7.8

CVE-2021-47357

atm: iphase: fix possible use-after-free in ia_module_exit()

In the Linux kernel, the following vulnerability has been resolved:

atm: iphase: fix possible use-after-free in ia_module_exit()

This module's remove path calls del_timer(). However, that function
does not wait until the timer handler finishes. This means that the
timer handler may still be running after the driver's remove function
has finished, which would result in a use-after-free.

Fix by calling del_timer_sync(), which makes sure the timer handler
has finished, and unable to re-schedule itself.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 4.4.276
Linux ≫ Linux Kernel Version >= 4.5 < 4.9.276
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.240
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.198
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.133
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.51
Linux ≫ Linux Kernel Version >= 5.11 < 5.12.18
Linux ≫ Linux Kernel Version >= 5.13 < 5.13.3
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.157
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/1c72e6ab66b9598cac741ed397438a52065a8f1f
Patch
https://git.kernel.org/stable/c/89ce0b0747f319eb70f85bc820dcc43cebbd5417
Patch
https://git.kernel.org/stable/c/9e161687855175334ca93c6c3ccb221731194479
Patch
https://git.kernel.org/stable/c/a832ee2f2145f57443b2d565f8cb5490e8339f42
Patch
https://git.kernel.org/stable/c/b58d246a058ae88484758cd4ab27b3180fd5ecf8
Patch
https://git.kernel.org/stable/c/bcdd2be48edd8c6867fb44112cb8d18086beae29
Patch
https://git.kernel.org/stable/c/c9172498d4d62c9b64e5fb37c1ee0343e65fe51b
Patch
https://git.kernel.org/stable/c/d1fb12412874c94ad037e11d0ecdd1140a439297
Patch
https://git.kernel.org/stable/c/e759ff76ebbbfcdcf83b6634c54dc47828573d8b
Patch