CVE-2021-47520
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: pch_can: pch_can_rx_normal: fix use after free
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.
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) |
|---|---|---|---|---|---|
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | bafe343a885c70dddf358379cf0b2a1c07355d8d | Unavailable | None listed |
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | 3a3c46e2eff0577454860a203be1a8295f4acb76 | Unavailable | None listed |
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | affbad02bf80380a7403885b9fe4a1587d1bb4f3 | Unavailable | None listed |
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | 3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa | Unavailable | None listed |
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | abb4eff3dcd2e583060082a18a8dbf31f02689d4 | Unavailable | None listed |
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | 703dde112021c93d6e89443c070e7dbd4dea612e | Unavailable | None listed |
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | 6c73fc931658d8cbc8a1714b326cb31eb71d16a7 | Unavailable | None listed |
| b21d18b51b31a24d17f883b678432fbdee3d5675 | affected | git | 94cddf1e9227a171b27292509d59691819c458db | 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) |
|---|---|---|---|---|---|
| 2.6.37 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.37 | Unavailable | None listed |
| 4.4.295 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.293 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.258 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.221 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.165 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.85 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.8 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.16 | unaffected | original_commit_for_fix | Unavailable | * | None listed |