CVE-2025-21844highCWE-476

CVE-2025-21844: high-severity vulnerability in Linux

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

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.6%
exploitation probability
0.6%top 51% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · Linux
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References
https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-784472.htmlhttps://git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3bhttps://git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96https://git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7https://git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391https://git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bdhttps://git.kernel.org/stable/c/f277e479eea3d1aa18bc712abe1d2bf3dece2e30https://git.kernel.org/stable/c/f618aeb6cad2307e48a641379db610abcf593edfhttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlhttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html