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CVE-2025-22004— net: atm: fix use after free in lec_send()

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lec_send函数存在释放后重用问题。

CVSS 8.6 · High EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 50e288097c2c6e5f374ae079394436fc29d1e88e affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8cd90c7db08f32829bfa1b5b2b11fbc542afbab7 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 82d9084a97892de1ee4881eb5c17911fcd9be6f6 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 51e8be9578a2e74f9983d8fd8de8cafed191f30c affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9566f6ee13b17a15d0a47667ad1b1893c539f730 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 326223182e4703cde99fdbd36d07d0b3de9980fb affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f3271f7548385e0096739965961c7cbf7e6b4762 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f3009d0d6ab78053117f8857b921a8237f4d17b3 affected
… +10 more rows
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I. Basic Information for CVE-2025-22004

Vulnerability Information
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Vulnerability Title
net: atm: fix use after free in lec_send()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: atm: fix use after free in lec_send() The ->send() operation frees skb so save the length before calling ->send() to avoid a use after free.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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lec_send函数存在释放后重用问题。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 50e288097c2c6e5f374ae079394436fc29d1e88e -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2025-22004

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III. Intelligence Information for CVE-2025-22004

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Patches & Fixes for CVE-2025-22004 (3)

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

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-2025-21997 xsk: fix an integer overflow in xp_create_and_assign_umem()
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-2025-22004

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