Vulnerability Description
In the Linux kernel before 5.3.4, fib6_rule_lookup in net/ipv6/ip6_fib.c mishandles the RT6_LOOKUP_F_DST_NOREF flag in a reference-count decision, leading to (for example) a crash that was identified by syzkaller, aka CID-7b09c2d052db.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.3.4 |
Related Weaknesses (CWE)
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4Mailing ListVendor Advisory
- https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fPatchThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200313-0003/
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4Mailing ListVendor Advisory
- https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fPatchThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200313-0003/
FAQ
What is CVE-2019-20422?
CVE-2019-20422 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel before 5.3.4, fib6_rule_lookup in net/ipv6/ip6_fib.c mishandles the RT6_LOOKUP_F_DST_NOREF flag in a reference-count decision, leading to (for example) a crash that was identified ...
How severe is CVE-2019-20422?
CVE-2019-20422 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-20422?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.