DEBIAN-CVE-2021-47013
- Source
- https://security-tracker.debian.org/tracker/CVE-2021-47013
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47013.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-47013
- Upstream
- Published
- 2024-02-28T09:15:38Z
- Modified
- 2025-09-25T22:40:28Z
- 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: net:emac/emac-mac: Fix a use after free in emacmactxbufsend In emacmactxbufsend, it calls emactxfilltpd(..,skb,..). If some error happens in emactxfilltpd(), the skb will be freed via devkfreeskb(skb) in error branch of emactxfilltpd(). But the freed skb is still used via skb->len by netdevsentqueue(,skb->len). As i observed that emactxfilltpd() haven't modified the value of skb->len, thus my patch assigns skb->len to 'len' before the possible free and use 'len' instead of skb->len later.
- 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