CVE-2021-38208
lowpriority · track · 22EPSS 0.005 · 42 %ileEURUUSEPSS · scored 2026-10-27
net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–5.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (15)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (26)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2021/08/17/1cnnvd
- http://www.openwall.com/lists/oss-security/2021/08/17/2cnnvd
- http://www.openwall.com/lists/oss-security/2021/08/24/2cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=1992810cnnvd
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10cnnvd
- https://github.com/torvalds/linux/commit/4ac06a1e013cf5fdd963317ffd3b968560f33bbacnnvd
- https://packetstormsecurity.com/files/163905/Ubuntu-Security-Notice-USN-5050-1.htmlcnnvd
- https://vigilance.fr/vulnerability/Linux-kernel-NULL-pointer-dereference-via-net-nfc-llcp-sock-c-36078cnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan