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CVE-2025-40173

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

net/ip6_tunnel: Prevent perpetual tunnel growth

Similarly to ipv4 tunnel, ipv6 version updates dev->needed_headroom, too.
While ipv4 tunnel headroom adjustment growth was limited in
commit 5ae1e9922bbd ("net: ip_tunnel: prevent perpetual headroom growth"),
ipv6 tunnel yet increases the headroom without any ceiling.

Reflect ipv4 tunnel headroom adjustment limit on ipv6 version.

Credits to Francesco Ruggeri, who was originally debugging this issue
and wrote local Arista-specific patch and a reproducer.
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Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version < 566f8d5c8a443f2dd69c5460fdec43ed1c870c65
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
Version < 11f6066af3bfb8149aa16c42c0b0c5ea5b199a94
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
Version < 402b6985e872b4cf394bbbf33b503947a326a6cb
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
Version < 10fe967efe73c610e526ff7460581610633dee9c
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
Version < 48294a67863c9cfa367abb66bbf0ef6548ae124f
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
Version < eeb4345488672584db4f8c20a1ae13a212ce31c4
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
Version < b6eb25d870f1a8ae571fd3da2244b71df547824b
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
Version < 21f4d45eba0b2dcae5dbc9e5e0ad08735c993f16
Version 8eb30be0352d09165e94a41fef1c7b994dca0714
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 4.7
Status affected
Version < 4.7
Version 0
Status unaffected
Version <= 5.4.*
Version 5.4.301
Status unaffected
Version <= 5.10.*
Version 5.10.246
Status unaffected
Version <= 5.15.*
Version 5.15.196
Status unaffected
Version <= 6.1.*
Version 6.1.158
Status unaffected
Version <= 6.6.*
Version 6.6.114
Status unaffected
Version <= 6.12.*
Version 6.12.55
Status unaffected
Version <= 6.17.*
Version 6.17.5
Status unaffected
Version <= *
Version 6.18
Status unaffected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.06% 0.193
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String