AZL-108243
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-108243.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-108243
- Upstream
- Published
- 2026-10-15T13:17:14Z
- Modified
- 2026-10-19T05:35:54Z
- Summary
- CVE-2026-99999 affecting package kernel 6.6.157.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ipv4: validate checksum_start before completing checksum
If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network header and cause a bunch of mischief.
This was discovered and reported by Paulos, and has been reporoduced by others independently since.
We really shouldn't allow such packets in, but as a defence in depth measure, let's also check before we complete the checksum.
A more complete validation at input is forthcoming, but needs more work.
- References