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mageiaGentoo FoundationMGASA-2022-0195
HistoryMay 21, 2022 - 11:50 a.m.

Updated kernel-linus packages fix security vulnerabilities

2022-05-2111:50:18
Gentoo Foundation
advisories.mageia.org
54

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

8.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

46.7%

This kernel-linus update is based on upstream 5.15.41 and fixes at least the following security issues: A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds memory write in the Linux kernel BPF subsystem due to the way a user loads BTF. This flaw allows a local user to crash or escalate their privileges on the system. NOTE: Mageia kernels by default prevents unprivileged users from being able to use eBPF so this would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space (CVE-2022-0500). Due to the small table perturb size, a memory leak flaw was found in the Linux kernel’s TCP source port generation algorithm in the net/ipv4/tcp.c function. This flaw allows an attacker to leak information and may cause a denial of service (CVE-2022-1012). A flaw was found in the Linux kernel’s nfcmrvl_nci_unregister_dev() function. A race condition leads to a use-after-free issue when simulating the NFC device from the user space (CVE-2022-1734). A flaw was found in the Linux kernel’s adjust_ptr_min_max_vals in the kernel/bpf/verifier.c function. In this flaw, a missing sanity check for *_OR_NULL pointer types that perform pointer arithmetic may cause a kernel information leak issue. NOTE: Mageia kernels by default prevents unprivileged users from being able to use eBPF so this would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space (CVE-2022-23222). The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets are in the intended state (CVE-2022-28893). Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege escalation to root (CVE-2022-29581). For other upstream fixes, see the referenced changelogs.

OSVersionArchitecturePackageVersionFilename
Mageia8noarchkernel-linus< 5.15.41-1kernel-linus-5.15.41-1.mga8

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

8.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

46.7%