fkie_cve-2022-49053
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-03-24 17:43
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: tcmu: Fix possible page UAF
tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not
take refcount properly and just returns page pointer. When
tcmu_try_get_data_page() returns, the returned page may have been freed by
tcmu_blocks_release().
We need to get_page() under cmdr_lock to avoid concurrent
tcmu_blocks_release().
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 | 5.18 |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: tcmu: Fix possible page UAF\n\ntcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not\ntake refcount properly and just returns page pointer. When\ntcmu_try_get_data_page() returns, the returned page may have been freed by\ntcmu_blocks_release().\n\nWe need to get_page() under cmdr_lock to avoid concurrent\ntcmu_blocks_release()."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() busca p\u00e1ginas bajo cmdr_lock, pero no toma el recuento de referencias correctamente y solo devuelve el puntero de p\u00e1gina. Cuando tcmu_try_get_data_page() regresa, la p\u00e1gina devuelta puede haber sido liberada por tcmu_blocks_release(). Necesitamos get_page() bajo cmdr_lock para evitar tcmu_blocks_release() concurrente."
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"id": "CVE-2022-49053",
"lastModified": "2025-03-24T17:43:58.983",
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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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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