CVE-2017-10662

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-08-19 · updated 2026-06-17

Description

The sanity_check_raw_super function in fs/f2fs/super.c in the Linux kernel before 4.11.1 does not validate the segment count, which allows local users to gain privileges via unspecified vectors.

Affected products

Linux kernel: before 3.18.53; from 3.19 before 4.1.41; from 4.2 before 4.4.68; from 4.5 before 4.9.28; from 4.10 before 4.10.16; from 4.11 before 4.11.1 — fixed in 3.18.53, 4.1.41, 4.10.16, 4.11.1, 4.4.68, 4.9.28

How to fix

Upgrade to a fixed version: Linux kernel 3.18.53, 4.1.41, 4.10.16, 4.11.1. Check the vendor advisory for mitigations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9dd46188edc2f0d1f37328637860bb65a771124
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.1
http://www.securityfocus.com/bid/100215
https://bugzilla.redhat.com/show_bug.cgi?id=1481146
https://github.com/torvalds/linux/commit/b9dd46188edc2f0d1f37328637860bb65a771124
https://source.android.com/security/bulletin/2017-08-01
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9dd46188edc2f0d1f37328637860bb65a771124
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.1
http://www.securityfocus.com/bid/100215
https://bugzilla.redhat.com/show_bug.cgi?id=1481146
https://github.com/torvalds/linux/commit/b9dd46188edc2f0d1f37328637860bb65a771124
https://source.android.com/security/bulletin/2017-08-01

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