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Linux kernel may lose network packets with async AH encryption
published 5 months ago
Summary
The Linux kernel's handling of a specific network security feature (AH with extended sequence numbers) was incorrect when using asynchronous cryptographic operations, causing packets to be dropped on IPv4 and potentially IPv6. This could disrupt communications that rely on this feature. Updating the kernel to the latest version resolves the issue and restores normal packet flow.
What to do
- Update echo linux to version 6.12.88-1.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Echo | echo | linux |
< 6.12.88-1 Fix: upgrade to 6.12.88-1
|
Original advisory text
ECHO-221f-ac87-073c
References
Timeline
Published28 May 2026
Updated29 May 2026
First seen29 May 2026
Sources
ECHO-221f-ac87-073c · OSV
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