CVE-2021-47294
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)
netrom: Decrease sock refcount when sock timers expire
In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 ("netrom: switch to sock timer API") switched to use sock timer API. It replaces mod_timer() by sk_reset_timer(), and del_timer() by sk_stop_timer(). Function sk_reset_timer() will increase the refcount of sock if it is called on an inactive timer, hence, in case the timer expires, we need to decrease the refcount ourselves in the handler, otherwise, the sock refcount will be unbalanced and the sock will never be freed.
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) |
|---|---|---|---|---|---|
| ce29e8a259de767f7210d346ad2b031cb8ab2732 | affected | git | 853262355518cd1247515b74e83fabf038aa6c29 | Unavailable | None listed |
| baa9e32336bf6d0d74a7c3486d2a27feaf57cd5f | affected | git | a01634bf91f2b6c42583770eb6815fb6d1e251cf | Unavailable | None listed |
| 0adf571fa34b27bd0b97b408cc0f0dc54b72f0eb | affected | git | 48866fd5c361ea417ed24b43fc2a7dc2f5b060ef | Unavailable | None listed |
| 2c6b572458a9127e8070df13fa7f115c29ab1d92 | affected | git | 9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950 | Unavailable | None listed |
| 63346650c1a94a92be61a57416ac88c0a47c4327 | affected | git | 25df44e90ff5959b5c24ad361b648504a7e39ef3 | Unavailable | None listed |
| 63346650c1a94a92be61a57416ac88c0a47c4327 | affected | git | 6811744bd0efb9e472cb15d066cdb460beb8cb8a | Unavailable | None listed |
| 63346650c1a94a92be61a57416ac88c0a47c4327 | affected | git | bc1660206c3723c37ed4d622ad81781f1e987250 | Unavailable | None listed |
| 63346650c1a94a92be61a57416ac88c0a47c4327 | affected | git | 517a16b1a88bdb6b530f48d5d153478b2552d9a8 | Unavailable | None listed |
| f1d9a1f2ef6ff17293d21d5e6b80e04bea0cf508 | affected | git | Unavailable | Unavailable | None listed |
| 519e8a22a454b1f1baa3a151b184fe51bc18e178 | affected | git | Unavailable | Unavailable | None listed |
| 4.4.173 | affected | semver | 4.4.277 | Unavailable | None listed |
| 4.9.155 | affected | semver | 4.9.277 | Unavailable | None listed |
| 4.14.98 | affected | semver | 4.14.241 | Unavailable | None listed |
| 4.19.20 | affected | semver | 4.19.199 | Unavailable | None listed |
| 3.18.134 | affected | semver | 3.19 | Unavailable | None listed |
| 4.20.7 | affected | semver | 4.21 | 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) |
|---|---|---|---|---|---|
| 5.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.0 | Unavailable | None listed |
| 4.4.277 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.277 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.241 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.199 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.136 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.54 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.13.6 | unaffected | semver | Unavailable | 5.13.* | None listed |
| 5.14 | unaffected | original_commit_for_fix | Unavailable | * | None listed |