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CVE-2026-93824

tls: reject the combination of TLS and sockmap

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

tls: reject the combination of TLS and sockmap

TLS and sockmap (BPF psock) integration hides a lot of latent bugs.
Bugs which may be more or less relevant for real users but they
are definitely exploitable.

We could not find anyone actively using this integration so let's
reject this config. Adding a TLS socket to a sockmap was already
rejected by sk_psock_init() through the inet_csk_has_ulp() check.
We need to reject the attempts to configure the TLS keys (rather
than adding the ULP itself) because checking prior to the ULP
installation is tricky without risking a race with sockmap getting
added in parallel (sockmap does not hold the socket lock).

This patch is a minimal rejection of the feature. Subsequent patch
in the series will do a light dead code removal. Full cleanup would
require a major rewrite of the Tx path, we don't need skmsg any more.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version d3b18ad31f93d0b6bae105c679018a1ba7daa9ca
Version < c4896592744f30ff026f799947c5978bcfd7c8c7
Status affected
Version d3b18ad31f93d0b6bae105c679018a1ba7daa9ca
Version < e26aa709454d48c3b3ef8d3100c8a04e7d9fd94e
Status affected
Version d3b18ad31f93d0b6bae105c679018a1ba7daa9ca
Version < c3d4d537337f69e405a36fa561e7292ee4148bf7
Status affected
Version d3b18ad31f93d0b6bae105c679018a1ba7daa9ca
Version < a08e780b6cc1153cbff8be55de9ec9da809e344f
Status affected
Version d3b18ad31f93d0b6bae105c679018a1ba7daa9ca
Version < 460e6486617c17dd19abe8f3fc67d9a6fa25f8ca
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 4.20
Status affected
Version 0
Version < 4.20
Status unaffected
Version <= 6.1.*
Version 6.1.189
Status unaffected
Version <= 6.6.*
Version 6.6.158
Status unaffected
Version <= 6.12.*
Version 6.12.111
Status unaffected
Version <= 6.18.*
Version 6.18.53
Status unaffected
Version <= *
Version 7.2
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 0.17% 0.052
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/c3d4d537337f69e405a36fa561e7292ee4148bf7
https://git.kernel.org/stable/c/a08e780b6cc1153cbff8be55de9ec9da809e344f
https://git.kernel.org/stable/c/460e6486617c17dd19abe8f3fc67d9a6fa25f8ca
https://git.kernel.org/stable/c/c4896592744f30ff026f799947c5978bcfd7c8c7
https://git.kernel.org/stable/c/e26aa709454d48c3b3ef8d3100c8a04e7d9fd94e