CVE-2021-47232
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: j1939: fix Use-after-Free, hold skb ref while in use
In the Linux kernel, the following vulnerability has been resolved: can: j1939: fix Use-after-Free, hold skb ref while in use This patch fixes a Use-after-Free found by the syzbot. The problem is that a skb is taken from the per-session skb queue, without incrementing the ref count. This leads to a Use-after-Free if the skb is taken concurrently from the session queue due to a CTS.
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) |
|---|---|---|---|---|---|
| 9d71dd0c70099914fcd063135da3c580865e924c | affected | git | 22cba878abf646cd3a02ee7c8c2cef7afe66a256 | Unavailable | None listed |
| 9d71dd0c70099914fcd063135da3c580865e924c | affected | git | 509ab6bfdd0c76daebbad0f0af07da712116de22 | Unavailable | None listed |
| 9d71dd0c70099914fcd063135da3c580865e924c | affected | git | 1071065eeb33d32b7d98c2ce7591881ae7381705 | Unavailable | None listed |
| 9d71dd0c70099914fcd063135da3c580865e924c | affected | git | 2030043e616cab40f510299f09b636285e0a3678 | 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) |
|---|---|---|---|---|---|
| 5.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.4 | Unavailable | None listed |
| 5.4.128 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.46 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.12.13 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |