CVE-2025-21844

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.

Score

CVSS 3.1 7.5 High

Status

Modified - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-03-12

Last modified

2026-10-15

Weaknesses

CWE-476

Affected products

• Linux Kernel (Linux)
• Simatic S7-1500 Tm Mfp - Gnulinux Subsystem (Siemens)

References

• https://git.kernel.org/stable/c/f277e479eea3d1aa18bc712abe1d2bf3dece2e30
• https://git.kernel.org/stable/c/f618aeb6cad2307e48a641379db610abcf593edf
• https://git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3b
• https://git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391
• https://git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd
• https://git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96
• https://git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7
• https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
• https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
• https://cert-portal.siemens.com/productcert/html/ssa-265688.html
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html