CVE-2022-49305
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
drivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop()
In the Linux kernel, the following vulnerability has been resolved: drivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop() There is a deadlock in ieee80211_beacons_stop(), which is shown below: (Thread 1) | (Thread 2) | ieee80211_send_beacon() ieee80211_beacons_stop() | mod_timer() spin_lock_irqsave() //(1) | (wait a time) ... | ieee80211_send_beacon_cb() del_timer_sync() | spin_lock_irqsave() //(2) (wait timer to stop) | ... We hold ieee->beacon_lock in position (1) of thread 1 and use del_timer_sync() to wait timer to stop, but timer handler also need ieee->beacon_lock in position (2) of thread 2. As a result, ieee80211_beacons_stop() will block forever. This patch extracts del_timer_sync() from the protection of spin_lock_irqsave(), which could let timer handler to obtain the needed lock.
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) |
|---|---|---|---|---|---|
| 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 | affected | git | b465bb2ebf666116c1ac745cb80c65154dc0d27e | Unavailable | None listed |
| 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 | affected | git | 1fbe033c52480f7954c057510040fa6286c4ea25 | Unavailable | None listed |
| 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 | affected | git | 66f769762f65d957f688f3258755c6ec410bf710 | Unavailable | None listed |
| 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 | affected | git | 042915c1bfedd684c1d98a841794ee203200571a | Unavailable | None listed |
| 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 | affected | git | ffc9cab7243f8151be37966301307bfd3cda2db3 | Unavailable | None listed |
| 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 | affected | git | b34cb54923a6e5ddefbaf358c85c922c6ab456e2 | Unavailable | None listed |
| 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 | affected | git | 806c7b53414934ba2a39449b31fd1a038e500273 | 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) |
|---|---|---|---|---|---|
| 2.6.33 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.33 | Unavailable | None listed |
| 4.19.247 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.198 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.122 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.47 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.17.15 | unaffected | semver | Unavailable | 5.17.* | None listed |
| 5.18.4 | unaffected | semver | Unavailable | 5.18.* | None listed |
| 5.19 | unaffected | original_commit_for_fix | Unavailable | * | None listed |