Unrated severityNVD Advisory· Published Jan 16, 2020· Updated Aug 5, 2024
CVE-2019-18282
CVE-2019-18282
Description
The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.
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Affected products
2- Linux/Linux kerneldescription
- Range: <=5.3.9 (fix in 5.3.10)
Patches
Vulnerability mechanics
References
5- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10mitrex_refsource_MISC
- git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/mitrex_refsource_CONFIRM
- lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlmitremailing-listx_refsource_MLIST
- security.netapp.com/advisory/ntap-20200204-0002/mitrex_refsource_CONFIRM
- www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2omitrex_refsource_MISC
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