CVE-2021-47668
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
can: dev: can_restart: fix use after free bug
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 39549eef3587f1c1e8c65c88a2400d10fd30ea17 | affected | git | 260925a0b7d2da5449f8ecfd02c1405e0c8a45b8 | Unavailable | None listed |
| 39549eef3587f1c1e8c65c88a2400d10fd30ea17 | affected | git | bbc6847b9b8978b520f62fbc7c68c54ef0f8d282 | Unavailable | None listed |
| 39549eef3587f1c1e8c65c88a2400d10fd30ea17 | affected | git | 92668d28c7e6a7a2ba07df287669ffcdf650c421 | Unavailable | None listed |
| 39549eef3587f1c1e8c65c88a2400d10fd30ea17 | affected | git | 08ab951787098ae0b6c0364aeea7a8138226f234 | Unavailable | None listed |
| 39549eef3587f1c1e8c65c88a2400d10fd30ea17 | affected | git | ac48ef15826e83f4206c47add61072e8fc76d328 | Unavailable | None listed |
| 39549eef3587f1c1e8c65c88a2400d10fd30ea17 | affected | git | 593c072b7b3c4d7044416eb039d9ad706bedd67a | Unavailable | None listed |
| 39549eef3587f1c1e8c65c88a2400d10fd30ea17 | affected | git | 03f16c5075b22c8902d2af739969e878b0879c94 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.31 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.31 | Unavailable | None listed |
| 4.4.254 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.254 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.218 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.171 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.93 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.11 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.11 | unaffected | original_commit_for_fix | Unavailable | * | None listed |