high8.8
CVE-2021-47668
In the Linux kernel, the following vulnerability has been resolved: can: dev: can_restart: fix use after free bug After calling netif_rx_ni(skb), dereferencing…
Impact
In the Linux kernel, the following vulnerability has been resolved: can: dev: can_restart: fix use after free bug After calling netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the netif_rx_ni() in: stats->rx_bytes += cf->len; Reordering the lines solves the issue.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 2.6.31 before 4.4.254 from 4.5 before 4.9.254 from 4.10 before 4.14.218 from 4.15 before 4.19.171 from 4.20 before 5.4.93 from 5.5 before 5.10.11 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/03f16c5075b22c8902d2af739969e878b0879c94
- https://git.kernel.org/stable/c/08ab951787098ae0b6c0364aeea7a8138226f234
- https://git.kernel.org/stable/c/260925a0b7d2da5449f8ecfd02c1405e0c8a45b8
- https://git.kernel.org/stable/c/593c072b7b3c4d7044416eb039d9ad706bedd67a
- https://git.kernel.org/stable/c/92668d28c7e6a7a2ba07df287669ffcdf650c421
- https://git.kernel.org/stable/c/ac48ef15826e83f4206c47add61072e8fc76d328
- https://git.kernel.org/stable/c/bbc6847b9b8978b520f62fbc7c68c54ef0f8d282