CVE-2026-45897Medium· 5.5▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: netfilter: nft_counter: serialize reset with spinlock Add a global static spinlock to serialize counter fetch+reset operations, preventing concurrent dump-and-reset fr…
▾ 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 3.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.1%
Last analysed / modified upstream
0.1% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_counter: serialize reset with spinlock
Add a global static spinlock to serialize counter fetch+reset operations, preventing concurrent dump-and-reset from underrunning values.
The lock is taken before fetching the total so that two parallel resets cannot both read the same counter values and then both subtract them.
A global lock is used for simplicity since resets are infrequent. If this becomes a bottleneck, it can be replaced with a per-net lock later.
linux_kernel >= 6.1.107, < 6.2linux_kernel >= 6.6.48, < 6.19.4Upgrade past the affected range:
linux_kernel 6.19.4Connected by shared product, vendor, weakness, or advisory.
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