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mageiaGentoo FoundationMGASA-2023-0238
HistoryJul 19, 2023 - 10:53 p.m.

Updated kernel-linus packages fix security vulnerabilities

2023-07-1922:53:31
Gentoo Foundation
advisories.mageia.org
19
kernel-linus
5.15.120
security issues
decnet
netfilter
privilege escalation
mageia 9
dkms

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.006 Low

EPSS

Percentile

79.1%

This kernel-linus update is based on upstream 5.15.120 and fixes atleast the following security issues: A flaw null pointer dereference in the Linux kernel DECnet networking protocol was found. A remote user could use this flaw to crash the system. This is fixed by removing DECnet support (CVE-2023-3338). A use-after-free vulnerability was found in the Linux kernel’s netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue (CVE-2023-3390). NOTE!! This kernel also contains a fix for dkms builds hanging / stalling during upgrade to Mageia 9 (mga#31982) due to the new make 4.4 series utility ending up in a loop processing Makefile in kernel-devel packages. So if you use dkms packaged drivers and kernel-linus, you need to be running this kernel (or any later released ones) before you do an online upgrade to avoid the upgrade stalling / hanging. For other upstream fixes in this update, see the referenced changelogs.

OSVersionArchitecturePackageVersionFilename
Mageia8noarchkernel-linus< 5.15.120-2kernel-linus-5.15.120-2.mga8

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.006 Low

EPSS

Percentile

79.1%