fkie_cve-2022-49258
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-03-25 15:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccree - Fix use after free in cc_cipher_exit()
kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key. But
ctx_p->user.key is still used in the next line, which will lead to a
use after free.
We can call kfree_sensitive() after dev_dbg() to avoid the uaf.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccree - Fix use after free in cc_cipher_exit()\n\nkfree_sensitive(ctx_p-\u003euser.key) will free the ctx_p-\u003euser.key. But\nctx_p-\u003euser.key is still used in the next line, which will lead to a\nuse after free.\n\nWe can call kfree_sensitive() after dev_dbg() to avoid the uaf."
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{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: crypto: ccree - Se corrige el uso despu\u00e9s de liberaci\u00f3n en cc_cipher_exit() kfree_sensitive(ctx_p-\u0026amp;gtuser.key) liberar\u00e1 ctx_p-\u0026amp;gtuser.key. Pero ctx_p-\u0026amp;gtuser.key a\u00fan se usa en la siguiente l\u00ednea, lo que provocar\u00e1 un uso despu\u00e9s de liberaci\u00f3n. Podemos llamar a kfree_sensitive() despu\u00e9s de dev_dbg() para evitar el uaf.\n"
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"id": "CVE-2022-49258",
"lastModified": "2025-03-25T15:23:07.917",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"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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