What’s Vulnerable › Vulnerabilities

CVE-2017-9077

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-05-19 · updated 2026-06-17

Description

The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel through 4.11.1 mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890.

Affected products

• Linux kernel: before 3.2.89; from 3.3 before 3.16.44; from 3.17 before 3.18.84; from 3.19 before 4.4.71; from 4.5 before 4.9.31; from 4.10 before 4.11.4 — fixed in 3.16.44, 3.18.84, 3.2.89, 4.11.4, 4.4.71, 4.9.31

How to fix

Upgrade to a fixed version: Linux kernel 3.16.44, 3.18.84, 3.2.89, 4.11.4. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=83eaddab4378db256d00d295bda6ca997cd13a52
• http://www.debian.org/security/2017/dsa-3886
• http://www.securityfocus.com/bid/98583
• https://access.redhat.com/errata/RHSA-2017:1842
• https://access.redhat.com/errata/RHSA-2017:2077
• https://access.redhat.com/errata/RHSA-2017:2669
• https://access.redhat.com/errata/RHSA-2018:1854
• https://github.com/torvalds/linux/commit/83eaddab4378db256d00d295bda6ca997cd13a52
• https://patchwork.ozlabs.org/patch/760370/
• https://source.android.com/security/bulletin/2017-11-01
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=83eaddab4378db256d00d295bda6ca997cd13a52
• http://www.debian.org/security/2017/dsa-3886

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