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AlmaLinux 8 : kpatch-patch (ALSA-2023:1659)
high Nessus Plugin ID 174007
Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2023:1659 advisory.- A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-4378)
- 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. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e (CVE-2023-0266)
- A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel's OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system. (CVE-2023-0386)
- kpatch: mm/mremap.c: incomplete fix for CVE-2022-41222 (CVE-2023-1476)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected kernel package.See Also
Plugin Details
Severity: High
ID: 174007
File Name: alma_linux_ALSA-2023-1659.nasl
Version: 1.2
Type: local
Family: Alma Linux Local Security Checks
Published: 4/7/2023
Updated: 10/4/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 8.9
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5.9
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2023-0386
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:alma:linux:kernel, cpe:/o:alma:linux:8, cpe:/o:alma:linux:8::baseos
Required KB Items: Host/local_checks_enabled, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/5/2023
Vulnerability Publication Date: 1/5/2023
CISA Known Exploited Vulnerability Due Dates: 4/20/2023
Exploitable With
Core Impact
Reference Information
CVE: CVE-2022-4378, CVE-2023-0266, CVE-2023-0386, CVE-2023-1476