What’s Vulnerable › Vulnerabilities

CVE-2015-1421

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 9.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-03-16 · updated 2026-06-17

Description

Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel before 3.18.8 allows remote attackers to cause a denial of service (slab corruption and panic) or possibly have unspecified other impact by triggering an INIT collision that leads to improper handling of shared-key data.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 14.10
• Debian Linux: 7.0, 8.0
• Linux kernel: from 2.6.24 before 3.2.67; from 3.3 before 3.4.107; from 3.5 before 3.10.70; from 3.11 before 3.12.38; from 3.13 before 3.14.34; from 3.15 before 3.16.35 — fixed in 3.10.70, 3.12.38, 3.14.34, 3.16.35, 3.18.8, 3.2.67

How to fix

Upgrade to a fixed version: Linux kernel 3.10.70, 3.12.38, 3.14.34, 3.16.35. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=600ddd6825543962fb807884169e57b580dba208
• http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
• http://rhn.redhat.com/errata/RHSA-2015-0726.html
• http://rhn.redhat.com/errata/RHSA-2015-0751.html
• http://rhn.redhat.com/errata/RHSA-2015-0782.html
• http://rhn.redhat.com/errata/RHSA-2015-0864.html
• http://rhn.redhat.com/errata/RHSA-2015-1082.html
• http://www.debian.org/security/2015/dsa-3170
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.8
• http://www.openwall.com/lists/oss-security/2015/01/29/15
• http://www.securityfocus.com/bid/72356

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