RHSA-2022:7444: Moderate: kernel-rt security and bug fix update
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.Security Fix(es): off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516) Race condition in VTRESIZEX ioctl when vccons[i].d is already NULL leading to NULL pointer dereference (CVE-2020-36558) use-after-free vulnerability in function scosocksendmsg() (CVE-2021-3640) Memory leak for large arguments in videousercopy function in drivers/media/v4l2-core/v4l2-ioctl.c (CVE-2021-30002) smb2ioctlqueryinfo NULL Pointer Dereference (CVE-2022-0168) NULL pointer dereference in udfexpandfileadinicbdue() during writeback (CVE-2022-0617) swiotlb information leak with DMAFROMDEVICE (CVE-2022-0854) Uninitialized registers on stack in nftdochain can cause kernel pointer leakage to UM (CVE-2022-1016) Race condition in sndpcmhwfree leading to use-after-free (CVE-2022-1048) use-after-free in tcnewtfilter() in net/sched/clsapi.c (CVE-2022-1055) use-after-free and memory errors in ext4 when mounting and operating on a corrupted image (CVE-2022-1184) NULL pointer dereference in x86emulateinsn may lead to DoS (CVE-2022-1852) buffer overflow in nftsetdescconcatparse() (CVE-2022-2078) nftables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586) openvswitch: integer underflow leads to out-of-bounds write in reservesfasize() (CVE-2022-2639) use-after-free when psi trigger is destroyed while being polled (CVE-2022-2938) net/packet: slab-out-of-bounds access in packetrecvmsg() (CVE-2022-20368) possible to use the debugger to write zero into a location of choice (CVE-2022-21499) Post-barrier Return Stack Buffer Predictions (CVE-2022-26373) Memory leak in drivers/hid/hid-elo.c (CVE-2022-27950) Double free in emsusbstartxmit in drivers/net/can/usb/emsusb.c (CVE-2022-28390) Use after free in SUNRPC subsystem (CVE-2022-28893) use-after-free due to improper update of reference count in net/sched/clsu32.c (CVE-2022-29581) DoS in nfqnlmangle in net/netfilter/nfnetlinkqueue.c (CVE-2022-36946) nfsatomicopen() returns uninitialized data instead of ENOTDIR (CVE-2022-24448) 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.Additional Changes:For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2022:7444?
The severity of RHSA-2022:7444 is considered critical due to vulnerabilities allowing off-path attackers to inject data or terminate TCP sessions.
How do I fix RHSA-2022:7444?
To fix RHSA-2022:7444, you need to upgrade to the kernel-rt package version 4.18.0-425.3.1.rt7.213.el8 or later.
What vulnerabilities are addressed by RHSA-2022:7444?
RHSA-2022:7444 addresses CVE-2020-36516 which concerns an off-path attacker being able to inject data or terminate TCP sessions.
Which systems are affected by RHSA-2022:7444?
RHSA-2022:7444 affects systems running the kernel-rt packages prior to version 4.18.0-425.3.1.rt7.213.el8.
When was RHSA-2022:7444 released?
RHSA-2022:7444 was released to address critical security vulnerabilities identified in the kernel-rt packages.