CVE-2023-4130

Summary

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()

There are multiple smb2_ea_info buffers in FILE_FULL_EA_INFORMATION request from client. ksmbd find next smb2_ea_info using ->NextEntryOffset of current smb2_ea_info. ksmbd need to validate buffer length Before accessing the next ea. ksmbd should check buffer length using buf_len, not next variable. next is the start offset of current ea that got from previous ea.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < aeb974907642be095e38ecb1a400ca583958b2b0affected
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < f339d76a3a972601d0738b881b099d49ebbdc3a2affected
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < 4bf629262f9118ee91b1c3a518ebf2b3bcb22180affected
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf < 79ed288cef201f1f212dfb934bcaac75572fb8f6affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.127 <= 5.15.*unaffected
LinuxLinux6.1.46 <= 6.1.*unaffected
LinuxLinux6.4.11 <= 6.4.*unaffected
LinuxLinux6.5 <= *unaffected

Weaknesses

References