CVE-2025-39689Medium· 6.4▾ SunlitA flaw was found in the Linux kernel. A Use-After-Free (UAF) vulnerability exists in the ftrace subsystem during the reading of tracing filter files. The filter reader retains a direct pointer to global filter data rather than creating an …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.2 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
Last analysed / modified upstream
7.8 → 6.4
high → medium
A flaw was found in the Linux kernel. A Use-After-Free (UAF) vulnerability exists in the ftrace subsystem during the reading of tracing filter files. The filter reader retains a direct pointer to global filter data rather than creating an independent copy, which allows concurrent updates to free the underlying memory while it is still referenced. A local attacker can exploit this flaw to cause a Denial of Service (DoS) through a system crash or potentially achieve privilege escalation.
kernel: ftrace: Also allocate and copy hash for reading of filter files — rated Moderate by Red Hat. Released 2025-09-05, updated 2026-10-16.
Affected:
No fix planned:
Not affected:
Out of support scope
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-106071Low· 3.6nodejs: nodejs: Permission model bypass via wildcard path matching flaw (CVE-2026-106071)
CVE-2026-106070Low· 3.7nodejs: Node.js: Security inspection bypass via crafted ZIP archive header mismatch (CVE-2026-106070)
CVE-2026-98873Low· 3.3kernel: netfilter: nf_conntrack_expect: zero at allocation time (CVE-2026-98873)
CVE-2026-98871Medium· 4.1kernel: crypto: ccp - Fix possible deadlock in SEV init failure path (CVE-2026-98871)
CVE-2026-98876Medium· 4.1kernel: host1x: bus: Fix missing ops null check in error teardown (CVE-2026-98876)
CVE-2026-98874Low· 2.3kernel: wifi: iwlwifi: mld: don't WARN on WoWLAN suspend w/o netdetect (CVE-2026-98874)