Description
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.
References (6)
Core 6
Core References
Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/12/23/10
Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2
Mailing List, Patch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf6531d98190fa2cf92a6d8bbc8af0a4740a223c
Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/cf6531d98190fa2cf92a6d8bbc8af0a4740a223c
Third Party Advisory
https://www.secpod.com/blog/zero-day-server-message-block-smb-server-in-linux-kernel-5-15-has-a-critical-vulnerability-patch-ksmbd-immediately/
Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-22-1690/
Scores
CVSS v3
9.8
EPSS
0.0063
EPSS Percentile
70.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (1)
linux/linux_kernel
5.15 - 5.15.61
Published
Dec 23, 2022
Tracked Since
Feb 18, 2026