DEBIAN-CVE-2021-47012
- Source
- https://security-tracker.debian.org/tracker/CVE-2021-47012
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47012.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-47012
- Upstream
- Published
- 2024-02-28T09:15:38Z
- Modified
- 2025-09-25T22:40:23Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix a use after free in siwallocmr Our code analyzer reported a UAF. In siwallocmr(), it calls siwmraddmem(mr,..). In the implementation of siwmraddmem(), mem is assigned to mr->mem and then mem is freed via kfree(mem) if xaalloccyclic() failed. Here, mr->mem still point to a freed object. After, the execution continue up to the errout branch of siwallocmr, and the freed mr->mem is used in siwmrdropmem(mr). My patch moves "mr->mem = mem" behind the if (xaalloccyclic(..)<0) {} section, to avoid the uaf.
- 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
Debian:14 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source