CVE-2020-29660

Public Exploit

Description

A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.

Category

4.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.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/torvalds/linux.git/commit/?id=c8bcd9c5be24fb9e6132e97da5a35e55a83e36b9 exploit patch vendor advisory
http://www.openwall.com/lists/oss-security/2020/12/10/1 mailing list third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/ vendor advisory
https://security.netapp.com/advisory/ntap-20210122-0001/ third party advisory
https://www.debian.org/security/2021/dsa-4843 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html third party advisory mailing list
http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-29660?
CVE-2020-29660 has been scored as a medium severity vulnerability.
How to fix CVE-2020-29660?
To fix CVE-2020-29660, 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-2020-29660 being actively exploited in the wild?
It is possible that CVE-2020-29660 is being exploited or will be exploited in a near future based on public information. 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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