CVE-2024-49988
HIGH severity · CVSS 8.8 · Use-after-free
8.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/18f06bacc197d4ac9b518ad1c69999bc3d83e7aa ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/18f06bacc197d4ac9b518ad1c69999bc3d83e7aaPatch
- https://git.kernel.org/stable/c/9fd3cde4628bcd3549ab95061f2bab74d2ed4f3bPatch
- https://git.kernel.org/stable/c/e9dac92f4482a382e8c0fe1bc243da5fc3526b0cPatch
- https://git.kernel.org/stable/c/ee426bfb9d09b29987369b897fe9b6485ac2be27Patch