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5.3 Medium

CVE-2019-11478 Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be…

Description

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. 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 f070ef2ac66716357066b683fb0baf55f8191a2e.

Affected products and versions

Product Affected versions Fixed in
Linux Kernel 5.1 5.1 → < 5.1.11 5.1.11
Linux Kernel 4.19 4.19 → < 4.19.52 4.19.52
Linux Kernel 4.14 4.14 → < 4.14.127 4.14.127
Linux Kernel 4.9 4.9 → < 4.9.182 4.9.182
Linux Kernel 4.4 4.4 → < 4.4.182 4.4.182

References

Timeline

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