5.5

CVE-2024-49988

ksmbd: add refcnt to ksmbd_conn struct

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

ksmbd: add refcnt to ksmbd_conn struct

When sending an oplock break request, opinfo->conn is used,
But freed ->conn can be used on multichannel.
This patch add a reference count to the ksmbd_conn struct
so that it can be freed when it is no longer used.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 6.6.55
Linux ≫ Linux Kernel Version >= 6.7 < 6.10.14
Linux ≫ Linux Kernel Version >= 6.11 < 6.11.3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.14
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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/18f06bacc197d4ac9b518ad1c69999bc3d83e7aa
Patch
https://git.kernel.org/stable/c/9fd3cde4628bcd3549ab95061f2bab74d2ed4f3b
Patch
https://git.kernel.org/stable/c/e9dac92f4482a382e8c0fe1bc243da5fc3526b0c
Patch
https://git.kernel.org/stable/c/ee426bfb9d09b29987369b897fe9b6485ac2be27
Patch