VulnerabilityModified
CVE-2019-20422
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.
MEDIUM 5.5EPSS 0.43%
Does this matter?
Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.43% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-755
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4Mailing List, Vendor Advisory
- https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966faPatch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200313-0003/
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4Mailing List, Vendor Advisory
- https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966faPatch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200313-0003/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.