Summary
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: tun: avoid double free in tun_free_netdev (CVE-2022-4744)
* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
* kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)
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.
Bug Fix(es):
* kernel-rt: update RT source tree to the latest AlmaLinux-9.1.z3 Batch (BZ#2170460)
Fixed packages 12
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | kernel-rt | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-core | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-debug | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-debug-core | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-debug-devel | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-debug-kvm | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-debug-modules | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-debug-modules-extra | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-devel | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-kvm | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-modules | 5.14.0-162.22.2.rt21.186.el9_1 |
| AlmaLinux · 9 | kernel-rt-modules-extra | 5.14.0-162.22.2.rt21.186.el9_1 |
Vulnerabilities 3
-
High 7.9
Use after free in SNDRV_CTL_IOCTL_ELEM in Linux Kernel
A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. …
KEV Mar 30, 2023 -
High 7.8
A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the devi…
-
Medium 5.5
A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirec…
References
-
report
https://access.redhat.com/security/cve/CVE-2022-4269
-
report
https://access.redhat.com/security/cve/CVE-2022-4744
-
report
https://access.redhat.com/security/cve/CVE-2023-0266
-
report
https://bugzilla.redhat.com/2150272
-
report
https://bugzilla.redhat.com/2156322
-
report
https://bugzilla.redhat.com/2163379
-
advisory
https://errata.almalinux.org/9/ALSA-2023-1469.html