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CVE-2025-38252— cxl/ras: Fix CPER handler device confusion

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cxl ras CPER处理程序设备混淆。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 36f257e3b0ba904f5a4e7fa8dafaa60e88cdd28c< 4bcb8dd36e9e3fad6c22862ac5b6993df838309b affected
36f257e3b0ba904f5a4e7fa8dafaa60e88cdd28c< 3c70ec71abdaf4e4fa48cd8fdfbbd864d78235a8 affected
6.15 affected
< 6.15 unaffected
6.15.5≤ 6.15.* unaffected
6.16≤ * unaffected
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I. Basic Information for CVE-2025-38252

Vulnerability Information
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Vulnerability Title
cxl/ras: Fix CPER handler device confusion
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cxl/ras: Fix CPER handler device confusion By inspection, cxl_cper_handle_prot_err() is making a series of fragile assumptions that can lead to crashes: 1/ It assumes that endpoints identified in the record are a CXL-type-3 device, nothing guarantees that. 2/ It assumes that the device is bound to the cxl_pci driver, nothing guarantees that. 3/ Minor, it holds the device lock over the switch-port tracing for no reason as the trace is 100% generated from data in the record. Correct those by checking that the PCIe endpoint parents a cxl_memdev before assuming the format of the driver data, and move the lock to where it is required. Consequently this also makes the implementation ready for CXL accelerators that are not bound to cxl_pci.
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cxl ras CPER处理程序设备混淆。
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 36f257e3b0ba904f5a4e7fa8dafaa60e88cdd28c ~ 4bcb8dd36e9e3fad6c22862ac5b6993df838309b -
Linux Linux 6.15 -

II. Public POCs for CVE-2025-38252

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2025-38252

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Same Patch Batch · Linux · 2025-07-09 · 26 CVEs total

CVE-2025-38264 9.8 CRITICAL nvme-tcp: sanitize request list handling
CVE-2025-38246 9.8 CRITICAL bnxt: properly flush XDP redirect lists
CVE-2025-38238 8.8 HIGH scsi: fnic: Fix crash in fnic_wq_cmpl_handler when FDMI times out
CVE-2025-38253 8.8 HIGH HID: wacom: fix crash in wacom_aes_battery_handler()
CVE-2025-38242 7.8 HIGH mm: userfaultfd: fix race of userfaultfd_move and swap cache
CVE-2025-38261 7.8 HIGH riscv: save the SR_SUM status over switches
CVE-2025-38262 7.8 HIGH tty: serial: uartlite: register uart driver in init
CVE-2025-38248 7.8 HIGH bridge: mcast: Fix use-after-free during router port configuration
CVE-2025-38250 7.8 HIGH Bluetooth: hci_core: Fix use-after-free in vhci_flush()
CVE-2025-38244 7.5 HIGH smb: client: fix potential deadlock when reconnecting channels
CVE-2025-38239 7.3 HIGH scsi: megaraid_sas: Fix invalid node index
CVE-2025-38257 7.3 HIGH s390/pkey: Prevent overflow in size calculation for memdup_user()
CVE-2025-38251 atm: clip: prevent NULL deref in clip_push()
CVE-2025-38249 ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()
CVE-2025-38254 drm/amd/display: Add sanity checks for drm_edid_raw()
CVE-2025-38255 lib/group_cpus: fix NULL pointer dereference from group_cpus_evenly()
CVE-2025-38256 io_uring/rsrc: fix folio unpinning
CVE-2025-38247 userns and mnt_idmap leak in open_tree_attr(2)
CVE-2025-38258 mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write
CVE-2025-38259 ASoC: codecs: wcd9335: Fix missing free of regulator supplies

Showing top 20 of 26 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38252

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