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ALSA-2021:4056 — Important: kernel security, bug fix, and enhancement update

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: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (CVE-2020-36385)

* kernel: out-of-bounds write due to a heap buffer overflow in __hidinput_change_resolution_multipliers() of hid-input.c (CVE-2021-0512)

* kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656)

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):

* [HPE 8.3 bug] No EDAC MC0 message with one-DIMM two-processor configuration under AlmaLinux8.3 (BZ#1982182)

* mlx: devlink port function shows all zero hw_addr (BZ#1986837)

* net/sched: act_mirred: allow saving the last chain processed on xmit path (BZ#1992230)

* AlmaLinux8.3 - System hang and / or r/o fs during SVC/v5k/v7k maintenance with ibmvfc (BZ#1993892)

* AlmaLinux8.1 Snapshot3 - PVT:940:virt:4TB:LPM operation failed by returning HSCLA2CF, HSCL365C SRC's - Linux partition suspend timeout (-> documentation/Linux Alert through LTC bug 182549) (BZ#1993952)

* AlmaLinux8.4 - benchTableRepDMLAsyncBarrier regresses by 34% on AlmaLinux8.4 on POWER9 compared to AlmaLinux8.2 (performance) (BZ#1997431)

* [panic] call trace: ice_probe+0x238/0x10f0 [ice] (BZ#1997539)

* [ice, PTP] ice: fix GPIO 1PPS signal (BZ#1997572)

* Fix locality handling in the tpm_tis…

bdu:2022-00683

certfr-2021-avi-695 — De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Certaines d'entre elles permettent à un a…

certfr-2021-avi-695

EUVD-2026-20974

fkie_cve-2021-3656

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.

gsd-2021-3656

msrc_CVE-2021-3656 — A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VM…

msrc_CVE-2021-3656

OESA-2022-1940 — kernel security update

Affected: openEuler:20.03-LTS-SP1: kernel

The Linux Kernel, the operating system core itself. Security Fix(es): A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.(CVE-2021-3656) An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.(CVE-2021-4157) A flaw was found in the sctp_make_strreset_req function in net/sctp/sm_make_chunk.c in the SCTP network protocol in the Linux kernel with a local user privilege access. In this flaw, an attempt to use more buffer than is allocated triggers a BUG_ON issue, leading to a denial of service (DOS).(CVE-2022-0322) ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. No…

openSUSE-SU-2021:1271-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2021:3676 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

kernel: SVM nested virtualization issue in KVM (AVIC support) kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE)

SUSE-SU-2021:3073-1 — Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP3)

Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP3)

UBUNTU-CVE-2021-3656

Affected: Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe, Ubuntu:Pro:16.04:LTS: linux-oracle, Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux, Ubuntu:18.04:LTS: linux-aws, Ubuntu:18.04:LTS: linux-aws-5.4 and 68 more

WID-SEC-W-2022-2065 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.