CVE detail
CVE-2026-64015
In the Linux kernel, the following vulnerability has been resolved: security/keys: fix missed RCU read section on lookup Nicholas Carlini reports that the keyring code calls assoc_array_find() in find_key_to_update() without holding the RCU read lock, while the assoc_array_gc() code really is designed around removing the node from the tree and then freeing it after an RCU grace-period. The regular key handling doesn't see this because holding the keyring semaphore hides any lifetime issues, but the persistent key handling uses a different model. Instead of extending the keyring locking, just do the simple RCU locking that the assoc_array was designed for.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 20.8 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 7
- within the 30d window
- Peak daily
- 6
- highest bucket
Evidence
Source links by recency
7 source links · newest first
Information published.
vendormsrc.microsoft.comJul 21, 2026, 8:02 AMNo excerpt available.
Patchgit.kernel.orgJul 19, 2026, 4:17 PMNo excerpt available.
Patchgit.kernel.orgJul 19, 2026, 4:17 PMNo excerpt available.
Patchgit.kernel.orgJul 19, 2026, 4:17 PMNo excerpt available.
Patchgit.kernel.orgJul 19, 2026, 4:17 PMNo excerpt available.
Patchgit.kernel.orgJul 19, 2026, 4:17 PMNo excerpt available.
Patchgit.kernel.orgJul 19, 2026, 4:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.