CVE-2021-47668
can: dev: can_restart: fix use after free bug
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 17, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 260925a0b7d2da5449f8ecfd02c1405e0c8a45b8 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < bbc6847b9b8978b520f62fbc7c68c54ef0f8d282 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 92668d28c7e6a7a2ba07df287669ffcdf650c421 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 08ab951787098ae0b6c0364aeea7a8138226f234 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < ac48ef15826e83f4206c47add61072e8fc76d328 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 593c072b7b3c4d7044416eb039d9ad706bedd67a 39549eef3587f1c1e8c65c88a2400d10fd30ea17 < 03f16c5075b22c8902d2af739969e878b0879c94
Linux / Linux
2.6.31
References
git.kernel.org: https://git.kernel.org/stable/c/260925a0b7d2da5449f8ecfd02c1405e0c8a45b8 git.kernel.org: https://git.kernel.org/stable/c/bbc6847b9b8978b520f62fbc7c68c54ef0f8d282 git.kernel.org: https://git.kernel.org/stable/c/92668d28c7e6a7a2ba07df287669ffcdf650c421 git.kernel.org: https://git.kernel.org/stable/c/08ab951787098ae0b6c0364aeea7a8138226f234 git.kernel.org: https://git.kernel.org/stable/c/ac48ef15826e83f4206c47add61072e8fc76d328 git.kernel.org: https://git.kernel.org/stable/c/593c072b7b3c4d7044416eb039d9ad706bedd67a git.kernel.org: https://git.kernel.org/stable/c/03f16c5075b22c8902d2af739969e878b0879c94