Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: canonical
Published: 2019-06-18T23:34:51.124134Z
Updated: 2024-09-16T23:22:00.170Z
Reserved: 2019-04-23T00:00:00
Link: CVE-2019-11479
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-06-19T00:15:12.767
Modified: 2024-11-21T04:21:09.880
Link: CVE-2019-11479
Redhat