What is CVE-2023-53033?

CVE-2023-53033 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-03-27.

How severe is CVE-2023-53033?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linux

CVE-2023-53033

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits If the offset + length goes over the ethernet + vlan header, then the length is adjusted to copy the bytes that are within the boundaries of the vlan_ethhdr scratchpad area. The remaining bytes beyond ethernet + vlan header are copied directly from the skbuff data area. Fix incorrect arithmetic operator: subtract, not add, the size of the vlan header in case of double-tagged packets to adjust the length accordingly to address CVE-2023-0179.

EPSS: 0.002 (7.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions f6ae9f120dada00abfb47313364c35118469455f, 5.5, 0
Linux Linux_kernel — versions 6.2

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2023-53033?: CVE-2023-53033 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-03-27.
How severe is CVE-2023-53033?: High severity. CVSS v3 base score is 7.8 out of 10.