CVE-2026-52936None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: crypto: jitterentropy - replace long-held spinlock with mutex jent_kcapi_random() serializes the shared jitterentropy state, but it currently holds a spinlock across t…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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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.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
crypto: jitterentropy - replace long-held spinlock with mutex
jent_kcapi_random() serializes the shared jitterentropy state, but it currently holds a spinlock across the jent_read_entropy() call. That path performs expensive jitter collection and SHA3 conditioning, so parallel readers can trigger stalls as contending waiters spin for the same lock.
To prevent non-preemptible lock hold, replace rng->jent_lock with a mutex so contended readers sleep instead of spinning on a shared lock held across expensive entropy generation.
Linux >= bb5530e4082446aac3a3d69780cd4dbfa4520013 < 21de77d06f6b540e870e64ef5ff56be4eb8ba08fLinux >= bb5530e4082446aac3a3d69780cd4dbfa4520013 < 18216b8ab6904753eaf31baf453cb02ecd202ba4Linux >= bb5530e4082446aac3a3d69780cd4dbfa4520013 < 4c03e6eb98443dc4d6d422a9780034a5b75376b4Linux >= bb5530e4082446aac3a3d69780cd4dbfa4520013 < ff734dbd9e2432601a6dcd167cfb0bf8a36d1880Linux >= bb5530e4082446aac3a3d69780cd4dbfa4520013 < ec427dc5286da1ed08f2d510e2147a7581b0cb02Linux >= bb5530e4082446aac3a3d69780cd4dbfa4520013 < 01d798e9feb30212952d4e992801ba6bd6a82351Linux 4.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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