CVE-2022-47939

Published on: Not Yet Published

Last Modified on: 01/23/2023 06:55:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Certain versions of Linux Kernel from Linux contain the following vulnerability:

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2_TREE_DISCONNECT.

  • CVE-2022-47939 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as CRITICAL severity.

CVSS3 Score: 9.8 - CRITICAL

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVE References

Description Tags Link
ZDI-22-1690 | Zero Day Initiative www.zerodayinitiative.com
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URL Logo MISC www.zerodayinitiative.com/advisories/ZDI-22-1690/
kernel/git/torvalds/linux.git - Linux kernel source tree git.kernel.org
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URL Logo MISC git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf6531d98190fa2cf92a6d8bbc8af0a4740a223c
oss-security - Re: Details on this supposed Linux Kernel ksmbd RCE www.openwall.com
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URL Logo MLIST [oss-security] 20221223 Re: Details on this supposed Linux Kernel ksmbd RCE
ksmbd: fix use-after-free bug in smb2_tree_disconect · torvalds/[email protected] · GitHub github.com
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URL Logo MISC github.com/torvalds/linux/commit/cf6531d98190fa2cf92a6d8bbc8af0a4740a223c
cdn.kernel.org
text/plain
URL Logo MISC cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2

Related QID Numbers

  • 904770 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (12094)
  • 905023 Common Base Linux Mariner (CBL-Mariner) Security Update for livepatch-5.15.48.1-4.cm2 (12526)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
LinuxLinux KernelAllAllAllAll
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2022-47939 : An issue was discovered in ksmbd in the #Linux #kernel before 5.19.2. fs/ksmbd/smb2pdu.c has a use… twitter.com/i/web/status/1… 2022-12-23 16:07:26
Twitter Icon @Securityblog Bug 1206654 – VUL-0: CVE-2022-47939: kernel: ksmbd: remote code execution due to use after free ZDI-22-1690 bugzilla.suse.com/show_bug.cgi?i… 2022-12-23 16:41:27
Twitter Icon @Junior_Baines This has been assigned CVE-2022-47939 - seclists.org/oss-sec/2022/q… 2022-12-23 17:16:36
Reddit Logo Icon /r/netcve CVE-2022-47939 2022-12-23 17:39:31
Reddit Logo Icon /r/NAScompares [QNAP VULNERABILITY] Vulnerability in Linux Kernel... 2022-12-29 00:45:45
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