9.8

CVE-2026-63993

vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()

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

vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()

skb_tunnel_check_pmtu() can change skb->head.

Reusing old_iph afer skb_tunnel_check_pmtu() can cause an UAF.

Use instead ip_hdr(skb) as done in drivers/net/bareudp.c
and drivers/net/geneve.c.

Found by Sashiko.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < 6b8bfce9d2f774d2c2243e0248e03efb99bba6c0
Status affected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < 9257f56ac47ef1976bcd056cf986a9988eeec67a
Status affected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < 8d435d68d71fb875876b722f4136caf74f2f48bd
Status affected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < dc3bfa050f873371e745bdf478b1f5b738e5733d
Status affected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < 609e63312c29aad18026a1d3222e123d4b6b0feb
Status affected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < 5303925e360527243b46a440a04667826bbc72b7
Status affected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < a493efd4336cf19122ae0e4cbb3d31b32d70deea
Status affected
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Version < 7d9ef0cb271555d8cf39fefe6c981e1493b25ecf
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.9
Status affected
Version 0
Version < 5.9
Status unaffected
Version <= 5.10.*
Version 5.10.259
Status unaffected
Version <= 5.15.*
Version 5.15.210
Status unaffected
Version <= 6.1.*
Version 6.1.176
Status unaffected
Version <= 6.6.*
Version 6.6.143
Status unaffected
Version <= 6.12.*
Version 6.12.93
Status unaffected
Version <= 6.18.*
Version 6.18.35
Status unaffected
Version <= 7.0.*
Version 7.0.12
Status unaffected
Version <= *
Version 7.1
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 0.51% 0.407
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/6b8bfce9d2f774d2c2243e0248e03efb99bba6c0
https://git.kernel.org/stable/c/9257f56ac47ef1976bcd056cf986a9988eeec67a
https://git.kernel.org/stable/c/8d435d68d71fb875876b722f4136caf74f2f48bd
https://git.kernel.org/stable/c/dc3bfa050f873371e745bdf478b1f5b738e5733d
https://git.kernel.org/stable/c/609e63312c29aad18026a1d3222e123d4b6b0feb
https://git.kernel.org/stable/c/5303925e360527243b46a440a04667826bbc72b7
https://git.kernel.org/stable/c/a493efd4336cf19122ae0e4cbb3d31b32d70deea
https://git.kernel.org/stable/c/7d9ef0cb271555d8cf39fefe6c981e1493b25ecf