CVE-2019-11477
Integer overflow in TCP_SKB_CB(skb)->tcp_gso_segs
HIGH 7.5EPSS 98.7%
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
- Linux · Linux kernel
- CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS v3.0 UBUNTU
- 7.5 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS v2.0 NVD
- 7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C - EPSS
- 98.75% chance of exploitation in the next 30 days, 100th percentile
- Published
- 2019-06-18
- Updated
- 2024-09-17
Proof-of-concept exploits (1)
- sasqwatch/cve-2019-11477-poc8★ · 2019-07-21
Security advisories
- https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=3b4929f65b0d8249…
- http://packetstormsecurity.com/files/153346/Kernel-Live-Patch-Security-Notice-LSN-0052-1…
- http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1…
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191225-01-kernel-en
- http://www.openwall.com/lists/oss-security/2019/06/20/3
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- http://www.openwall.com/lists/oss-security/2019/07/06/3
- http://www.openwall.com/lists/oss-security/2019/07/06/4
- http://www.openwall.com/lists/oss-security/2019/10/24/1
- http://www.openwall.com/lists/oss-security/2019/10/29/3
- http://www.vmware.com/security/advisories/VMSA-2019-0010.html
- https://access.redhat.com/errata/RHSA-2019:1594
- https://access.redhat.com/errata/RHSA-2019:1602
- https://access.redhat.com/errata/RHSA-2019:1699
- https://access.redhat.com/security/vulnerabilities/tcpsack
- https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf
- Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193
- https://kc.mcafee.com/corporate/index?page=content&id=SB10287
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0006
- https://security.netapp.com/advisory/ntap-20190625-0001
- https://support.f5.com/csp/article/K78234183
- https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanic
- https://www.kb.cert.org/vuls/id/905115
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.synology.com/security/advisory/Synology_SA_19_28
- https://www.us-cert.gov/ics/advisories/icsa-19-253-03