7.8

CVE-2026-89562

ip6_gre: fix hardware header length for NBMA tunnels

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

ip6_gre: fix hardware header length for NBMA tunnels

ip6gre_tnl_link_config_route() accumulates the lower device's hardware
header length into dev->hard_header_len whenever header_ops is set. This
is incorrect for both users of header_ops.

ip6gretap and ip6erspan have a fixed Ethernet hardware header length.
For an NBMA ip6gre tunnel, ip6gre_header() creates only the GRE header,
the optional FOU or GUE header, and the outer IPv6 header. The lower
device header is headroom needed later, not part of the tunnel device's
hardware header.

Keep the lower device header in needed_headroom. Set hard_header_len to
the tunnel header length only for ARPHRD_IP6GRE devices with header_ops,
and leave the fixed Ethernet header length unchanged for tap and erspan
devices.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < cb1afd087aedc90e5274537e4fb9bf3f98e5afdb
Status affected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < 7719f6e7ed2ffddc2c3bb61f4467b76d49e0af6a
Status affected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < b1e95e3602d8e112458627f14c6c31c21f2188cb
Status affected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < c3457a5aae5fb43f7023d3f3dc472c2afa22acf0
Status affected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < 8bfe746afee38dd6e4348ddcd22d554789dbb9ff
Status affected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < b8282668d8fa7c61b80e8e4890729031c291a16c
Status affected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < 565038b0092f65afe384961c0f548d605bf438b9
Status affected
Version 832ba596494b2c9eac7760259eff2d8b7dcad0ee
Version < 505b6d296c486ef7d1274f279d4c43a172f63224
Status affected
Version cf3d9717a5271573fa193c4dfa0df856295d5b15
Status affected
Version 187a6daf5db45adc807c85bbe285319107bed198
Status affected
Version d9897bb66ce989325b4bf4cdbb6a799e4ac878b6
Status affected
Version 4.19.162
Version < 4.20
Status affected
Version 5.4.82
Version < 5.5
Status affected
Version 5.9.13
Version < 5.10
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.10
Status affected
Version 0
Version < 5.10
Status unaffected
Version <= 5.10.*
Version 5.10.270
Status unaffected
Version <= 5.15.*
Version 5.15.221
Status unaffected
Version <= 6.1.*
Version 6.1.188
Status unaffected
Version <= 6.6.*
Version 6.6.157
Status unaffected
Version <= 6.12.*
Version 6.12.109
Status unaffected
Version <= 6.18.*
Version 6.18.50
Status unaffected
Version <= 7.2.*
Version 7.2.4
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.028
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/8bfe746afee38dd6e4348ddcd22d554789dbb9ff
https://git.kernel.org/stable/c/b8282668d8fa7c61b80e8e4890729031c291a16c
https://git.kernel.org/stable/c/565038b0092f65afe384961c0f548d605bf438b9
https://git.kernel.org/stable/c/505b6d296c486ef7d1274f279d4c43a172f63224
https://git.kernel.org/stable/c/7719f6e7ed2ffddc2c3bb61f4467b76d49e0af6a
https://git.kernel.org/stable/c/b1e95e3602d8e112458627f14c6c31c21f2188cb
https://git.kernel.org/stable/c/c3457a5aae5fb43f7023d3f3dc472c2afa22acf0
https://git.kernel.org/stable/c/cb1afd087aedc90e5274537e4fb9bf3f98e5afdb