Use-after-free in smb2_is_status_io_timeout()
CVE-2023-1192

6.5MEDIUM

Key Information:

Vendor
Red Hat
Status
Kernel
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
1 November 2023

Summary

A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.

References

https://access.redhat.com/security/cve/CVE-2023-1192
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2154178
issue-trackingx_refsource_REDHAT
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database

Credit

Red Hat would like to thank Pumpkin (@u1f383), working with DEVCORE Internship Program for reporting this issue.
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