PT-2025-13379 · Linux+4 · Linux Kernel+4

Published 2023-01-11 · Updated 2025-09-29 · CVE-2023-53033

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to incorrect arithmetic operations when fetching VLAN header bits in the netfilter component of the Linux kernel. Specifically, when the offset and length exceed the boundaries of the ethernet and VLAN header, the length is adjusted to copy bytes within the scratchpad area, and remaining bytes are copied directly from the skbuff data area. The problem arises from using an incorrect arithmetic operator, which is fixed by subtracting the size of the VLAN header in the case of double-tagged packets.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALSA-2025_16880

BDU:2025-06025

CVE-2023-53033

OPENSUSE-SU-2025_01633-1

OPENSUSE-SU-2025_1195-1

RHSA-2023:2458

RHSA-2023_2458

SUSE-SU-2025:01633-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1195-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1574-1

SUSE-SU-2025_01633-1

SUSE-SU-2025_1195-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Red Os

Suse

References · 1375

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53033.json · Exploit
• https://git.kernel.org/stable/c/696e1a48b1a1b01edad542a1ef293665864a4dd0 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53033 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53033 · Vendor Advisory
• https://git.kernel.org/stable/c/a8acfe2c6fb99f9375a9325807a179cd8c32e6e3 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-06025 · Security Note
• https://git.kernel.org/stable/c/550efeff989b041f3746118c0ddd863c39ddc1aa · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1574-1 · Vendor Advisory
• https://git.kernel.org/stable/c/76ef74d4a379faa451003621a84e3498044e7aa3 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53033 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53033 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01633-1 · Vendor Advisory