CVE-2025-21776 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference84 documents7 sources
Severity
5.5MEDIUMNVD
OSV8.8OSV7.8OSV7.1OSV5.9
EPSS
0.0%
top 96.68%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
LinuxLinux KernelDebian Linux+5 more
Timeline
PublishedFeb 27
Latest updateSep 3

Description

In the Linux kernel, the following vulnerability has been resolved: USB: hub: Ignore non-compliant devices with too many configs or interfaces Robert Morris created a test program which can cause usb_hub_to_struct_hub() to dereference a NULL or inappropriate pointer: Oops: general protection fault, probably for non-canonical address 0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI CPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14 Hardware name: FreeB…

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 Packages10 packages

▶NVDlinux/linux_kernel6.2 — 6.6.79+4
▶Debianlinux/linux_kernel< 5.10.237-1+3
▶Ubuntulinux/linux_kernel< 5.4.0-216.236+2

Patches

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

🔴Vulnerability Details

41
OSV
linux-azure, linux-azure-6.8, linux-azure-nvidia vulnerabilities↗2025-09-03
▶
OSV
linux-gke, linux-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-raspi vulnerabilities↗2025-08-28
▶
OSV
linux-raspi-realtime vulnerabilities↗2025-08-26
▶
OSV
linux-oracle, linux-oracle-6.8 vulnerabilities↗2025-08-21
▶
OSV
linux-aws-6.8, linux-gcp, linux-gcp-6.8, linux-gkeop, linux-ibm, linux-ibm-6.8 vulnerabilities↗2025-08-20
▶

📋Vendor Advisories

42
Ubuntu
Linux kernel (Azure) vulnerabilities↗2025-09-03
▶
Ubuntu
Linux kernel vulnerabilities↗2025-08-28
▶
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities↗2025-08-26
▶
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-08-21
▶
Ubuntu
Linux kernel vulnerabilities↗2025-08-20
▶
CVE-2025-21776 — NULL Pointer Dereference in Linux | cvebase