Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cifs: fix mid leak during reconnection after timeout threshold When the number of responses with status of STATUS_IO_TIMEOUT exceeds a specified threshold (NUM_STATUS_IO_TIMEOUT), we reconnect the connection. But we do not return the mid, or the credits returned for the mid, or reduce the number of in-flight requests. This bug could result in the server->in_flight count to go bad, and also cause a leak in the mids. This change moves the check to a few lines below where the response is decrypted, even of the response is read from the transform header. This way, the code for returning the mids can be reused. Also, the cifs_reconnect was reconnecting just the transport connection before. In case of multi-channel, this may not be what we want to do after several timeouts. Changed that to reconnect the session and the tree too. Also renamed NUM_STATUS_IO_TIMEOUT to a more appropriate name MAX_STATUS_IO_TIMEOUT.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.9.5, < 5.15.150 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/57d25e9905c71133e201f6d06b56a3403d4ad433Patch
- https://git.kernel.org/stable/c/69cba9d3c1284e0838ae408830a02c4a063104bcPatch
- https://git.kernel.org/stable/c/c55901d381a22300c9922170e59704059f50977bPatch
- https://git.kernel.org/stable/c/df31d05f0678cdd0796ea19983a2b93edca18bb0Patch
FAQ
What is CVE-2023-53597?
CVE-2023-53597 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: cifs: fix mid leak during reconnection after timeout threshold When the number of responses with status of STATUS_IO_TIMEOUT excee...
How severe is CVE-2023-53597?
CVE-2023-53597 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-53597?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.