SB2022092370 - openEuler 22.03 LTS update for kernel
Published: September 23, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Security restrictions bypass (CVE-ID: CVE-2022-26373)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to non-transparent sharing of return predictor targets between contexts in Intel CPU processors. A local user can bypass the expected architecture isolation between contexts and gain access to sensitive information on the system.
2) Heap-based buffer overflow (CVE-ID: CVE-2022-2991)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the LightNVM subsystem in Linux kernel. A local user can execute arbitrary code on the system with kernel privileges.
3) Out-of-bounds read (CVE-ID: CVE-2022-2905)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the Linux kernel BPF subsystem. A local user can call the bpf_tail_call() function with a key larger than the max_entries of the map, trigger an out-of-bounds read and read parts of kernel memory.
4) Use-after-free (CVE-ID: CVE-2022-3078)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within drivers/media/test-drivers/vidtv/vidtv_s302m.c in Linux kernel. A local user can trigger a use-after-free error and crash the kernel.
5) Use-after-free (CVE-ID: CVE-2022-40307)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the drivers/firmware/efi/capsule-loader.c in Linux kernel. A local user can trigger a use-after-free error and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.