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CVE-2025-21844

smb: client: Add check for next_buffer in receive_encrypted_standard()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.235, 5.15.179, 6.1.130, 6.6.80, 6.12.17, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get() in receive_encrypted_standard() to prevent null pointer dereference.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From b03c8099a738a04d2343547ae6a04e5f0f63d3fa · fixed in f277e479eea3d1aa18bc712abe1d2bf3dece2e30; From 858e73ff25639a0cc1f6f8d2587b62c045867e41 · fixed in f618aeb6cad2307e48a641379db610abcf593edf; From 9f528a8e68327117837b5e28b096f52af4c26a05 · fixed in 24e8e4523d3071bc5143b0db9127d511489f7b3b; From 534733397da26de0303057ce0b93a22bda150365 · fixed in 9e5d99a4cf2e23c716b44862975548415fae5391; From eec04ea119691e65227a97ce53c0da6b9b74b0b7 · fixed in a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd; From eec04ea119691e65227a97ce53c0da6b9b74b0b7 · fixed in 554736b583f529ee159aa95af9a0cbc12b5ffc96; From eec04ea119691e65227a97ce53c0da6b9b74b0b7 · fixed in 860ca5e50f73c2a1cef7eefc9d39d04e275417f7; From 5.10.211 · fixed in 5.10.235; From 5.15.150 · fixed in 5.15.179; From 6.1.69 · fixed in 6.1.130; From 6.6.8 · fixed in 6.6.80

  • Linux Linux

    6.7

  • KernelLinux

    fixed in 5.10.235; From 5.11.0 · fixed in 5.15.179; From 5.16.0 · fixed in 6.1.130; From 6.2.0 · fixed in 6.6.80; From 6.7.0 · fixed in 6.12.17; fixed in 6.13.5

References 7

git.kernel.org