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CVE-2025-21997— xsk: fix an integer overflow in xp_create_and_assign_umem()

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，该漏洞源于整数溢出问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 94033cd8e73b8632bab7c8b7bb54caa4f5616db7< 205649d642a5b376724f04f3a5b3586815e43d3b affected
94033cd8e73b8632bab7c8b7bb54caa4f5616db7< b7b4be1fa43294b50b22e812715198629806678a affected
94033cd8e73b8632bab7c8b7bb54caa4f5616db7< 130290f44bce0eead2b827302109afc3fe189ddd affected
94033cd8e73b8632bab7c8b7bb54caa4f5616db7< c7670c197b0f1a8726ad5c87bc2bf001a1fc1bbd affected
94033cd8e73b8632bab7c8b7bb54caa4f5616db7< 559847f56769037e5b2e0474d3dbff985b98083d affected
5.16 affected
< 5.16 unaffected
6.1.132≤ 6.1.* unaffected
… +4 more rows
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I. Basic Information for CVE-2025-21997

Vulnerability Information
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Vulnerability Title
xsk: fix an integer overflow in xp_create_and_assign_umem()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xsk: fix an integer overflow in xp_create_and_assign_umem() Since the i and pool->chunk_size variables are of type 'u32', their product can wrap around and then be cast to 'u64'. This can lead to two different XDP buffers pointing to the same memory area. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于整数溢出问题。
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 94033cd8e73b8632bab7c8b7bb54caa4f5616db7 ~ 205649d642a5b376724f04f3a5b3586815e43d3b -
Linux Linux 5.16 -

II. Public POCs for CVE-2025-21997

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III. Intelligence Information for CVE-2025-21997

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Patches & Fixes for CVE-2025-21997 (2)

Same Patch Batch · Linux · 2025-04-03 · 13 CVEs total

CVE-2025-22004 8.6 HIGH net: atm: fix use after free in lec_send()
CVE-2025-22001 7.8 HIGH accel/qaic: Fix integer overflow in qaic_validate_req()
CVE-2025-21999 7.8 HIGH proc: fix UAF in proc_get_inode()
CVE-2025-22007 Bluetooth: Fix error code in chan_alloc_skb_cb()
CVE-2025-22006 net: ethernet: ti: am65-cpsw: Fix NAPI registration sequence
CVE-2025-22005 ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().
CVE-2025-22003 can: ucan: fix out of bound read in strscpy() source
CVE-2025-22002 netfs: Call `invalidate_cache` only if implemented
CVE-2025-22000 mm/huge_memory: drop beyond-EOF folios with the right number of refs
CVE-2025-21998 firmware: qcom: uefisecapp: fix efivars registration race
CVE-2025-21996 drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()
CVE-2025-21995 drm/sched: Fix fence reference count leak

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21997

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