What’s Vulnerable › Vulnerabilities

CVE-2017-8890

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-05-10 · updated 2026-06-17
• Weakness: CWE-415

Description

The inet_csk_clone_lock function in net/ipv4/inet_connection_sock.c in the Linux kernel through 4.10.15 allows attackers to cause a denial of service (double free) or possibly have unspecified other impact by leveraging use of the accept system call.

Affected products

• Debian Linux: 8.0, 9.0
• Linux kernel: before 3.2.89; from 3.3 before 3.10.106; from 3.11 before 3.16.44; from 3.17 before 3.18.56; from 3.19 before 4.1.42; from 4.2 before 4.4.71 — fixed in 3.10.106, 3.16.44, 3.18.56, 3.2.89, 4.1.42, 4.11.4

How to fix

Upgrade to a fixed version: Linux kernel 3.10.106, 3.16.44, 3.18.56, 3.2.89. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=657831ffc38e30092a2d5f03d385d710eb88b09a
• http://www.debian.org/security/2017/dsa-3886
• http://www.securityfocus.com/bid/98562
• 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/657831ffc38e30092a2d5f03d385d710eb88b09a
• https://source.android.com/security/bulletin/2017-09-01
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=657831ffc38e30092a2d5f03d385d710eb88b09a
• http://www.debian.org/security/2017/dsa-3886
• http://www.securityfocus.com/bid/98562

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