quota: check block number when reading the block in quota file
A use-after-free vulnerability in the quota mechanism, leading to a denial of service.
openvswitch: integer underflow leads to out-of-bounds write
An integer coercion error in the openvswitch kernel module potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.
memory leak in ipv6_renew_options
A memory leak in the IPv6 functionality. This flaw allows a user to crash the system.
data races around icsk->icsk_af_ops pointer
A vulnerability in the tcp subsystem. This issue could allow an attacker to leak internal kernel information.
netfilter fix irc helper
A firewall flaw that can bypass the Netfilter functionality. This flaw allows a remote user to gain unauthorized access to the system.
use-after-free in nfp device driver
A vulnerability in the Netronome Flow Processor (NFP) driver. This flaw allows a manipulation that may lead to a use-after-free issue.
NFSv4.1 double svc_xprt_put if rpc_create failures
A use-after-free vulnerability the NFS filesystem. This flaw allows an attacker to conduct a remote denial of service.
xprtrdma incorrect header size calculations
An information leak flaw in NFS over RDMA. This flaw allows an attacker with normal user privileges to leak kernel information.
Handle case where the lookup of a directory but file exists
A flaw in the NFS filesystem. This flaw leads to the kernel's data leak into the userspace.
Null pointer dereference in net SLIP driver
A NULL pointer dereference in the net SLIP driver. This issue could allow an attacker to crash the system or leak internal kernel information.
Double free in net vhost driver error path
A use-after-free in the virtio network subcomponent. This issue could allow a local attacker to crash the system, and could lead to a kernel information leak problem.
Memory leak in net queue scheduler cls_u32 error handler
A use-after-free in the network subcomponent. This flaw allows a local attacker to crash the system, cause a privilege escalation, and leak kernel information.
Use after free in packet family socket in prb_retire_rx_blk_timer_expired()
kernel data leak via spectre like gadget
A speculative pointer dereference vulnerabilty that can be used to leak the contents.
Kernel crash on mount invalid xfs image
An out-of-bounds memory access flaw in the XFS file system in how a user restores an XFS image after failure (with a dirty log journal). This flaw allows a local user to crash or potentially escalate their privileges on the system.
Use after free in iscsi driver
A use-after-free in the SCSI sub-component. This issue could allow an attacker to leak kernel internal information.
Out of bound memory access in qfq network packet scheduler
An out-of-bounds memory access flaw in the traffic control (QoS) subsystem. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Use after free in ext4 setfattr
A use-after-free vulnerability in the ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw allows a privileged local user to cause a system crash or other undefined behaviors.
Missed CR0 and CR4 register check in KVM subsystem
A flaw in the KVM's Intel nested virtualization feature (nVMX). In rare circumstances (i.e., kvm_intel module loaded with parameters nested=1 and ept=0) this could allow a malicious guest to crash the host system, causing a denial of service.
Memory leak in sctp socket error path
A memory leak in the Stream Control Transmission Protocol. This issue may occur when a user starts a malicious networking service and someone connects to this service. This could allow a local user to starve resources, causing a denial of service.
Invalid memory access on mount invalid gfs2 image
A NULL pointer dereference in the gfs2 file system. This flaw allows a privileged local user to cause a kernel panic.
Use after free while changing network packet scheduler
A use-after-free in the network scheduler due to a race problem. This flaw leads to a denial of service issue.
Null pointer dereference in traffic control if try to assing classes to noqueue discipline
A NULL pointer dereference in traffic control. This issue may allow a local unprivileged user to trigger a system crash or leaked internal kernel information.
Null pointer dereference caused by race during updating ntf tables
A NULL pointer dereference in the netfilter subsystem. This flaw allows a local, unprivileged user to crash the system, resulting in a denial of service.
Use after free during routing igmp multicast message
A use-after-free flaw in the IGMP protocol. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Memory leak in cgroup subsystem
Partial fix to prevent memory leak in some cases.
fuse: pcs: missing timeout at authentication
Possible deadlock in kernel during connect to cluster storage.
network packet corruption
Unstable network connection caused by corruption packets in the network card driver.
stale pointer in oom_context->victim
Possible kernel crash while handling out of memory situation.
Null Pointer Dereference in JFS filesystem.
An attacker could use prepared image to crash the system or leak internal kernel information.
netfilter: core: Improper NAT hooks collision check.
Hooks collision during nftables and iptables hooks registering.
blk-cbt: Percpu allocation leak.
A memory leak in Changed Block Tracking code.
