CVE-2026-98570Medium· 5.9▾ SunlitA flaw was found in the Linux kernel's IPv6 networking subsystem. An unauthenticated remote attacker can cause a Denial of Service (DoS) by sending network traffic through an affected IPv6 tunnel interface. Due to insufficient buffer alloc…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 32.5 · 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
Last analysed / modified upstream
0.2%
— → 5.9
none → medium
A flaw was found in the Linux kernel's IPv6 networking subsystem. An unauthenticated remote attacker can cause a Denial of Service (DoS) by sending network traffic through an affected IPv6 tunnel interface. Due to insufficient buffer allocation when reconstructing packet headers, an unchecked negative offset triggers an out-of-bounds memory write. This vulnerability can lead to an immediate system crash and potential memory corruption.
kernel: net: ipv6: keep room for the mac header in dst_dev_overhead() — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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