CVE-2025-21934 — Use After Free in Linux

CWE-416 — Use After Free102 documents7 sources
Severity
7.8HIGHNVD
OSV8.8OSV7.1OSV5.9OSV5.5OSV4.7
EPSS
0.1%
top 79.78%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
LinuxLinux KernelDebian Linux+5 more
Timeline
PublishedApr 1
Latest updateOct 15

Description

In the Linux kernel, the following vulnerability has been resolved: rapidio: fix an API misues when rio_add_net() fails rio_add_net() calls device_register() and fails when device_register() fails. Thus, put_device() should be used rather than kfree(). Add "mport->net = NULL;" to avoid a use after free issue.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages10 packages

▶NVDlinux/linux_kernel4.6 — 5.4.291+7
▶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

50
OSV
linux-oracle-6.8 vulnerabilities↗2025-10-15
▶
OSV
linux-azure-nvidia vulnerabilities↗2025-10-08
▶
OSV
linux-oracle vulnerabilities↗2025-10-06
▶
OSV
linux-azure, linux-azure-6.8 vulnerabilities↗2025-10-02
▶
OSV
linux-raspi-realtime vulnerabilities↗2025-10-02
▶

📋Vendor Advisories

51
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-10-15
▶
Ubuntu
Linux kernel (Azure, N-Series) vulnerabilities↗2025-10-08
▶
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-10-06
▶
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities↗2025-10-02
▶
Ubuntu
Linux kernel (HWE) vulnerabilities↗2025-10-02
▶
CVE-2025-21934 — Use After Free in Linux | cvebase