Back to search
CVE-2021-47520
Published: May 24, 2024
Modified: May 11, 2026
PUBLISHED
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected b21d18b51b31a24d17f883b678432fbdee3d5675 - < bafe343a885c70dddf358379cf0b2a1c07355d8daffected b21d18b51b31a24d17f883b678432fbdee3d5675 - < 3a3c46e2eff0577454860a203be1a8295f4acb76affected b21d18b51b31a24d17f883b678432fbdee3d5675 - < affbad02bf80380a7403885b9fe4a1587d1bb4f3affected b21d18b51b31a24d17f883b678432fbdee3d5675 - < 3e193ef4e0a3f5bf92ede83ef214cb09d01b00aaaffected b21d18b51b31a24d17f883b678432fbdee3d5675 - < abb4eff3dcd2e583060082a18a8dbf31f02689d4+3 more versions |
Linux | Linux | affected 2.6.37unaffected 0 - < 2.6.37unaffected 4.4.295 - <= 4.4.*unaffected 4.9.293 - <= 4.9.*unaffected 4.14.258 - <= 4.14.*+5 more versions |
References
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now