CVE-2021-32606

Description

In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.openwall.com/lists/oss-security/2021/05/11/16 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2021/05/12/1 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2021/05/13/2 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2021/05/14/1 third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/ vendor advisory
http://www.openwall.com/lists/oss-security/2021/05/28/1 mailing list third party advisory patch
https://security.netapp.com/advisory/ntap-20210625-0001/ third party advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b17c400aeb44daf041627722581ade527bb3c1d

Frequently Asked Questions

What is the severity of CVE-2021-32606?
CVE-2021-32606 has been scored as a high severity vulnerability.
How to fix CVE-2021-32606?
To fix CVE-2021-32606, 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-2021-32606 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-32606 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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