CVE-2026-74656: Linux 4.19

Affected technology

Linux · af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before fd39e711866498ae94fcf9acf6f422a4f045b681, af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before e1e602d6b22d5cb1641c4459c487eb18bf569e0a, af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before e00f7d2b5f2540a3415a229c982af7a25ff6362e, af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before dfe388da13aa784851e5ebbea90afbb099075761, af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before 5a28a4b22dde92f9d293b94236314b8d6181dc4a, af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before 63996ffc594d128ccec8fc0983f91effd2d3adc4, af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before ed503eaad62f20cdd5122d7c3078a648a99c8f16, af7d6cce53694a88d6a1bb60c9a239a6a5144459 to before bc5bde9ce3cc36502839dfe98e068f7303a50982, b427832009b97a3ee412ef643a80b15372a7754d, 2b7e4c735933be79882aba2bed9afa789e03c62f, 8d59c3a6376bbc6dd3f7303968a719ffba75a4f1, 9b4869cf385aa16f89c0f019eed4ec4e36aa441c, ff34695ced21e2dfa04d0fa1c5f6c35011fa8117, 3.16.62 to before 3.17, 4.4.162 to before 4.5, 4.9.134 to before 4.10, 4.14.77 to before 4.15, 4.18.15 to before 4.19
Linux

Linux · 4.19
Linux

Component: Not specified by the source
File: include/net/route.h, net/ipv4/fib_semantics.c, net/ipv4/route.c

Attack conditions (Source advisory, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.