wireguard: allowedips: avoid unaligned 64-bit memory accesses
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.
Summary
In 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]
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.6 and later | 5.10.222, 5.15.163, 6.1.100, 6.6.41, 6.9.10, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 5.6 and later Fixed in 5.10.222, 5.15.163, 6.1.100, 6.6.41, 6.9.10, 6.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.6 to before 5.10.222; 5.11 to before 5.15.163; 5.16 to before 6.1.100; 6.2 to before 6.6.41; 6.7 to before 6.9.10 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.6 to before 5.10.222; 5.11 to before 5.15.163; 5.16 to before 6.1.100; 6.2 to before 6.6.41; 6.7 to before 6.9.10 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.222, 5.15.163, 6.1.100, 6.6.41, 6.9.10, 6.10
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-42247
- 2026-10-03 Alias added: GHSA-m475-c2qh-xg8v
References
Patch 6
- https://git.kernel.org/stable/c/ae630de24efb123d7199a43256396d7758f4cb75
- https://git.kernel.org/stable/c/b4764f0ad3d68de8a0b847c05f427afb86dd54e6
- https://git.kernel.org/stable/c/217978a29c6ceca76d3c640bf94bdf50c268d801
- https://git.kernel.org/stable/c/6638a203abad35fa636d59ac47bdbc4bc100fd74
- https://git.kernel.org/stable/c/2fb34bf76431e831f9863cd59adc0bd1f67b0fbf
- https://git.kernel.org/stable/c/948f991c62a4018fb81d85804eeab3029c6209f8
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-42247 · CVE Program
- CVE-2024-42247 · NVD
- FIRST EPSS
- GHSA-m475-c2qh-xg8v · GitHub Advisory Database · CC BY 4.0
- CVE-2024-42247 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences