Use After Free Affecting kernel package, versions <0:4.14.55-68.37.amzn2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2-KERNEL-1663325
- published27 Sept 2021
- disclosed24 May 2018
Introduced: 24 May 2018
CVE-2018-11412 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 kernel to version 0:4.14.55-68.37.amzn2 or higher.
This issue was patched in ALAS2-2018-1046.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
In the Linux kernel 4.13 through 4.16.11, ext4_read_inline_data() in fs/ext4/inline.c performs a memcpy with an untrusted length value in certain circumstances involving a crafted filesystem that stores the system.data extended attribute value in a dedicated inode.
References
- http://www.securityfocus.com/bid/104291
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11412
- https://www.exploit-db.com/exploits/44832/
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1580
- https://bugzilla.kernel.org/show_bug.cgi?id=199803
- https://access.redhat.com/errata/RHSA-2019:0525
- https://usn.ubuntu.com/3752-1/
- https://usn.ubuntu.com/3752-2/
- https://usn.ubuntu.com/3752-3/