Description
The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5 ↗
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9 ↗
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html ↗
- https://www.debian.org/security/2022/dsa-5173 ↗
- https://arxiv.org/abs/2209.12993 ↗
- https://github.com/0xkol/rfc6056-device-tracker ↗
- https://cert-portal.siemens.com/productcert/html/ssa-419740.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html ↗