CVE-2021-46905
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)
net: hso: fix NULL-deref on disconnect regression
In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().
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) |
|---|---|---|---|---|---|
| a462067d7c8e6953a733bf5ade8db947b1bb5449 | affected | git | 5871761c5f0f20d6e98bf3b6bd7486d857589554 | Unavailable | None listed |
| 145c89c441d27696961752bf51b323f347601bee | affected | git | 0c71d4c89559f72cec2592d078681a843bce570e | Unavailable | None listed |
| caf5ac93b3b5d5fac032fc11fbea680e115421b4 | affected | git | 24b699bea7553fc0b98dad9d864befb6005ac7f1 | Unavailable | None listed |
| 92028d7a31e55d53e41cff679156b9432cffcb36 | affected | git | 5c17cfe155d21954b4c7e2a78fa771cebcd86725 | Unavailable | None listed |
| 4a2933c88399c0ebc738db39bbce3ae89786d723 | affected | git | d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e | Unavailable | None listed |
| dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac | affected | git | 90642ee9eb581a13569b1c0bd57e85d962215273 | Unavailable | None listed |
| 388d05f70f1ee0cac4a2068fd295072f1a44152a | affected | git | 0f000005da31f6947f843ce6b3e3a960540c6e00 | Unavailable | None listed |
| 8a12f8836145ffe37e9c8733dce18c22fb668b66 | affected | git | 41c44e1f3112d7265dae522c026399b2a42d19ef | Unavailable | None listed |
| 8a12f8836145ffe37e9c8733dce18c22fb668b66 | affected | git | 2ad5692db72874f02b9ad551d26345437ea4f7f3 | Unavailable | None listed |
| 4.19.187 | affected | semver | 4.19.189 | Unavailable | None listed |
| 5.4.112 | affected | semver | 5.4.115 | Unavailable | None listed |
| 5.10.30 | affected | semver | 5.10.33 | Unavailable | None listed |
| 5.11.14 | affected | semver | 5.11.17 | 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) |
|---|---|---|---|---|---|
| 5.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.12 | Unavailable | None listed |
| 4.19.189 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.115 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.33 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.11.17 | unaffected | semver | Unavailable | 5.11.* | None listed |
| 5.12.1 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |