CVE-2020-28941

Description

An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-linus&id=d4122754442799187d5d537a9c039a49a67e57f1 patch vendor advisory
https://www.openwall.com/lists/oss-security/2020/11/19/3 mailing list third party advisory patch
https://github.com/torvalds/linux/commit/d4122754442799187d5d537a9c039a49a67e57f1 third party advisory patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4122754442799187d5d537a9c039a49a67e57f1 patch vendor advisory
http://www.openwall.com/lists/oss-security/2020/11/19/5 mailing list third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/ vendor advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-28941?
CVE-2020-28941 has been scored as a medium severity vulnerability.
How to fix CVE-2020-28941?
To fix CVE-2020-28941, 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-2020-28941 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-28941 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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