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CVE-2025-37973— wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation

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，该漏洞源于多链接元素碎片整理计算错误，可能导致越界访问。

CVSS 8.1 · High EPSS 0.24% · P14

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 2481b5da9c6b2ee1fde55a1c29eb2ca377145a10< 73dde269a1a43e6b1aa92eba13ad2df58bfdd38e affected
2481b5da9c6b2ee1fde55a1c29eb2ca377145a10< 9423f6da825172b8dc60d4688ed3d147291c3be9 affected
2481b5da9c6b2ee1fde55a1c29eb2ca377145a10< e1c6d0c6199bd5f4cfc7a66ae7032b6e805f904d affected
2481b5da9c6b2ee1fde55a1c29eb2ca377145a10< 023c1f2f0609218103cbcb48e0104b144d4a16dc affected
6.5 affected
< 6.5 unaffected
6.6.91≤ 6.6.* unaffected
6.12.29≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-37973

Vulnerability Information
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Vulnerability Title
wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation Currently during the multi-link element defragmentation process, the multi-link element length added to the total IEs length when calculating the length of remaining IEs after the multi-link element in cfg80211_defrag_mle(). This could lead to out-of-bounds access if the multi-link element or its corresponding fragment elements are the last elements in the IEs buffer. To address this issue, correctly calculate the remaining IEs length by deducting the multi-link element end offset from total IEs end offset.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/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，该漏洞源于多链接元素碎片整理计算错误，可能导致越界访问。
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 2481b5da9c6b2ee1fde55a1c29eb2ca377145a10 ~ 73dde269a1a43e6b1aa92eba13ad2df58bfdd38e -
Linux Linux 6.5 -

II. Public POCs for CVE-2025-37973

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III. Intelligence Information for CVE-2025-37973

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Same Patch Batch · Linux · 2025-05-20 · 95 CVEs total

CVE-2025-37894 9.8 CRITICAL net: use sock_gen_put() when sk_state is TCP_TIME_WAIT
CVE-2025-37924 9.8 CRITICAL ksmbd: fix use-after-free in kerberos authentication
CVE-2025-37935 9.8 CRITICAL net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM
CVE-2025-37959 9.4 CRITICAL bpf: Scrub packet on bpf_redirect_peer
CVE-2025-37926 8.8 HIGH ksmbd: fix use-after-free in ksmbd_session_rpc_open
CVE-2025-37899 8.8 HIGH ksmbd: fix use-after-free in session logoff
CVE-2025-37918 8.8 HIGH Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()
CVE-2025-37943 8.8 HIGH wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi
CVE-2025-37944 8.8 HIGH wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process
CVE-2025-37947 8.8 HIGH ksmbd: prevent out-of-bounds stream writes by validating *pos
CVE-2025-37952 8.8 HIGH ksmbd: Fix UAF in __close_file_table_ids
CVE-2025-37956 8.8 HIGH ksmbd: prevent rename with empty string
CVE-2025-37957 8.8 HIGH KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
CVE-2025-37936 8.7 HIGH perf/x86/intel: KVM: Mask PEBS_ENABLE loaded for guest with vCPU's value.
CVE-2025-37903 7.8 HIGH drm/amd/display: Fix slab-use-after-free in hdcp
CVE-2025-37901 7.8 HIGH irqchip/qcom-mpm: Prevent crash when trying to handle non-wake GPIOs
CVE-2025-37921 7.8 HIGH vxlan: vnifilter: Fix unlocked deletion of default FDB entry
CVE-2025-37906 7.8 HIGH ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd
CVE-2025-37920 7.8 HIGH xsk: Fix race condition in AF_XDP generic RX path
CVE-2025-37923 7.8 HIGH tracing: Fix oob write in trace_seq_to_buffer()

Showing top 20 of 95 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37973

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