Published: 23/12/2022 Updated: 16/05/2023

CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8

VMScore: 0

An issue exists in ksmbd in the Linux kernel 5.15 up to and including 5.19 prior to 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.

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DescriptionThe MITRE CVE dictionary describes this issue as: An issue was discovered in ksmbd in the Linux kernel 515 through 519 before 5192 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 ...

heap-overflow in set_ntacl_dacl() when setting a malformed file attribute under the label `securityNTACL` using SMB2_SET_INFO_HE followed by SMB2_QUERY_INFO_HE ...

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CWE-787 https://github.com/torvalds/linux/commit/8f0541186e9ad1b62accc9519cc2b7a7240272a7 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f0541186e9ad1b62accc9519cc2b7a7240272a7 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2 http://www.openwall.com/lists/oss-security/2022/12/23/10 https://www.zerodayinitiative.com/advisories/ZDI-22-1688/https://nvd.nist.gov https://access.redhat.com/security/cve/cve-2022-47942 https://support.broadcom.com/external/content/SecurityAdvisories/0/21772

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CVE-2022-47942

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