CVE-2025-21666
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
vsock: prevent null-ptr-deref in vsock_*[has_data|has_space]
In the Linux kernel, the following vulnerability has been resolved: vsock: prevent null-ptr-deref in vsock_*[has_data|has_space] Recent reports have shown how we sometimes call vsock_*_has_data() when a vsock socket has been de-assigned from a transport (see attached links), but we shouldn't. Previous commits should have solved the real problems, but we may have more in the future, so to avoid null-ptr-deref, we can return 0 (no space, no data available) but with a warning. This way the code should continue to run in a nearly consistent state and have a warning that allows us to debug future problems.
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) |
|---|---|---|---|---|---|
| c0cfa2d8a788fcf45df5bf4070ab2474c88d543a | affected | git | daeac89cdb03d30028186f5ff7dc26ec8fa843e7 | Unavailable | None listed |
| c0cfa2d8a788fcf45df5bf4070ab2474c88d543a | affected | git | 9e5fed46ccd2c34c5fa5a9c8825ce4823fdc853e | Unavailable | None listed |
| c0cfa2d8a788fcf45df5bf4070ab2474c88d543a | affected | git | b52e50dd4fabd12944172bd486a4f4853b7f74dd | Unavailable | None listed |
| c0cfa2d8a788fcf45df5bf4070ab2474c88d543a | affected | git | bc9c49341f9728c31fe248c5fbba32d2e81a092b | Unavailable | None listed |
| c0cfa2d8a788fcf45df5bf4070ab2474c88d543a | affected | git | c23d1d4f8efefb72258e9cedce29de10d057f8ca | Unavailable | None listed |
| c0cfa2d8a788fcf45df5bf4070ab2474c88d543a | affected | git | 91751e248256efc111e52e15115840c35d85abaf | 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) |
|---|---|---|---|---|---|
| 5.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.5 | Unavailable | None listed |
| 5.10.234 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.177 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.127 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.74 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.11 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |