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CVE-2025-38514— rxrpc: Fix oops due to non-existence of prealloc backlog struct

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rxrpc在预分配积压结构不存在时崩溃，可能导致调用中止。

CVSS 7.5 · High EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 248f219cb8bcbfbd7f132752d44afa2df7c241d1< bf0ca6a1bc4fb904b598137c6718785a107e3adf affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1< f7afb3ff01c42c49e8a143cdce400b95844bb506 affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1< f5e72b7824d08c206ce106d30cb37c4642900ccc affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1< 0eef29385d715d4c7fd707b18d4a9b76c76dd5e6 affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1< efc1b2b7c1a308b60df8f36bc2d7ce16d3999364 affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1< d1ff5f9d2c5405681457262e23c720b08977c11f affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1< 2c2e9ebeb036f9b1b09325ec5cfdfe0e78f357c3 affected
248f219cb8bcbfbd7f132752d44afa2df7c241d1< 880a88f318cf1d2a0f4c0a7ff7b07e2062b434a4 affected
… +10 more rows
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I. Basic Information for CVE-2025-38514

Vulnerability Information
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Vulnerability Title
rxrpc: Fix oops due to non-existence of prealloc backlog struct
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix oops due to non-existence of prealloc backlog struct If an AF_RXRPC service socket is opened and bound, but calls are preallocated, then rxrpc_alloc_incoming_call() will oops because the rxrpc_backlog struct doesn't get allocated until the first preallocation is made. Fix this by returning NULL from rxrpc_alloc_incoming_call() if there is no backlog struct. This will cause the incoming call to be aborted.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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rxrpc在预分配积压结构不存在时崩溃，可能导致调用中止。
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 248f219cb8bcbfbd7f132752d44afa2df7c241d1 ~ bf0ca6a1bc4fb904b598137c6718785a107e3adf -
Linux Linux 4.9 -

II. Public POCs for CVE-2025-38514

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III. Intelligence Information for CVE-2025-38514

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Same Patch Batch · Linux · 2025-08-16 · 59 CVEs total

CVE-2025-38533 9.8 CRITICAL net: libwx: fix the using of Rx buffer DMA
CVE-2025-38527 9.8 CRITICAL smb: client: fix use-after-free in cifs_oplock_break
CVE-2025-38552 9.4 CRITICAL mptcp: plug races between subflow fail and subflow creation
CVE-2023-3867 9.1 CRITICAL ksmbd: fix out of bounds read in smb2_sess_setup
CVE-2023-4515 9.1 CRITICAL ksmbd: validate command request size
CVE-2023-32249 9.1 CRITICAL ksmbd: not allow guest user on multichannel
CVE-2025-38512 8.8 HIGH wifi: prevent A-MSDU attacks in mesh networks
CVE-2025-38511 8.8 HIGH drm/xe/pf: Clear all LMTT pages on alloc
CVE-2023-4130 8.1 HIGH ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
CVE-2023-3865 8.1 HIGH ksmbd: fix out-of-bound read in smb2_write
CVE-2025-38550 7.8 HIGH ipv6: mcast: Delay put pmc->idev in mld_del_delrec()
CVE-2025-38502 7.8 HIGH bpf: Fix oob access in cgroup local storage
CVE-2025-38532 7.8 HIGH net: libwx: properly reset Rx ring descriptor
CVE-2025-38542 7.8 HIGH net: appletalk: Fix device refcount leak in atrtr_create()
CVE-2025-38536 7.8 HIGH net: airoha: fix potential use-after-free in airoha_npu_get()
CVE-2025-38539 7.8 HIGH tracing: Add down_write(trace_event_sem) when adding trace event
CVE-2025-38501 7.5 HIGH ksmbd: limit repeated connections from clients with the same IP
CVE-2025-38523 7.5 HIGH cifs: Fix the smbd_response slab to allow usercopy
CVE-2025-38526 7.5 HIGH ice: add NULL check in eswitch lag check
CVE-2025-38524 7.5 HIGH rxrpc: Fix recv-recv race of completed call

Showing top 20 of 59 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38514

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