wireguard: allowedips: avoid unaligned 64-bit memory accesses

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-42247
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-08-07 16:15:47 UTC
Updated2026-08-04 11:19:41 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wireguard: allowedips: avoid unaligned 64-bit memory accesses On the parisc platform, the kernel issues kernel warnings because swap_endian() tries to load a 128-bit IPv6 address from an unaligned memory location: Kernel: unaligned access to 0x55f4688c in wg_allowedips_insert_v6+0x2c/0x80 [wireguard] (iir 0xf3010df) Kernel: unaligned access to 0x55f46884 in wg_allowedips_insert_v6+0x38/0x80 [wireguard] (iir 0xf2010dc) Avoid such unaligned memory accesses by instead using the get_unaligned_be64() helper macro. [Jason: replace src[8] in original patch with src+8]

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-770

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/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 ae630de24efb123d7199a43256396d7758f4cb75 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd b4764f0ad3d68de8a0b847c05f427afb86dd54e6 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 217978a29c6ceca76d3c640bf94bdf50c268d801 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 6638a203abad35fa636d59ac47bdbc4bc100fd74 git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 2fb34bf76431e831f9863cd59adc0bd1f67b0fbf git Not specified
CNA Linux Linux affected e7096c131e5161fa3b8e52a650d7719d2857adfd 948f991c62a4018fb81d85804eeab3029c6209f8 git Not specified
CNA Linux Linux affected 5.6 Not specified
CNA Linux Linux unaffected 5.6 semver Not specified
CNA Linux Linux unaffected 5.10.222 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.163 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.100 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.41 6.6.* semver Not specified
CNA Linux Linux unaffected 6.9.10 6.9.* semver Not specified
CNA Linux Linux unaffected 6.10 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/217978a29c6ceca76d3c640bf94bdf50c268d801 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/948f991c62a4018fb81d85804eeab3029c6209f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ae630de24efb123d7199a43256396d7758f4cb75 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b4764f0ad3d68de8a0b847c05f427afb86dd54e6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2fb34bf76431e831f9863cd59adc0bd1f67b0fbf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/01/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/6638a203abad35fa636d59ac47bdbc4bc100fd74 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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