CVE-2017-17450

7.8 highEPSS 0.4%

net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.

Severity

CVSS 3.0

7.8 high

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
CWE: CWE-862
Published: 2017-12-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

linux:linux_kernel

References

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
http://www.securityfocus.com/bid/102110
https://lkml.org/lkml/2017/12/5/982
https://usn.ubuntu.com/3583-1/
https://usn.ubuntu.com/3583-2/

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