fkie_cve-2023-52774
Vulnerability from fkie_nvd
Published
2024-05-21 16:15
Modified
2025-09-23 20:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
s390/dasd: protect device queue against concurrent access
In dasd_profile_start() the amount of requests on the device queue are
counted. The access to the device queue is unprotected against
concurrent access. With a lot of parallel I/O, especially with alias
devices enabled, the device queue can change while dasd_profile_start()
is accessing the queue. In the worst case this leads to a kernel panic
due to incorrect pointer accesses.
Fix this by taking the device lock before accessing the queue and
counting the requests. Additionally the check for a valid profile data
pointer can be done earlier to avoid unnecessary locking in a hot path.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.7 | |
| linux | linux_kernel | 6.7 |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: protect device queue against concurrent access\n\nIn dasd_profile_start() the amount of requests on the device queue are\ncounted. The access to the device queue is unprotected against\nconcurrent access. With a lot of parallel I/O, especially with alias\ndevices enabled, the device queue can change while dasd_profile_start()\nis accessing the queue. In the worst case this leads to a kernel panic\ndue to incorrect pointer accesses.\n\nFix this by taking the device lock before accessing the queue and\ncounting the requests. Additionally the check for a valid profile data\npointer can be done earlier to avoid unnecessary locking in a hot path."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: s390/dasd: protege la cola de dispositivos contra el acceso concurrente. En dasd_profile_start() se cuenta la cantidad de solicitudes en la cola de dispositivos. El acceso a la cola de dispositivos no est\u00e1 protegido contra el acceso simult\u00e1neo. Con muchas E/S paralelas, especialmente con dispositivos alias habilitados, la cola de dispositivos puede cambiar mientras dasd_profile_start() accede a la cola. En el peor de los casos, esto provoca un p\u00e1nico en el kernel debido a accesos incorrectos al puntero. Solucione este problema bloqueando el dispositivo antes de acceder a la cola y contando las solicitudes. Adem\u00e1s, la verificaci\u00f3n de un puntero de datos de perfil v\u00e1lido se puede realizar antes para evitar bloqueos innecesarios en una ruta activa."
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"id": "CVE-2023-52774",
"lastModified": "2025-09-23T20:00:36.837",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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