CVE-2022-47940
HIGH
8.1
CVSS Score
Published: December 23, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 05:14 AM UTC
1 product affected across 1 vendorLinux Kernel
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Severity
HIGH8.1
Exploit prediction
EPSS 2%
SSVC
No known exploit
Description
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.18 before 5.18.18. fs/ksmbd/smb2pdu.c lacks length validation in the non-padding case in smb2_write.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
5.15 ≤ v < 5.15.1455.16 ≤ v < 5.18.18
Affected range stops below 5.15.145, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.18.18, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/12/23/10Mailing ListPatchVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18Mailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=158a66b245739e15858de42c0ba60fcf3de9b8e6PatchThird Party Advisory
Source: [email protected]
https://github.com/torvalds/linux/commit/158a66b245739e15858de42c0ba60fcf3de9b8e6SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.1HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
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