CVE-2019-18198

In the Linux kernel before 5.3.4, a reference count usage error in the fib6_rule_suppress() function in the fib6 suppression feature of net/ipv6/fib6_rules.c, when handling the FIB_LOOKUP_NOREF flag, can be exploited by a local attacker to corrupt memory, aka CID-ca7a03c41753.

• CWE-772

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4Release Notes, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca7a03c4175366a92cee0ccc4fec0038c3266e26Patch, Vendor Advisory
• https://github.com/torvalds/linux/commit/ca7a03c4175366a92cee0ccc4fec0038c3266e26Patch, Third Party Advisory
• https://launchpad.net/bugs/1847478Exploit, Issue Tracking, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20191031-0005/Third Party Advisory
• https://usn.ubuntu.com/4161-1/Third Party Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4Release Notes, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca7a03c4175366a92cee0ccc4fec0038c3266e26Patch, Vendor Advisory
• https://github.com/torvalds/linux/commit/ca7a03c4175366a92cee0ccc4fec0038c3266e26Patch, Third Party Advisory
• https://launchpad.net/bugs/1847478Exploit, Issue Tracking, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20191031-0005/Third Party Advisory
• https://usn.ubuntu.com/4161-1/Third Party Advisory

Published

Oct 18, 2019

Last Modified

Jun 17, 2026

Status

Modified

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