Potential deadlock when lazytime-enabled mounted ploop is running on top of a fuse-based vStorage.
There is a possible deadlock if a lazytime-enabled mounted ploop is running on top of vStorage. This tweak provides the ability to disable default lazytime mount option for ext4 mounts. For technical reasons this tweak is united with the oom_dump_tasks sysctl. You should use this sysctl in the following way: "echo 0 > /proc/sys/vm/oom_dump_tasks" - disable lazytime default and oom tasks dumping; "echo 1 > /proc/sys/vm/oom_dump_tasks" - disable lazytime default, enable oom tasks dumping; "echo 2 > /proc/sys/vm/oom_dump_tasks" - enable lazytime default, disable oom tasks dumping; "echo 3 > /proc/sys/vm/oom_dump_tasks" - enable lazytime default and oom tasks dumping.
netfilter: nf_tables: NULL pointer access in chain filter.
NULL pointer accsess in nf_tables chain filter leads to node crash.
Calling kfree_skb from hardware interrupt may cause deadlock
Avoid possible deadlock and packet loss. Fixes: PSBM-140896 Potential ARP DoS.
Reading data from partially written XFS file block.
A data leak flaw was found in XFS filesystem. An attacker could use this flaw to read deleted data.
Use after free for file descriptor table for vmwgfx
use-after-free flaw was found in the Linux kernel’s vmw_execbuf_copy_fence_user function in vmwgfx. This flaw allows a local attacker with user privileges to cause a privilege escalation problem.
Kernel buffers data leak or race in intel GPU driver.
Incorrect GPU cache flush may allow access to system memory and run malicious code on GPU.
Potential ARP DoS for containers in host-routed network mode.
nfs: Excess dput in __put_nfs_open_context leads to a crash.
There is double dput in nfs_prime_dcache(). Because of this excess dput we get a crash in __put_nfs_open_context().
Use-after-free in the netfilter subsystem.
The bug allows to initialize a non-stateful lookup expressions which points to a not properly detached set, which might lead to UAF. Potetntially it leads to privilege escalation.
CPU hotplug leads to a VM crash on AMD processors with PCID.
Potential privilege escalation when setting the release_agent.
Setting release_agent could potentially lead to privilege escalation from unprivileged users inside a container to the container root. It couldn't be exploited to escape containers.
Potential use-after-free in the 'recv' operation of UNIX domain sockets.
Race condition between the garbage collector and the 'recv' operation with MSG_PEEK flag was found in the implementation of UNIX domain sockets. It could result in use-after-free and could potentially allow a local attacker to escalate their privileges in the system.
Read-after-free in garbage collection for Unix domain socket file handlers.
Use-after-free in RDMA listen().
A flaw in XFS allows non-root users to read raw data from a mounted block device (CVE-2021-4155).
Potential memory corruption in nfsd4_lock().
fs/locks.c: Node crash BUG in locks_insert_block().
fs: potential kernel crash in inode_permission() when processing paths containing '..'.
nfsd: memory corruption and kernel crash in nfsd4_lock.
It was discovered that certain operations with locks on NFS could result in a memory corruption and kernel crash in nfsd4_lock(). Note that, although the patch prevents new issues of this kind, it cannot fix the corruptions that have already occurred. So, kernel crashes are still possible even within a few hours after the ReadyKernel update has been applied, but should disappear after the reboot of the affected nodes.
Virtual machines might fail to start on a host with AMD Milan CPU.
It was discovered that virtual machines on the hosts with AMD Milan CPUs could try to set IA32_SPEC_CTRL MSR during their startup and would fail to start: qemu-kvm would be killed by SIGABRT.
Use-after-free in function sco_sock_sendmsg() of the HCI subsystem.
Memory allocation failed unexpectedly in __add_to_page_cache_locked().
Ext4 FS was unexpectedly remounted read-only in a container after the container reached the limits set in the memory cgroup. It happened because the relevant memory allocations failed in __add_to_page_cache_locked while __GFP_NOFAIL flag was dropped for certain reason.
proc string out of bound in proc_skip_spaces()
bluetooth use-after-free in bluetooth l2cap_rx_state_recv
netfilter per/cpu memory leak on error path
fix device_rename for containers
use-after-free in cls_route filter
virtualize timestamps in /dev/ksmg and syslog outputs
kernel data leak in pfkey_register
A hole in vstorage FUSE synchronization protocol leading to unsynchronized chunks.
ms/xfrm: fix crash in XFRM_MSG_GETSA netlink handler