CVE-2023-42753

high

Description

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

References

https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html

https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html

https://bugzilla.redhat.com/show_bug.cgi?id=2239843

https://access.redhat.com/security/cve/CVE-2023-42753

https://access.redhat.com/errata/RHSA-2024:0999

https://access.redhat.com/errata/RHSA-2024:0593

https://access.redhat.com/errata/RHSA-2024:0563

https://access.redhat.com/errata/RHSA-2024:0562

https://access.redhat.com/errata/RHSA-2024:0461

https://access.redhat.com/errata/RHSA-2024:0412

https://access.redhat.com/errata/RHSA-2024:0403

https://access.redhat.com/errata/RHSA-2024:0402

https://access.redhat.com/errata/RHSA-2024:0378

https://access.redhat.com/errata/RHSA-2024:0376

https://access.redhat.com/errata/RHSA-2024:0371

https://access.redhat.com/errata/RHSA-2024:0347

https://access.redhat.com/errata/RHSA-2024:0346

https://access.redhat.com/errata/RHSA-2024:0340

https://access.redhat.com/errata/RHSA-2024:0134

https://access.redhat.com/errata/RHSA-2024:0113

https://access.redhat.com/errata/RHSA-2024:0089

https://access.redhat.com/errata/RHSA-2023:7558

https://access.redhat.com/errata/RHSA-2023:7539

https://access.redhat.com/errata/RHSA-2023:7418

https://access.redhat.com/errata/RHSA-2023:7411

https://access.redhat.com/errata/RHSA-2023:7389

https://access.redhat.com/errata/RHSA-2023:7382

https://access.redhat.com/errata/RHSA-2023:7379

https://access.redhat.com/errata/RHSA-2023:7370

http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html

Details

Source: Mitre, NVD

Published: 2023-09-25

Updated: 2024-02-27

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High