Affected: AlmaLinux:8: libiscsi, AlmaLinux:8: libiscsi-devel, AlmaLinux:8: libiscsi-utils, AlmaLinux:8: libvirt-dbus, AlmaLinux:8: netcf, AlmaLinux:8: netcf-devel, AlmaLinux:8: netcf-libs, AlmaLinux:8: qemu-guest-agent, AlmaLinux:8: qemu-img, AlmaLinux:8: qemu-kvm and 9 more

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems.

Security Fix(es):

* QEMU: virtiofsd: potential privilege escalation via CVE-2018-13405 (CVE-2022-0358)

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.

Withdrawn by the publisher.

The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID.

The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID.

Security update for the Linux Kernel

kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation kernel: Use-after-free in drivers/media/dvb-core/dvb_frontend.c kernel: Salsa20 encryption algorithm does not correctly handle zero-length inputs allowing local attackers to cause denial-of-service kernel: HMAC implementation does not validate that the underlying cryptographic hash algorithm is unkeyed allowing local attackers to cause denial-of-service kernel: Mishandled freeing of instances in pcrypt.c can allow a local user to cause a denial of service kernel: Inifinite loop vulnerability in mm/madvise.c:madvise_willneed() function allows local denial of service kernel: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c kernel: netfilter: xtables NULL pointer dereference in ip6_tables.c:ip6t_do_table() leading to a crash kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c kernel: NULL pointer dereference in ext4/mballoc.c:ext4_process_freed_data() when mounting crafted ext4 image kernel: NULL pointer dereference in ext4/xattr.c:ext4_xattr_inode_hash() causes crash with crafted ext4 image kernel: out-of-bound access in fs/posix_acl.c:get_acl() causes crash with crafted ext4 image kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg() kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service hw: cpu: speculative store bypass kernel: drivers/block/loop.c mishandles lo_release…

Security update for the Linux Kernel

Affected: Ubuntu:14.04:LTS: linux, Ubuntu:14.04:LTS: linux-aws, Ubuntu:14.04:LTS: linux-lts-xenial, Ubuntu:16.04:LTS: linux, Ubuntu:16.04:LTS: linux-aws, Ubuntu:16.04:LTS: linux-azure, Ubuntu:16.04:LTS: linux-gcp, Ubuntu:16.04:LTS: linux-hwe, Ubuntu:16.04:LTS: linux-kvm, Ubuntu:16.04:LTS: linux-raspi2 and 17 more

The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID.

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um seine Privilegien zu erhöhen und um einen Denial of Service Zustand herbeizuführen.