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Saint SACK Panic
Hagiography in preparation at the scriptorium.
Feast day June 17
Technical record
- Disclosed on
- June 17 2019
- CVE
- CVE-2019-11477
- CVSS
- 7.5
- Product
- Linux · Linux kernel
Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). 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 commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.
Sources: github.com