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

2026-10-03T21:16:54.840514+00:00

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:2021-03412

2026-10-03T21:16:54.840680+00:00

bdu:2021-03412

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

2026-10-03T21:16:54.840700+00:00

certfr-2020-avi-786

cnvd-2021-01276

2026-10-03T21:16:54.840717+00:00

cnvd-2021-01276

EUVD-2026-169187

2026-10-03T21:16:54.840730+00:00

EUVD-2026-169187

fkie_cve-2020-4788

2026-10-03T21:16:54.840740+00:00

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.

GHSA-fv43-627p-jvmr

2026-10-03T21:16:54.840763+00:00

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.

gsd-2020-4788

2026-10-03T21:16:54.840777+00:00

gsd-2020-4788

OESA-2021-1086 — kernel security update

2026-10-03T21:16:54.840787+00:00

Affected: openEuler:20.03-LTS: kernel

The Linux Kernel, the operating system core itself. Security Fix(es): In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.(CVE-2020-28374) An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.(CVE-2020-29568) In the nl80211_policy policy of nl80211.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not required for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-119770583(CVE-2020-27068) A flaw was found in the Linux kernels implementation of MIDI, where an attacker with a local account and the permissions to issue an ioctl commands to midi devices, could trigger a use-afte…

openSUSE-SU-2020:2161-1 — Security update for the Linux Kernel

2026-10-03T21:16:54.840835+00:00

Security update for the Linux Kernel

SUSE-SU-2020:3713-1 — Security update for the Linux Kernel

2026-10-03T21:16:54.840859+00:00

Security update for the Linux Kernel

UBUNTU-CVE-2020-4788

2026-10-03T21:16:54.840881+00:00

Affected: Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:14.04:LTS: linux, Ubuntu:16.04:LTS: linux, Ubuntu:16.04:LTS: linux-aws, Ubuntu:16.04:LTS: linux-hwe, Ubuntu:16.04:LTS: linux-kvm, Ubuntu:16.04:LTS: linux-raspi2, Ubuntu:16.04:LTS: linux-snapdragon and 50 more

IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.