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CVE-2025-40331— sctp: Prevent TOCTOU out-of-bounds write

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，该漏洞源于未正确检查边界，可能导致越界写入。

CVSS 7.8 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8f840e47f190cbe61a96945c13e9551048d42cef< b106a68df0650b694b254427cd9250c04500edd3 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 3006959371007fc2eae4a078f823c680fa52de1a affected
8f840e47f190cbe61a96945c13e9551048d42cef< 72e3fea68eac8d088e44c3dd954e843478e9240e affected
8f840e47f190cbe61a96945c13e9551048d42cef< 584307275b2048991b2e8984962189b6cc0a9b85 affected
8f840e47f190cbe61a96945c13e9551048d42cef< c9119f243d9c0da3c3b5f577a328de3e7ffd1b42 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 2fe08fcaacb7eb019fa9c81db39b2214de216677 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 89eac1e150dbd42963e13d23828cb8c4e0763196 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 95aef86ab231f047bb8085c70666059b58f53c09 affected
… +10 more rows
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I. Basic Information for CVE-2025-40331

Vulnerability Information
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Vulnerability Title
sctp: Prevent TOCTOU out-of-bounds write
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sctp: Prevent TOCTOU out-of-bounds write For the following path not holding the sock lock, sctp_diag_dump() -> sctp_for_each_endpoint() -> sctp_ep_dump() make sure not to exceed bounds in case the address list has grown between buffer allocation (time-of-check) and write (time-of-use).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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，该漏洞源于未正确检查边界，可能导致越界写入。
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 8f840e47f190cbe61a96945c13e9551048d42cef ~ b106a68df0650b694b254427cd9250c04500edd3 -
Linux Linux 4.7 -

II. Public POCs for CVE-2025-40331

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III. Intelligence Information for CVE-2025-40331

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Same Patch Batch · Linux · 2025-12-09 · 152 CVEs total

CVE-2025-40343 9.8 CRITICAL nvmet-fc: avoid scheduling association deletion twice
CVE-2022-50666 9.8 CRITICAL RDMA/siw: Fix QP destroy to wait for all references dropped.
CVE-2023-53794 9.8 CRITICAL cifs: fix session state check in reconnect to avoid use-after-free issue
CVE-2025-40336 8.8 HIGH drm/gpusvm: fix hmm_pfn_to_map_order() usage
CVE-2025-40328 8.8 HIGH smb: client: fix potential UAF in smb2_close_cached_fid()
CVE-2023-53822 8.8 HIGH wifi: ath11k: Ignore frags from uninitialized peer in dp.
CVE-2023-53785 8.8 HIGH mt76: mt7921: don't assume adequate headroom for SDIO headers
CVE-2025-40342 8.8 HIGH nvme-fc: use lock accessing port_state and rport state
CVE-2023-53827 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}
CVE-2023-53851 8.4 HIGH drm/msm/dp: Drop aux devices together with DP controller
CVE-2025-40337 8.2 HIGH net: stmmac: Correctly handle Rx checksum offload errors
CVE-2023-53803 8.1 HIGH scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
CVE-2022-50656 8.1 HIGH nfc: pn533: Clear nfc_target before being used
CVE-2023-53816 7.8 HIGH drm/amdkfd: fix potential kgd_mem UAFs
CVE-2023-53790 7.8 HIGH bpf: Zeroing allocated object from slab in bpf memory allocator
CVE-2023-53819 7.8 HIGH amdgpu: validate offset_in_bo of drm_amdgpu_gem_va
CVE-2025-40344 7.8 HIGH ASoC: Intel: avs: Disable periods-elapsed work when closing PCM
CVE-2023-53795 7.8 HIGH iommufd: IOMMUFD_DESTROY should not increase the refcount
CVE-2023-53810 7.8 HIGH blk-mq: release crypto keyslot before reporting I/O complete
CVE-2023-53806 7.8 HIGH drm/amd/display: populate subvp cmd info only for the top pipe

Showing top 20 of 152 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40331

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