NULL Pointer Dereference Affecting kernel-tools-devel package, versions <0:4.14.192-147.314.amzn2
Threat Intelligence
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Start learning- Snyk IDSNYK-AMZN2-KERNELTOOLSDEVEL-1683214
- published27 Sept 2021
- disclosed10 Mar 2018
Introduced: 10 Mar 2018
CVE-2018-8043 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 kernel-tools-devel to version 0:4.14.192-147.314.amzn2 or higher.
This issue was patched in ALAS2-2020-1480.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools-devel package and not the kernel-tools-devel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
The unimac_mdio_probe function in drivers/net/phy/mdio-bcm-unimac.c in the Linux kernel through 4.15.8 does not validate certain resource availability, which allows local users to cause a denial of service (NULL pointer dereference).
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8043
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
- https://github.com/torvalds/linux/commit/297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
- http://www.securitytracker.com/id/1040749
- https://usn.ubuntu.com/3619-1/
- https://usn.ubuntu.com/3619-2/
- https://usn.ubuntu.com/3630-1/
- https://usn.ubuntu.com/3630-2/
- https://usn.ubuntu.com/3632-1/