CVE-2014-9428

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-01-02 · updated 2026-06-17
Weakness: CWE-399

Description

The batadv_frag_merge_packets function in net/batman-adv/fragmentation.c in the B.A.T.M.A.N. implementation in the Linux kernel through 3.18.1 uses an incorrect length field during a calculation of an amount of memory, which allows remote attackers to cause a denial of service (mesh-node system crash) via fragmented packets.

Affected products

Linux kernel: from 3.13 before 3.14.30; from 3.15 before 3.16.35; from 3.17 before 3.18.4 — fixed in 3.14.30, 3.16.35, 3.18.4

How to fix

Upgrade to a fixed version: Linux kernel 3.14.30, 3.16.35, 3.18.4. Check the vendor advisory for mitigations.

References

http://bugs.debian.org/774155
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5b6698b0e4a37053de35cc24ee695b98a7eb712b
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html
http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
http://www.openwall.com/lists/oss-security/2014/12/31/7
http://www.spinics.net/lists/netdev/msg309425.html
http://www.ubuntu.com/usn/USN-2515-1
http://www.ubuntu.com/usn/USN-2516-1
http://www.ubuntu.com/usn/USN-2517-1
http://www.ubuntu.com/usn/USN-2518-1
https://github.com/torvalds/linux/commit/5b6698b0e4a37053de35cc24ee695b98a7eb712b

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