CVE-2023-39176Medium· 5.8▾ Midnight0dayA flaw was found within the parsing of SMB2 requests that have a transform header in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an alloc…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 31.9 · likelihood 0.1 · exploitation 25
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.7%
A flaw was found within the parsing of SMB2 requests that have a transform header in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.
linux_kernel >= 5.15.121, < 5.15.127linux_kernel >= 6.1.36, < 6.1.46linux_kernel >= 6.3, < 6.3.10linux_kernel >= 6.4, < 6.4.11Upgrade past the affected range:
linux_kernel 6.4.11Connected by shared product, vendor, weakness, or advisory.
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