CVE-2026-98818Medium· 4.7▾ SunlitA flaw was found in the Linux kernel. When freeing memory through the slab allocator, the system may attempt to wake the kernel swap daemon while an internal scheduler lock is already held. This unsafe sequence can trigger a circular locki…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 25.9 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
Last analysed / modified upstream
— → 4.7
none → medium
A flaw was found in the Linux kernel. When freeing memory through the slab allocator, the system may attempt to wake the kernel swap daemon while an internal scheduler lock is already held. This unsafe sequence can trigger a circular locking dependency and cause a system deadlock. A local user could exploit this condition to trigger a system hang, resulting in a Denial of Service (DoS).
kernel: mm/slab: do not wake up kswapd in __kfree_rcu_sheaf() — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-24.
Affected:
No fix planned:
Not affected:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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