CVE-2022-47939

Published on: Not Yet Published

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

CVE-2022-47939

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 [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 text/html	MISC www.zerodayinitiative.com/advisories/ZDI-22-1690/
kernel/git/torvalds/linux.git - Linux kernel source tree	git.kernel.org text/html	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 text/html	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 text/html	MISC github.com/torvalds/linux/commit/cf6531d98190fa2cf92a6d8bbc8af0a4740a223c
	cdn.kernel.org text/plain	MISC cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2

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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	Linux	Linux Kernel	All	All	All	All

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:

No vendor comments have been submitted for this CVE

Social Mentions

Source	Title	Posted (UTC)
@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
@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
@Junior_Baines	This has been assigned CVE-2022-47939 - seclists.org/oss-sec/2022/q…	2022-12-23 17:16:36
/r/netcve	CVE-2022-47939	2022-12-23 17:39:31
/r/NAScompares	[QNAP VULNERABILITY] Vulnerability in Linux Kernel...	2022-12-29 00:45:45