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CVE-2024-50251: netfilter: nft_payload: sanitize offset and length before calling skb_checksum()

6.2 CVSS

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_payload: sanitize offset and length before calling skb_checksum()

If access to offset + length is larger than the skbuff length, then
skb_checksum() triggers BUG_ON().

skb_checksum() internally subtracts the length parameter while iterating
over skbuff, BUG_ON(len) at the end of it checks that the expected
length to be included in the checksum calculation is fully consumed.

Classification

CVE ID: CVE-2024-50251

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.2

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

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.6% (probability of being exploited)

EPSS Percentile: 68.5% (scored less or equal to compared to others)

EPSS Date: 2025-06-02 (when was this score calculated)

References

Timeline

2025-05-04 10:40:22 UTC
CVE

netfilter: nft_payload: sanitize offset and length before calling skb_checksum()