NULL pointer dereference in Linux Kernel
CVE-2021-3659
A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.
EPSS: 0.003 (18.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux Linux_kernel
- Fedoraproject Fedora — versions 34
- Redhat Codeready_linux_builder
- Redhat Enterprise_linux — versions 7.0, 8.0
- Redhat Enterprise_linux_eus — versions 8.6
- Redhat Enterprise_linux_for_ibm_z_systems — versions 8.0
- Redhat Enterprise_linux_for_ibm_z_systems_eus — versions 8.6
- Redhat Enterprise_linux_for_power_little_endian — versions 8.0
- Redhat Enterprise_linux_for_power_little_endian_eus — versions 8.6
- Redhat Enterprise_linux_for_real_time — versions 8.0
Weakness classification (CWE)
References
- secalert@redhat.com (Patch, x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-3659?
- CVE-2021-3659 is a medium-severity vulnerability in Linux Kernel, classified under CWE-252. CVSS score: 5.5/10. Published 2022-08-22.
- How severe is CVE-2021-3659?
- Medium severity. CVSS v3 base score is 5.5 out of 10.