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ALSA-2021:3057 — 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: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)

* kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)

* kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)

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):

* Urgent: Missing dptf_power.ko module in AlmaLinux8 (BZ#1968381)

* [mlx5] kdump over NFS fails: mlx5 driver gives error "Stop room 95 is bigger than the SQ size 64" (BZ#1969909)

* BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 in bluetooth hci_error_reset on intel-tigerlake-h01 (BZ#1972564)

* Update CIFS to kernel 5.10 (BZ#1973637)

* Backport "tick/nohz: Conditionally restart tick on idle exit" to AlmaLinux 8.5 (BZ#1978710)

* Significant performance drop starting on kernel-4.18.0-277 visible on mmap benchmark (BZ#1980314)

* Inaccessible NFS server overloads clients (native_queued_spin_lock_slowpath connotation?) (BZ#1980613)

* [AlmaLinux8.4 BUG],RialtoMLK, I915 graphic driver failed to boot with one new 120HZ panel (BZ#1981250)

* act_ct: subject to DNAT tuple collision (BZ#1982494)

Enhancement(s):

* [Lenovo 8.5 FEAT] drivers/nvme - Updat…

bdu:2021-04260

certfr-2021-avi-550 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un at…

certfr-2021-avi-550

cnvd-2021-48914

EUVD-2026-264668

fkie_cve-2021-22555

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

gsd-2021-22555

OESA-2021-1279 — kernel security update

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

The Linux Kernel, the operating system core itself. Security Fix(es): there was a null pointer dereference in llcp_sock_getname in net/nfc/llcp_sock.c and reproduced it in linux-5.13.0-rc2. An unprivileged user can trigger this bug and cause denial of service. #Root Cause After creating an nfc socket, bind the address by calling bind(), if LLCP_SAP_MAX was used as SAP, it cause the bind() failed and there would set llcp_sock->service_name as NULL. Although bind() returns an error here, it does not affect calling other socket functions. sock_getname() would invoke llcp_sock_getname(), llcp_sock_getname copied service name from llcp_sock->service_name by memcpy but llcp_sock->service_name is NULL. #Fix the patch for this issue: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=4ac06a1e013c(CVE-2021-3587) An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.(CVE-2020-36385) The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.(CVE-2020-28097) In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory location…

openSUSE-SU-2021:1076-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2021:3044 — Red Hat Security Advisory: kpatch-patch security update

kernel: race condition in net/can/bcm.c leads to local privilege escalation kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c

SUSE-SU-2021:2406-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2021-22555

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:Pro:16.04:LTS: linux, Ubuntu:Pro:16.04:LTS: linux-aws, 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 and 68 more

WID-SEC-W-2022-0609 — Linux Kernel: Schwachstelle ermöglicht Erlangen von Systemrechten

Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um Systemrechte zu erlangen und einen Denial of Service Zustand herzustellen.