What’s Vulnerable › Vulnerabilities

CVE-2022-49497: net: remove two BUG() from skb_checksum_help()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: net: remove two BUG() from skb_checksum_help() I have a syzbot report that managed to get a crash in skb_checksum_help() If syzbot can trigger these BUG(), it makes sense to replace them with more friendly WARN_ON_ONCE() since skb_checksum_help() can instead return an error code. Note that syzbot will still crash there, until real bug is fixed.

Affected products

• Linux kernel: before 5.10.121; from 5.11 before 5.15.46; from 5.16 before 5.17.14; from 5.18 before 5.18.3 — fixed in 5.10.121, 5.15.46, 5.17.14, 5.18.3

How to fix

Upgrade to a fixed version: Linux kernel 5.10.121, 5.15.46, 5.17.14, 5.18.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/312c43e98ed190bd8fd7a71a0addf9539d5b8ab1
• https://git.kernel.org/stable/c/6320ae1b5876c30bf98203b6a5abe8b5c45e6a04
• https://git.kernel.org/stable/c/b1320c9a4d30ff54b824a8ad6036e0b5fb4c5e73
• https://git.kernel.org/stable/c/d5281245f3502e960cb6b89348767b935379cee3
• https://git.kernel.org/stable/c/d7ea0d9df2a6265b2b180d17ebc64b38105968fc

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