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Description

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.

PUBLISHED Reserved 2023-08-03 | Published 2025-08-16 | Updated 2025-08-19 | Assigner Linux

Product status

Default status
unaffected

0626e6641f6b467447c81dd7678a69c66f7746cf before aeb974907642be095e38ecb1a400ca583958b2b0
affected

0626e6641f6b467447c81dd7678a69c66f7746cf before f339d76a3a972601d0738b881b099d49ebbdc3a2
affected

0626e6641f6b467447c81dd7678a69c66f7746cf before 4bf629262f9118ee91b1c3a518ebf2b3bcb22180
affected

0626e6641f6b467447c81dd7678a69c66f7746cf before 79ed288cef201f1f212dfb934bcaac75572fb8f6
affected

Default status
affected

5.15
affected

Any version before 5.15
unaffected

5.15.127
unaffected

6.1.46
unaffected

6.4.11
unaffected

6.5
unaffected

References

git.kernel.org/...c/aeb974907642be095e38ecb1a400ca583958b2b0

git.kernel.org/...c/f339d76a3a972601d0738b881b099d49ebbdc3a2

git.kernel.org/...c/4bf629262f9118ee91b1c3a518ebf2b3bcb22180

git.kernel.org/...c/79ed288cef201f1f212dfb934bcaac75572fb8f6

cve.org (CVE-2023-4130)

nvd.nist.gov (CVE-2023-4130)

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