wireguard: netlink: access device through ctx instead of peer

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Summary

CVECVE-2024-26950
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-01 06:15:11 UTC
Updated2026-05-12 12:16:27 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wireguard: netlink: access device through ctx instead of peer The previous commit fixed a bug that led to a NULL peer->device being dereferenced. It's actually easier and faster performance-wise to instead get the device from ctx->wg. This semantically makes more sense too, since ctx->wg->peer_allowedips.seq is compared with ctx->allowedips_seq, basing them both in ctx. This also acts as a defence in depth provision against freed peers.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from ADP

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476 | CWE-noinfo Not enough information

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 493aa6bdcffd90a4f82aa614fe4f4db0641b4068 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 4be453271a882c8ebc28df3dbf9e4d95e6ac42f5 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 09c3fa70f65175861ca948cb2f0f791e666c90e5 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd c991567e6c638079304cc15dff28748e4a3c4a37 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 93bcc1752c69bb309f4d8cfaf960ef1faeb34996 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd d44bd323d8bb8031eef4bdc44547925998a11e47 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 71cbd32e3db82ea4a74e3ef9aeeaa6971969c86f git Not specified
CNA Linux Linux affected 5.6 Not specified
CNA Linux Linux unaffected 5.6 semver Not specified
CNA Linux Linux unaffected 5.10.215 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.154 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.84 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.24 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.12 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8.3 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
git.kernel.org/stable/c/93bcc1752c69bb309f4d8cfaf960ef1faeb34996 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/493aa6bdcffd90a4f82aa614fe4f4db0641b4068 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/4be453271a882c8ebc28df3dbf9e4d95e6ac42f5 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/09c3fa70f65175861ca948cb2f0f791e666c90e5 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/c991567e6c638079304cc15dff28748e4a3c4a37 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/d44bd323d8bb8031eef4bdc44547925998a11e47 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/71cbd32e3db82ea4a74e3ef9aeeaa6971969c86f af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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