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CVE-2026-43092

xsk: validate MTU against usable frame size on bind

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

xsk: validate MTU against usable frame size on bind

AF_XDP bind currently accepts zero-copy pool configurations without
verifying that the device MTU fits into the usable frame space provided
by the UMEM chunk.

This becomes a problem since we started to respect tailroom which is
subtracted from chunk_size (among with headroom). 2k chunk size might
not provide enough space for standard 1500 MTU, so let us catch such
settings at bind time. Furthermore, validate whether underlying HW will
be able to satisfy configured MTU wrt XSK's frame size multiplied by
supported Rx buffer chain length (that is exposed via
net_device::xdp_zc_max_segs).
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 24ea50127ecf0efe819c1f6230add27abc6ca9d9
Version < a55793e5a97d4e39bdb380873a9780fe0010bff6
Status affected
Version 24ea50127ecf0efe819c1f6230add27abc6ca9d9
Version < f669d60db11dbabb96279f2b20f9d1cba43cddb2
Status affected
Version 24ea50127ecf0efe819c1f6230add27abc6ca9d9
Version < 25e1e91a8da819924df0b16e3812d7b24c8ce133
Status affected
Version 24ea50127ecf0efe819c1f6230add27abc6ca9d9
Version < b2f4daa6422fd6cc0cec969794dab4a88ea4cea1
Status affected
Version 24ea50127ecf0efe819c1f6230add27abc6ca9d9
Version < 36ee60b569ba0dfb6f961333b90d19ab5b323fa9
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.6
Status affected
Version 0
Version < 6.6
Status unaffected
Version <= 6.6.*
Version 6.6.136
Status unaffected
Version <= 6.12.*
Version 6.12.83
Status unaffected
Version <= 6.18.*
Version 6.18.24
Status unaffected
Version <= 6.19.*
Version 6.19.14
Status unaffected
Version <= *
Version 7.0
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 0.02% 0.068
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
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