CVE-2021-47559
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47559
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47559.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47559
- Related
- Published
- 2024-05-24T15:15:20Z
- Modified
- 2024-09-11T04:41:14.253075Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net/smc: Fix NULL pointer dereferencing in smcvlanby_tcpsk()
Coverity reports a possible NULL dereferencing problem:
in smcvlanbytcpsk(): 6. returnednull: netdevlowergetnext returns NULL (checked 29 out of 30 times). 7. varassigned: Assigning: ndev = NULL return value from netdevlowergetnext. 1623 ndev = (struct netdevice *)netdevlowergetnext(ndev, &lower); CID 1468509 (#1 of 1): Dereference null return value (NULLRETURNS) 8. dereference: Dereferencing a pointer that might be NULL ndev when calling isvlandev. 1624 if (isvlandev(ndev)) {
Remove the manual implementation and use netdevwalkalllowerdev() to iterate over the lower devices. While on it remove an obsolete function parameter comment.
- References
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source