CVE-2021-47583
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)
media: mxl111sf: change mutex_init() location
In the Linux kernel, the following vulnerability has been resolved: media: mxl111sf: change mutex_init() location Syzbot reported, that mxl111sf_ctrl_msg() uses uninitialized mutex. The problem was in wrong mutex_init() location. Previous mutex_init(&state->msg_lock) call was in ->init() function, but dvb_usbv2_init() has this order of calls: dvb_usbv2_init() dvb_usbv2_adapter_init() dvb_usbv2_adapter_frontend_init() props->frontend_attach() props->init() Since mxl111sf_* devices call mxl111sf_ctrl_msg() in ->frontend_attach() internally we need to initialize state->msg_lock before frontend_attach(). To achieve it, ->probe() call added to all mxl111sf_* devices, which will simply initiaize mutex.
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) |
|---|---|---|---|---|---|
| 8572211842afc53c8450fb470f2b8d02ba7592e0 | affected | git | 4b2d9600b31f9ba7adbc9f3c54a068615d27b390 | Unavailable | None listed |
| 8572211842afc53c8450fb470f2b8d02ba7592e0 | affected | git | 96f182c9f48b984447741f054ec301fdc8517035 | Unavailable | None listed |
| 8572211842afc53c8450fb470f2b8d02ba7592e0 | affected | git | b99bdf127af91d53919e96292c05f737c45ea59a | Unavailable | None listed |
| 8572211842afc53c8450fb470f2b8d02ba7592e0 | affected | git | 8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba | Unavailable | None listed |
| 8572211842afc53c8450fb470f2b8d02ba7592e0 | affected | git | 44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f | 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) |
|---|---|---|---|---|---|
| 3.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.7 | Unavailable | None listed |
| 4.19.222 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.168 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.88 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.11 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.16 | unaffected | original_commit_for_fix | Unavailable | * | None listed |