CVE-2026-64015
CVE CVE-2026-64015EUVD EUVD-2026-45588Published 2026-07-19T15:39:10.000ZLast changed 2026-08-05T12:38:12.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 <4c5d407ba3ff7f30561ff73ba1b07ed70c864edc; patch: 7.1; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 <cefa4265b11176c897a7d9e8e54d89e3701c5584; patch: 6.6.142; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 <66288dcadf80974436250e9f70ed848836b835b5; 3.13; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 <5659e6923cb72f8e18e8b539109ab512455fe195; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 <43a1e3744548e6fd85873e6fb43e293eb4010694; patch: 6.12.92; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 <50bb3435a5e627bfbdc52eb4536f49f88b3486b8; patch: 0; patch: 6.1.175; patch: 7.0.11; patch: 6.18.34
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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