CVE-2025-21844
HIGH severity · CVSS 7.5 · CWE-476
7.5CVSS HIGH
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3b ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3bPatch
- https://git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96Patch
- https://git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7Patch
- https://git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391Patch
- https://git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bdPatch
- https://git.kernel.org/stable/c/f277e479eea3d1aa18bc712abe1d2bf3dece2e30Patch
- https://git.kernel.org/stable/c/f618aeb6cad2307e48a641379db610abcf593edfPatch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html