CVE-2025-21648Medium· 5.5▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: clamp maximum hashtable size to INT_MAX Use INT_MAX as maximum size for the conntrack hashtable. Otherwise, it is possible to hit WARN_ON_ONCE in…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
0.2% → 0.2%
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: clamp maximum hashtable size to INT_MAX
Use INT_MAX as maximum size for the conntrack hashtable. Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when resizing hashtable because __GFP_NOWARN is unset. See:
0708a0afe291 ("mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls")
Note: hashtable resize is only possible from init_netns.
linux_kernel >= 4.7.1, < 5.10.234linux_kernel >= 5.11, < 5.15.177linux_kernel >= 5.16, < 6.1.125linux_kernel >= 6.2, < 6.6.72linux_kernel >= 6.7, < 6.12.10linux_kernel = 4.7linux_kernel = 6.13Upgrade past the affected range:
linux_kernel 6.12.10Connected by shared product, vendor, weakness, or advisory.
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