CVE-2017-14497

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-09-15 · updated 2026-06-17
Weakness: CWE-119

Description

The tpacket_rcv function in net/packet/af_packet.c in the Linux kernel before 4.13 mishandles vnet headers, which might allow local users to cause a denial of service (buffer overflow, and disk and memory corruption) or possibly have unspecified other impact via crafted system calls.

Affected products

Debian Linux: 8.0, 9.0
Linux kernel: from 4.6 before 4.9.51; from 4.10 before 4.12.14 — fixed in 4.12.14, 4.9.51

How to fix

Upgrade to a fixed version: Linux kernel 4.12.14, 4.9.51. Check the vendor advisory for mitigations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=edbd58be15a957f6a760c4a514cd475217eb97fd
http://seclists.org/oss-sec/2017/q3/476
http://www.debian.org/security/2017/dsa-3981
http://www.securityfocus.com/bid/100871
http://www.securitytracker.com/id/1039371
http://www.securitytracker.com/id/1040106
https://bugzilla.redhat.com/show_bug.cgi?id=1492593
https://github.com/torvalds/linux/commit/edbd58be15a957f6a760c4a514cd475217eb97fd
https://marc.info/?l=linux-kernel&m=150394500728906&w=2
https://marc.info/?t=150394517700001&r=1&w=2
https://source.android.com/security/bulletin/2018-01-01
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=edbd58be15a957f6a760c4a514cd475217eb97fd

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