CVE-2022-49305
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49305
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49305.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49305
- Related
- Published
- 2025-02-26T07:01:07Z
- Modified
- 2025-04-14T20:59:04.753285Z
- Downstream
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drivers: staging: rtl8192u: Fix deadlock in ieee80211beaconsstop()
There is a deadlock in ieee80211beaconsstop(), which is shown below:
(Thread 1) | (Thread 2) | ieee80211sendbeacon() ieee80211beaconsstop() | modtimer() spinlockirqsave() //(1) | (wait a time) ... | ieee80211sendbeaconcb() deltimersync() | spinlockirqsave() //(2) (wait timer to stop) | ...
We hold ieee->beaconlock in position (1) of thread 1 and use deltimersync() to wait timer to stop, but timer handler also need ieee->beaconlock in position (2) of thread 2. As a result, ieee80211beaconsstop() will block forever.
This patch extracts deltimersync() from the protection of spinlockirqsave(), which could let timer handler to obtain the needed lock.
- References
-
- https://git.kernel.org/stable/c/042915c1bfedd684c1d98a841794ee203200571a
- https://git.kernel.org/stable/c/1fbe033c52480f7954c057510040fa6286c4ea25
- https://git.kernel.org/stable/c/66f769762f65d957f688f3258755c6ec410bf710
- https://git.kernel.org/stable/c/806c7b53414934ba2a39449b31fd1a038e500273
- https://git.kernel.org/stable/c/b34cb54923a6e5ddefbaf358c85c922c6ab456e2
- https://git.kernel.org/stable/c/b465bb2ebf666116c1ac745cb80c65154dc0d27e
- https://git.kernel.org/stable/c/ffc9cab7243f8151be37966301307bfd3cda2db3
- https://security-tracker.debian.org/tracker/CVE-2022-49305
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.10.127-1
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source