CVEvulnerability
CVE-2019-20422
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-01-27
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-755
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.
Affected configurations
• linux linux kernel (< 5.3.4)
Related
Weakness · CWE (1)
- CWE-755 Improper Handling of Exceptional Conditions weakness
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 Mailing List, Vendor Advisory
- https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200313-0003/ security.netapp.com
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 Mailing List, Vendor Advisory
- https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200313-0003/ security.netapp.com