Vulnerability Details : 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.
Products affected by CVE-2019-20422
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-20422
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-20422
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2019-20422
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-20422
-
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4
Mailing List;Vendor Advisory
-
https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa
ipv6: fix a typo in fib6_rule_lookup() · torvalds/linux@7b09c2d · GitHubPatch;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20200313-0003/
February 2020 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security
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