CVE-2026-89670High· 7.0▾ TwilightA flaw was found in the Linux kernel's Network File System Daemon (nfsd) component. A race condition exists in the `nfsd_open_local_fh()` function where an `nfsd_file` object can be freed and its memory recycled while another process attem…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 7.5
none → high
— → 7.5
none → high
— → 7.8
none → high
7.8 → 7.5
7.5 → 7.8
7.8 → 7.5
Last analysed / modified upstream
7.5 → 7
A flaw was found in the Linux kernel's Network File System Daemon (nfsd) component. A race condition exists in the nfsd_open_local_fh() function where an nfsd_file object can be freed and its memory recycled while another process attempts to access it. This can lead to a use-after-free vulnerability, allowing an attacker to potentially cause memory corruption, disclose sensitive information, or execute arbitrary code.
kernel: nfsd: hold rcu across localio cmpxchg retry — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.
Affected:
No fix planned:
Not affected:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-89668High· 7.0kernel: nfsd: move nfsd_debugfs_init() after nfsd4_init_slabs() in init_nfsd() (CVE-2026-89668)
CVE-2026-89689High· 7.0kernel: nfsd: don't free session slots that are still in use (CVE-2026-89689)
CVE-2026-89747High· 7.0kernel: tracing: Fix use-after-free in trace_pipe read on sub-buffer order change (CVE-2026-89747)
CVE-2026-89769Medium· 5.5kernel: clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path (CVE-2026-89769)
CVE-2026-89469Medium· 5.5kernel: power: supply: lp8727: fix use-after-free in lp8727_release_irq() (CVE-2026-89469)
CVE-2026-89661Medium· 5.5kernel: NFSD: Prevent post-shutdown use-after-free in unlock_filesystem (CVE-2026-89661)