CVE-2025-21750 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer DereferenceCWE-20 — Improper Input Validation30 documents7 sources
Severity
5.5MEDIUMNVD
OSV7.8OSV7.1OSV5.9
EPSS
0.1%
top 82.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
LinuxLinux KernelDebian Linux+4 more
Timeline
PublishedFeb 27
Latest updateSep 3

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Check the return value of of_property_read_string_index() Somewhen between 6.10 and 6.11 the driver started to crash on my MacBookPro14,3. The property doesn't exist and 'tmp' remains uninitialized, so we pass a random pointer to devm_kstrdup(). The crash I am getting looks like this: BUG: unable to handle page fault for address: 00007f033c669379 PF: supervisor read access in kernel mode PF: error_code(0x0001…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages9 packages

▶NVDlinux/linux_kernel6.2 — 6.6.78+3
▶Debianlinux/linux_kernel< 6.1.129-1+2
▶Ubuntulinux/linux_kernel< 6.8.0-64.67

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

14
OSV
linux-azure, linux-azure-6.8, linux-azure-nvidia vulnerabilities↗2025-09-03
▶
OSV
linux-raspi vulnerabilities↗2025-07-24
▶
OSV
linux-raspi-realtime vulnerabilities↗2025-07-24
▶
OSV
linux-gcp, linux-gcp-6.8 vulnerabilities↗2025-07-22
▶
OSV
linux-aws-6.8, linux-gke, linux-gkeop, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oracle, linux-oracle-6.8 vulnerabilities↗2025-07-22
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📋Vendor Advisories

15
Ubuntu
Linux kernel (Azure) vulnerabilities↗2025-09-03
▶
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities↗2025-07-24
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2025-07-24
▶
Ubuntu
Linux kernel (GCP) vulnerabilities↗2025-07-22
▶
Ubuntu
Linux kernel vulnerabilities↗2025-07-22
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