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ALSA-2022:1988 — Important: kernel security, bug fix, and enhancement update

Affected: AlmaLinux:8: bpftool, AlmaLinux:8: kernel, AlmaLinux:8: kernel-abi-stablelists, AlmaLinux:8: kernel-core, AlmaLinux:8: kernel-cross-headers, AlmaLinux:8: kernel-debug, AlmaLinux:8: kernel-debug-core, AlmaLinux:8: kernel-debug-devel, AlmaLinux:8: kernel-debug-modules, AlmaLinux:8: kernel-debug-modules-extra and 10 more

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

Security Fix(es):

* kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

* kernel: avoid cyclic entity chains due to malformed USB descriptors (CVE-2020-0404)

* kernel: speculation on incompletely validated data on IBM Power9 (CVE-2020-4788)

* kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c (CVE-2020-13974)

* kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free (CVE-2021-0941)

* kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() (CVE-2021-3612)

* kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts (CVE-2021-3669)

* kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c (CVE-2021-3743)

* kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() (CVE-2021-3744)

* kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

* kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks (CVE-2021-3759)

* kernel: DoS in ccp_run_aes_gcm_cmd() function (CVE-2021-3764)

* kernel: sctp: Invalid chunks may be used to remotely remove existing associations (CVE-2021-3772)

* kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (CVE-2021-3773)

* kernel: possible leak or coruption of data residing on hugetlbfs (CVE-2021-4002)

* kernel: security regressi…

bdu:2021-03994

certfr-2021-avi-553 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian et Debian LTS. Elles permettent à un atta…

certfr-2021-avi-553

cnvd-2021-60526

EUVD-2026-22405

fkie_cve-2021-21781

An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11

GHSA-v4c8-84p4-cxv7

gsd-2021-21781

OESA-2021-1324 — 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): In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.(CVE-2021-34556) In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.(CVE-2021-35477) An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11(CVE-2021-21781) In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size.(CVE-2021-38160)

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

Security update for the Linux Kernel

SUSE-SU-2021:2645-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2021-21781

Affected: Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, 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:Pro:16.04:LTS: linux and 66 more

WID-SEC-W-2022-0112 — Google Android: Mehrere Schwachstellen ermöglichen Privilegieneskalation

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Google Android ausnutzen, um seine Privilegien zu erhöhen, vertrauliche Informationen offenzulegen, beliebigen Code zur Ausführung zu bringen und einen Denial-of-Service-Zustand auszulösen.