CVE-2025-21844

MEDIUM EPSS 11.3%
Published Mar 12, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Mar 12, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
11.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥6.1.69  –  <6.1.130
linuxlinux_kernel*≥6.6.8  –  <6.6.80
linuxlinux_kernel*≥6.7  –  <6.12.17
linuxlinux_kernel*≥6.13  –  <6.13.5
linuxlinux_kernel5.10.211any
linuxlinux_kernel5.15.150any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 10

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

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f277e479eea3d1aa18bc712abe1d2bf3dece2e30
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f618aeb6cad2307e48a641379db610abcf593edf
    Patch