CVE-2026-98573High· 7.5▾ TwilightA flaw was found in the Linux kernel. An integer underflow in the networking subsystem allows an attacker to trigger an out-of-bounds memory copy by sending specially crafted Internet Protocol version 6 (IPv6) packets with extension header…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · 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%
— → 7.5
none → high
0.2% → 0.2%
A flaw was found in the Linux kernel. An integer underflow in the networking subsystem allows an attacker to trigger an out-of-bounds memory copy by sending specially crafted Internet Protocol version 6 (IPv6) packets with extension headers. This vulnerability can lead to kernel memory corruption, resulting in a system crash and a Denial of Service (DoS).
kernel: net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6() — rated Important by Red Hat. Released 2026-10-18, updated 2026-10-20.
Affected:
No fix planned:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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