Published: 23/12/2022 Updated: 30/12/2022

CVSS v3 Base Score: 8.1 | Impact Score: 5.2 | Exploitability Score: 2.8

VMScore: 0

An issue exists in ksmbd in the Linux kernel 5.15 up to and including 5.18 prior to 5.18.18. fs/ksmbd/smb2pdu.c lacks length validation in the non-padding case in smb2_write.

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linux linux kernel

DescriptionThe MITRE CVE dictionary describes this issue as: An issue was discovered in ksmbd in the Linux kernel 515 through 518 before 51818 fs/ksmbd/smb2pduc lacks length validation in the non-padding case in smb2_write ...

smb2_write() and smb2_write_pipe do not avlidate the length when no padding is used ...

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CWE-125 https://github.com/torvalds/linux/commit/158a66b245739e15858de42c0ba60fcf3de9b8e6 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=158a66b245739e15858de42c0ba60fcf3de9b8e6 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18 http://www.openwall.com/lists/oss-security/2022/12/23/10 https://nvd.nist.gov https://access.redhat.com/security/cve/cve-2022-47940 https://support.broadcom.com/external/content/SecurityAdvisories/0/21772

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CVE-2022-47940

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