High severity · published Dec 23, 2022
CVE-2022-47942
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2
8.8
CVSS
3.9%
EPSS
No
On KEV
Description
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is a heap-based buffer overflow in set_ntacl_dacl, related to use of SMB2_QUERY_INFO_HE after a malformed SMB2_SET_INFO_HE command.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.9% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.15 before 5.15.62; 5.16 before 5.18.18; 5.19 before 5.19.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-47942
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-47942
Mailing List
http://www.openwall.com/lists/oss-security/2022/12/23/10
Mailing List
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2
Mailing List
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f0541186e9ad1b62accc9519cc2b7a7240272a7
Patch
https://github.com/torvalds/linux/commit/8f0541186e9ad1b62accc9519cc2b7a7240272a7
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-1688/
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