Kernel

RHSA-2021:3436 — Red Hat Security Advisory: kpatch-patch security update

2026-10-03T14:00:32.242055+00:00

kernel: powerpc: KVM guest OS users can cause host OS memory corruption

SUSE-SU-2021:2643-1 — Security update for the Linux Kernel

2026-10-03T14:00:32.242071+00:00

Security update for the Linux Kernel

UBUNTU-CVE-2021-37576

2026-10-03T14:00:32.242090+00:00

Affected: Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux-hwe, Ubuntu:Pro:16.04:LTS: linux, Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:Pro:FIPS:16.04:LTS: linux-fips, Ubuntu:18.04:LTS: linux, Ubuntu:18.04:LTS: linux-dell300x, Ubuntu:18.04:LTS: linux-hwe-5.4, Ubuntu:18.04:LTS: linux-azure-edge and 26 more

arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.

WID-SEC-W-2023-0063 — Juniper Junos Space: Mehrere Schwachstellen

2026-10-03T14:00:32.242160+00:00

Ein Angreifer aus dem angrenzenden Netzwerk oder ein entfernter anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Juniper Junos Space ausnutzen, um Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen, beliebigen Code auszuführen und seine Privilegien zu erweitern.