CVE-2021-47334
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)
misc/libmasm/module: Fix two use after free in ibmasm_init_one
In the Linux kernel, the following vulnerability has been resolved: misc/libmasm/module: Fix two use after free in ibmasm_init_one In ibmasm_init_one, it calls ibmasm_init_remote_input_dev(). Inside ibmasm_init_remote_input_dev, mouse_dev and keybd_dev are allocated by input_allocate_device(), and assigned to sp->remote.mouse_dev and sp->remote.keybd_dev respectively. In the err_free_devices error branch of ibmasm_init_one, mouse_dev and keybd_dev are freed by input_free_device(), and return error. Then the execution runs into error_send_message error branch of ibmasm_init_one, where ibmasm_free_remote_input_dev(sp) is called to unregister the freed sp->remote.mouse_dev and sp->remote.keybd_dev. My patch add a "error_init_remote" label to handle the error of ibmasm_init_remote_input_dev(), to avoid the uaf bugs.
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) |
|---|---|---|---|---|---|
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | 1512e7dc5eb08b7d92a12e2bfcd9cb8c4a1ec069 | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | 29ba8e2ba89ee2862a26d91204dd5fe77ceee25a | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | 5b06ca113bf197aab2ab61288f42506e0049fbab | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | 481a76d4749ee3a27f902ba213fdcbb4bb39720e | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | 38660031e80eaa6cc9370b031c180612f414b00d | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | b9c87ce3bc6331f82811a8cf8e930423c22523a3 | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | ef1067d2baa847d53c9988510d99fb494de4d12c | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | a7268e8a227d5a4f0bd1584f556246b0224ab274 | Unavailable | None listed |
| 736ce43295682d060f2b93624b4a339f9af6aab1 | affected | git | 7272b591c4cb9327c43443f67b8fbae7657dd9ae | 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) |
|---|---|---|---|---|---|
| 2.6.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.16 | Unavailable | None listed |
| 4.4.276 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.276 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.240 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.198 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.134 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.52 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.12.19 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13.4 | unaffected | semver | Unavailable | 5.13.* | None listed |
| 5.14 | unaffected | original_commit_for_fix | Unavailable | * | None listed |