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Saint PwnEscape
Hagiography in preparation at the scriptorium.
Feast day October 14
Technical record
- Disclosed on
- October 14 2026
- CVE
- CVE-2026-99999
- CVSS
- 9.3
- Product
- Linux · Linux
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.
Sources: pwn.ai
Canonized during the vacant see