What’s Vulnerable › Vulnerabilities

CVE-2026-90148: NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease() When nfs4_add_lease() races with a delegation return, it calls nfs4_delete_lease() to clean up. Previously, it passed priv, which can legitimately be NULL. Passing a NULL priv eventually leads to a NULL pointer dereference in generic_setlease().

Affected products

• Linux: 5.14 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/468e458ffde907ba19acd2102ca1fbb8f6fbede2
• https://git.kernel.org/stable/c/c951b876cccd8a4e21fe8b9712894f6a2513ddbc
• https://git.kernel.org/stable/c/d148a652d52fd6aee96daf798922eb800ebb3018
• https://git.kernel.org/stable/c/d179ff22cd8514f966966fd9ad425dcbb98e1ada
• https://git.kernel.org/stable/c/e25e5b4a764638ec9e2dc6c9affe080c922ea1f2
• https://git.kernel.org/stable/c/ff7244faa13b23e9acfad9df0438f0b44b338f62

Get alerted when CVE-2026-90148 or the next vulnerability affects your stack