CVE-2022-49497: net: remove two BUG() from skb_checksum_help()
First published: Wed Feb 26 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | <5.10.121 | |
| Linux Kernel | >=5.11<5.15.46 | |
| Linux Kernel | >=5.16<5.17.14 | |
| Linux Kernel | >=5.18<5.18.3 |
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Reference Links
- https://git.kernel.org/stable/c/312c43e98ed190bd8fd7a71a0addf9539d5b8ab1
- https://git.kernel.org/stable/c/6320ae1b5876c30bf98203b6a5abe8b5c45e6a04
- https://git.kernel.org/stable/c/d5281245f3502e960cb6b89348767b935379cee3
- https://git.kernel.org/stable/c/b1320c9a4d30ff54b824a8ad6036e0b5fb4c5e73
- https://git.kernel.org/stable/c/d7ea0d9df2a6265b2b180d17ebc64b38105968fc
Frequently Asked Questions
What is the severity of CVE-2022-49497?
CVE-2022-49497 is classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2022-49497?
To address CVE-2022-49497, you should update your Linux kernel to a version that includes the fix, specifically versions above 5.10.121, 5.15.46, 5.17.14, or 5.18.3.
Which versions of the Linux kernel are affected by CVE-2022-49497?
CVE-2022-49497 affects Linux kernel versions below 5.10.121, between 5.11 and 5.15.46, between 5.16 and 5.17.14, and between 5.18 and 5.18.3.
What components are impacted by CVE-2022-49497?
CVE-2022-49497 impacts the skb_checksum_help() function within the Linux kernel networking stack.
Is CVE-2022-49497 exploitable?
CVE-2022-49497 could potentially lead to crashes or unstable behavior in systems running vulnerable versions of the Linux kernel.
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