What’s Vulnerable › Vulnerabilities

CVE-2017-7487

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-05-14 · updated 2026-06-17
• Weakness: CWE-416

Description

The ipxitf_ioctl function in net/ipx/af_ipx.c in the Linux kernel through 4.11.1 mishandles reference counts, which allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a failed SIOCGIFADDR ioctl call for an IPX interface.

Affected products

• Debian Linux: 8.0, 9.0
• Linux kernel: before 3.2.89; from 3.3 before 3.16.44; from 3.17 before 3.18.55; from 3.19 before 4.1.41; from 4.2 before 4.4.70; from 4.5 before 4.9.30 — fixed in 3.16.44, 3.18.55, 3.2.89, 4.1.41, 4.11.3, 4.4.70

How to fix

Upgrade to a fixed version: Linux kernel 3.16.44, 3.18.55, 3.2.89, 4.1.41. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee0d8d8482345ff97a75a7d747efc309f13b0d80
• http://www.debian.org/security/2017/dsa-3886
• http://www.securityfocus.com/bid/98439
• http://www.securitytracker.com/id/1039237
• https://bugzilla.redhat.com/show_bug.cgi?id=1447734
• https://github.com/torvalds/linux/commit/ee0d8d8482345ff97a75a7d747efc309f13b0d80
• https://patchwork.ozlabs.org/patch/757549/
• https://source.android.com/security/bulletin/2017-09-01
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee0d8d8482345ff97a75a7d747efc309f13b0d80
• http://www.debian.org/security/2017/dsa-3886
• http://www.securityfocus.com/bid/98439
• http://www.securitytracker.com/id/1039237

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