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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2019-11477

Integer overflow in TCP_SKB_CB(skb)->tcp_gso_segs

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Status
Published
Published
Updated
Assigning organization
canonical

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux kernel

  • 4.4 to < 4.4.182affected
  • 4.9 to < 4.9.182affected
  • 4.14 to < 4.14.127affected
  • 4.19 to < 4.19.52affected
  • 5.1 to < 5.1.11affected

References