CVE-2017-18224

Description

In the Linux kernel before 4.15, fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode, which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.

Category

4.7
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory debian.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f patch vendor advisory
https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f third party advisory patch
https://www.debian.org/security/2018/dsa-4188 vendor advisory
http://www.securityfocus.com/bid/103353 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-18224?
CVE-2017-18224 has been scored as a medium severity vulnerability.
How to fix CVE-2017-18224?
To fix CVE-2017-18224, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-18224 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-18224 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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