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THREAT OPS › Threat News › [NVD] CVE-2026-43501 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows ipv6_rpl_srh_rcv() decompresses an RFC 6554 Source Routing Header, swaps the next segment into ipv6_hdr->daddr, recompresses, then pulls the old h

[NVD] CVE-2026-43501 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows ipv6_rpl_srh_rcv() decompresses an RFC 6554 Source Routing Header, swaps the next segment into ipv6_hdr->daddr, recompresses, then pulls the old h

lownvdPublished 2026-05-21

CVE-2026-43501 CVSS: 9.8 CRITICAL Published: 2026-05-21T13:16:19.410

In the Linux kernel, the following vulnerability has been resolved:

ipv6: rpl: reserve mac_len headroom when recompressed SRH grows

ipv6_rpl_srh_rcv() decompresses an RFC 6554 Source Routing Header, swaps the next segment into ipv6_hdr->daddr, recompresses, then pulls the old header and pushes the new one plus the IPv6 header

Indicators of compromise

CVE-2026-43501cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-43501