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CVE-2024-42247— wireguard: allowedips: avoid unaligned 64-bit memory accesses

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 wireguard 模块对未对齐的内存位置进行128位IPv6地址加载，导致内核发出警告。

CVSS 7.5 · High EPSS 0.72% · P53

Possible ATT&CK Techniques 1 AI

T1053 · Scheduled Task/Job

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux e7096c131e5161fa3b8e52a650d7719d2857adfd< ae630de24efb123d7199a43256396d7758f4cb75 affected
e7096c131e5161fa3b8e52a650d7719d2857adfd< b4764f0ad3d68de8a0b847c05f427afb86dd54e6 affected
e7096c131e5161fa3b8e52a650d7719d2857adfd< 217978a29c6ceca76d3c640bf94bdf50c268d801 affected
e7096c131e5161fa3b8e52a650d7719d2857adfd< 6638a203abad35fa636d59ac47bdbc4bc100fd74 affected
e7096c131e5161fa3b8e52a650d7719d2857adfd< 2fb34bf76431e831f9863cd59adc0bd1f67b0fbf affected
e7096c131e5161fa3b8e52a650d7719d2857adfd< 948f991c62a4018fb81d85804eeab3029c6209f8 affected
5.6 affected
< 5.6 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-42247

Vulnerability Information
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Vulnerability Title
wireguard: allowedips: avoid unaligned 64-bit memory accesses
Source: CVE Program / CVE List V5
Vulnerability Description
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]
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 wireguard 模块对未对齐的内存位置进行128位IPv6地址加载，导致内核发出警告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e7096c131e5161fa3b8e52a650d7719d2857adfd ~ ae630de24efb123d7199a43256396d7758f4cb75 -
Linux Linux 5.6 -

II. Public POCs for CVE-2024-42247

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III. Intelligence Information for CVE-2024-42247

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Patches & Fixes for CVE-2024-42247 (1)

Same Patch Batch · Linux · 2024-08-07 · 19 CVEs total

CVE-2024-42232 9.8 CRITICAL libceph: fix race between delayed_work() and ceph_monc_stop()
CVE-2024-42249 7.8 HIGH spi: don't unoptimize message in spi_async()
CVE-2024-42234 7.8 HIGH mm: fix crashes from deferred split racing folio migration
CVE-2024-42233 7.8 HIGH filemap: replace pte_offset_map() with pte_offset_map_nolock()
CVE-2024-42235 7.8 HIGH s390/mm: Add NULL pointer check to crst_table_free() base_crst_free()
CVE-2024-42236 7.8 HIGH usb: gadget: configfs: Prevent OOB read/write in usb_string_copy()
CVE-2024-42250 7.8 HIGH cachefiles: add missing lock protection when polling
CVE-2024-42240 x86/bhi: Avoid warning in #DB handler due to BHI mitigation
CVE-2024-42237 firmware: cs_dsp: Validate payload length before processing block
CVE-2024-42238 firmware: cs_dsp: Return error if block header overflows file
CVE-2024-42239 bpf: Fail bpf_timer_cancel when callback is being cancelled
CVE-2024-42242 mmc: sdhci: Fix max_seg_size for 64KiB PAGE_SIZE
CVE-2024-42241 mm/shmem: disable PMD-sized page cache if needed
CVE-2024-42244 USB: serial: mos7840: fix crash on resume
CVE-2024-42243 mm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray
CVE-2024-42245 Revert "sched/fair: Make sure to try to detach at least one movable task"
CVE-2024-42246 net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket
CVE-2024-42248 tty: serial: ma35d1: Add a NULL check for of_node

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42247

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