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CVE-2025-38671— i2c: qup: jump out of the loop in case of timeout

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超时，可能导致拒绝服务。

AI Predicted 6.5 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux fbfab1ab065879370541caf0e514987368eb41b2< cbec4406998185e0311ae97dfacc649f9cd79b0b affected
fbfab1ab065879370541caf0e514987368eb41b2< acfa2948be630ad857535cb36153697f3cbf9ca9 affected
fbfab1ab065879370541caf0e514987368eb41b2< d05ec13aa3eb868a60dc961b489053a643863ddc affected
fbfab1ab065879370541caf0e514987368eb41b2< c523bfba46c4b4d7676fb050909533a766698ecd affected
fbfab1ab065879370541caf0e514987368eb41b2< 0d33913fce67a93c1eb83396c3c9d6b411dcab33 affected
fbfab1ab065879370541caf0e514987368eb41b2< 42c4471b30fa203249f476dd42321cd7efb7f6a8 affected
fbfab1ab065879370541caf0e514987368eb41b2< 89459f168b78e5c801dc8b7ad037b62898bc4f57 affected
fbfab1ab065879370541caf0e514987368eb41b2< a7982a14b3012527a9583d12525cd0dc9f8d8934 affected
… +10 more rows
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I. Basic Information for CVE-2025-38671

Vulnerability Information
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Vulnerability Title
i2c: qup: jump out of the loop in case of timeout
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: i2c: qup: jump out of the loop in case of timeout Original logic only sets the return value but doesn't jump out of the loop if the bus is kept active by a client. This is not expected. A malicious or buggy i2c client can hang the kernel in this case and should be avoided. This is observed during a long time test with a PCA953x GPIO extender. Fix it by changing the logic to not only sets the return value, but also jumps out of the loop and return to the caller with -ETIMEDOUT.
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，该漏洞源于未正确处理超时，可能导致拒绝服务。
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 fbfab1ab065879370541caf0e514987368eb41b2 ~ cbec4406998185e0311ae97dfacc649f9cd79b0b -
Linux Linux 4.17 -

II. Public POCs for CVE-2025-38671

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III. Intelligence Information for CVE-2025-38671

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Patches & Fixes for CVE-2025-38671 (1)

Same Patch Batch · Linux · 2025-08-22 · 60 CVEs total

CVE-2025-38660 9.8 CRITICAL [ceph] parse_longname(): strrchr() expects NUL-terminated string
CVE-2025-38658 8.8 HIGH nvmet: pci-epf: Do not complete commands twice if nvmet_req_init() fails
CVE-2025-38643 8.8 HIGH wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()
CVE-2024-58239 8.2 HIGH tls: stop recv() if initial process_rx_list gave us non-DATA
CVE-2025-38675 7.8 HIGH xfrm: state: initialize state_ptrs earlier in xfrm_state_find
CVE-2025-38627 7.8 HIGH f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic
CVE-2025-38653 7.8 HIGH proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al
CVE-2025-38659 7.8 HIGH gfs2: No more self recovery
CVE-2025-38640 7.8 HIGH bpf: Disable migration in nf_hook_run_bpf().
CVE-2025-38656 7.8 HIGH wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()
CVE-2025-38617 7.8 HIGH net/packet: fix a race in packet_set_ring() and packet_notifier()
CVE-2025-38618 7.8 HIGH vsock: Do not allow binding to VMADDR_PORT_ANY
CVE-2025-38670 7.8 HIGH arm64/entry: Mask DAIF in cpu_switch_to(), call_on_irq_stack()
CVE-2025-38616 7.8 HIGH tls: handle data disappearing from under the TLS ULP
CVE-2025-38619 7.8 HIGH media: ti: j721e-csi2rx: fix list_del corruption
CVE-2025-38667 7.8 HIGH iio: fix potential out-of-bound write
CVE-2025-38652 7.3 HIGH f2fs: fix to avoid out-of-boundary access in devs.path
CVE-2025-38657 7.3 HIGH wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch()
CVE-2025-38639 7.1 HIGH netfilter: xt_nfacct: don't assume acct name is null-terminated
CVE-2025-38662 7.1 HIGH ASoC: mediatek: mt8365-dai-i2s: pass correct size to mt8365_dai_set_priv

Showing top 20 of 60 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux