Vulnerability 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.)
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.11, < 5.12.9 |
| Fedoraproject | Fedora | 32 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/05/12/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/13/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/14/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/28/1Mailing ListPatchThird Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b17c
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.netapp.com/advisory/ntap-20210625-0001/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/05/11/16Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/13/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/14/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/28/1Mailing ListPatchThird Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b17c
FAQ
What is CVE-2021-32606?
CVE-2021-32606 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 IS...
How severe is CVE-2021-32606?
CVE-2021-32606 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32606?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora.