CVE-2026-64015: Linux, състезание за ресурс

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди 1d8d987a2aacde238ecd0f4946f28cef74c42b79; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди 5036a9aa7f21fbce89a2a8451bbc177bae2e920d; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди 4c5d407ba3ff7f30561ff73ba1b07ed70c864edc; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди cefa4265b11176c897a7d9e8e54d89e3701c5584; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди 5659e6923cb72f8e18e8b539109ab512455fe195; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди 50bb3435a5e627bfbdc52eb4536f49f88b3486b8; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди 66288dcadf80974436250e9f70ed848836b835b5; b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 преди 43a1e3744548e6fd85873e6fb43e293eb4010694
• Linux Linux: 3.13; преди 3.13; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.175 до 6.1.*; 6.6.142 до 6.6.*; 6.12.92 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

Вид слабост

• CWE-362 Неправилна синхронизация при споделен ресурс (Race Condition)

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64015
• https://nvd.nist.gov/vuln/detail/CVE-2026-64015
• https://git.kernel.org/stable/c/1d8d987a2aacde238ecd0f4946f28cef74c42b79
• https://git.kernel.org/stable/c/5036a9aa7f21fbce89a2a8451bbc177bae2e920d
• https://git.kernel.org/stable/c/4c5d407ba3ff7f30561ff73ba1b07ed70c864edc
• https://git.kernel.org/stable/c/cefa4265b11176c897a7d9e8e54d89e3701c5584
• https://git.kernel.org/stable/c/5659e6923cb72f8e18e8b539109ab512455fe195
• https://git.kernel.org/stable/c/50bb3435a5e627bfbdc52eb4536f49f88b3486b8
• https://git.kernel.org/stable/c/66288dcadf80974436250e9f70ed848836b835b5
• https://git.kernel.org/stable/c/43a1e3744548e6fd85873e6fb43e293eb4010694