CVE-2025-21853: bpf: avoid holding freeze_mutex during mmap operation
bpf: avoid holding freezemutex during mmap operation
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 5.15.182.1-1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.82.1-1
Event History
Frequently Asked Questions
What is the severity of CVE-2025-21853?
CVE-2025-21853 has been classified as having a moderate severity level.
How do I fix CVE-2025-21853?
To fix CVE-2025-21853, update your Linux kernel to the latest version that addresses this vulnerability.
What are the potential impacts of CVE-2025-21853?
CVE-2025-21853 may allow for race conditions during memory mapping of BPF map contents, potentially leading to information leakage or system instability.
Which versions of the Linux kernel are affected by CVE-2025-21853?
CVE-2025-21853 affects certain versions of the Linux kernel prior to the patch being applied.
Is there a detailed technical explanation for CVE-2025-21853?
CVE-2025-21853 involves an issue with the freeze_mutex during mmap operations in BPF, leading to potential race conditions.