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…

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

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 memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.(CVE-2021-4002) In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel(CVE-2021-0920) A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files for the XFS file-system with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not. This vulnerability is similar to the previous CVE-2018-13405 and adds the missed fix for the XFS.(CVE-2021-4037) A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to…

Security update for the Linux Kernel

kernel: avoid cyclic entity chains due to malformed USB descriptors kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c kernel: use-after-free in nouveau kernel module kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() kernel: possible use-after-free in bluetooth module kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks kernel: DoS in ccp_run_aes_gcm_cmd() function kernel: sctp: Invalid chunks may be used to remotely remove existing associations kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients kernel: stack information leak in infiniband RDMA kernel: possible leak or coruption of data residing on hugetlbfs kernel: security regression for CVE-2018-13405 kernel: fget: check that the fd still exists after getting a ref to it kernel: KVM: SVM: out-of-bounds read/write in sev_es_string_io kernel: Buffer overwrite in decode_nfs_fh function kernel: cgroup: Use open-time creds and namespace for migration perm checks kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets…

Security update for the Linux Kernel

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 84 more

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

Ein lokaler Angreifer kann eine Schwachstelle in Linux Kernel ausnutzen, um Dateien zu manipulieren oder offenzulegen.