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CVE-2025-40364— io_uring: fix io_req_prep_async with provided buffers

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，该漏洞源于未正确处理异步请求缓冲区，可能导致数据损坏。

CVSS 7.8 · High EPSS 0.29% · P19

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux c7fb19428d67dd0a2a78a4f237af01d39c78dc5a< 233b210a678bddf8b49b02a070074a52b87e6d43 affected
c7fb19428d67dd0a2a78a4f237af01d39c78dc5a< a1b17713b32c75a90132ea2f92b1257f3bbc20f3 affected
c7fb19428d67dd0a2a78a4f237af01d39c78dc5a< b86f1d51731e621e83305dc9564ae14c9ef752bf affected
c7fb19428d67dd0a2a78a4f237af01d39c78dc5a< a94592ec30ff67dc36c424327f1e0a9ceeeb9bd3 affected
c7fb19428d67dd0a2a78a4f237af01d39c78dc5a< 35ae7910c349fb3c60439992e2e0e79061e95382 affected
c7fb19428d67dd0a2a78a4f237af01d39c78dc5a< f0ef94553868d07c1b14d7743a7e2553e5a831a3 affected
c7fb19428d67dd0a2a78a4f237af01d39c78dc5a< d63b0e8a628e62ca85a0f7915230186bb92f8bb4 affected
5.19 affected
… +6 more rows
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I. Basic Information for CVE-2025-40364

Vulnerability Information
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Vulnerability Title
io_uring: fix io_req_prep_async with provided buffers
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix io_req_prep_async with provided buffers io_req_prep_async() can import provided buffers, commit the ring state by giving up on that before, it'll be reimported later if needed.
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，该漏洞源于未正确处理异步请求缓冲区，可能导致数据损坏。
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 c7fb19428d67dd0a2a78a4f237af01d39c78dc5a ~ 233b210a678bddf8b49b02a070074a52b87e6d43 -
Linux Linux 5.19 -

II. Public POCs for CVE-2025-40364

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III. Intelligence Information for CVE-2025-40364

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Patches & Fixes for CVE-2025-40364 (4)

Same Patch Batch · Linux · 2025-04-18 · 23 CVEs total

CVE-2025-39930 8.4 HIGH ASoC: simple-card-utils: Don't use __free(device_node) at graph_util_parse_dai()
CVE-2025-37785 7.8 HIGH ext4: fix OOB read when checking dotdot dir
CVE-2025-37893 7.8 HIGH LoongArch: BPF: Fix off-by-one error in build_prologue()
CVE-2025-37838 7.8 HIGH HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Con
CVE-2025-39688 7.5 HIGH nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
CVE-2025-39735 7.1 HIGH jfs: fix slab-out-of-bounds read in ea_get()
CVE-2025-38479 dmaengine: fsl-edma: free irq correctly in remove path
CVE-2025-40325 md/raid10: wait barrier before returning discard request with REQ_NOWAIT
CVE-2025-37860 sfc: fix NULL dereferences in ef100_process_design_param()
CVE-2025-37925 jfs: reject on-disk inodes of an unsupported type
CVE-2025-40114 iio: light: Add check for array bounds in veml6075_read_int_time_ms
CVE-2025-38049 x86/resctrl: Fix allocation of cleanest CLOSID on platforms with no monitors
CVE-2025-38104 drm/amdgpu: Replace Mutex with Spinlock for RLCG register access to avoid Priority Inversi
CVE-2025-38152 remoteproc: core: Clear table_sz when rproc_shutdown
CVE-2025-38240 drm/mediatek: dp: drm_err => dev_err in HPD path to avoid NULL ptr
CVE-2025-39989 x86/mce: use is_copy_from_user() to determine copy-from-user context
CVE-2025-38575 ksmbd: use aead_request_free to match aead_request_alloc
CVE-2025-40014 objtool, spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq()
CVE-2025-38637 net_sched: skbprio: Remove overly strict queue assertions
CVE-2025-39728 clk: samsung: Fix UBSAN panic in samsung_clk_init()

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40364

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