Cette page suit l'état du correctif pour Debian. La vulnérabilité elle-même est décrite sur la page CVE principale.
Voir CVE-2021-47520 →
DEBIAN-CVE-2021-47520
In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_...
Description d'origine
La description telle que publiée par la source (souvent en anglais).
In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb). Reordering the lines solves the issue.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Paquets affectés
Debian:12
linux
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}]
Debian:13
linux
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}]
Debian:14
linux
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}]
Références
- advisory security-tracker.debian.org