CVE-2026-74550

CVE CVE-2026-74550EUVD EUVD-2026-59615Published 2026-08-15T12:27:57.000ZLast changed 2026-08-19T16:38:44.000ZCVSS 7.5

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inet_getpeer_v4() or inet_getpeer_v6() fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending un-rate-limited ICMP/NDISC Redirect messages. In IPv4, ip_rt_send_redirect() called icmp_send() directly when peer == NULL. In IPv6, ip6_forward() and ndisc_send_redirect() passed a NULL peer into inet_peer_xrlim_allow(), which returned true when peer == NULL. Because ICMP/NDISC Redirects are not part of the default global rate limit mask (sysctl_icmp_ratemask), sending redirects when peer == NULL creates an un-rate-limited ICMP packet storm. Fix this by failing closed in ip_rt_send_redirect(), ip6_forward(), and ndisc_send_redirect() when peer is NULL.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.1.8; patch: 0; 92d8682926342d2b6aa5b2ecc02221e00e1573a0 <21666f7af49a90ef44d474916b8ef4402dfd74f5; 92d8682926342d2b6aa5b2ecc02221e00e1573a0 <828f6670d110ff2bf44c743037b38badc315704c; 92d8682926342d2b6aa5b2ecc02221e00e1573a0 <5ec5f00fc606a6df8434948c4552b3cb1176595d; patch: 6.1.183; 92d8682926342d2b6aa5b2ecc02221e00e1573a0 <c0adf8b4247bcc5a145a25c1929006eb392580bb; patch: 6.6.151; patch: 7.2; 2.6.39; 92d8682926342d2b6aa5b2ecc02221e00e1573a0 <f5ecaa7ea7686fa7ecdb6affc9d3a9a42e4524b1; 92d8682926342d2b6aa5b2ecc02221e00e1573a0 <dbc3791e3b2472e1ccc08947e0f83b443470ff4f; patch: 6.12.103; patch: 6.18.44

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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