CVE-2025-38649
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-22

Last updated on: 2025-11-26

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: arm64: dts: qcom: qcs615: fix a crash issue caused by infinite loop for Coresight An infinite loop has been created by the Coresight devices. When only a source device is enabled, the coresight_find_activated_sysfs_sink function is recursively invoked in an attempt to locate an active sink device, ultimately leading to a stack overflow and system crash. Therefore, disable the replicator1 to break the infinite loop and prevent a potential stack overflow. replicator1_out -> funnel_swao_in6 -> tmc_etf_swao_in -> tmc_etf_swao_out | | replicator1_in replicator_swao_in | | replicator0_out1 replicator_swao_out0 | | replicator0_in funnel_in1_in3 | | tmc_etf_out <- tmc_etf_in <- funnel_merg_out <- funnel_merg_in1 <- funnel_in1_out [call trace] dump_backtrace+0x9c/0x128 show_stack+0x20/0x38 dump_stack_lvl+0x48/0x60 dump_stack+0x18/0x28 panic+0x340/0x3b0 nmi_panic+0x94/0xa0 panic_bad_stack+0x114/0x138 handle_bad_stack+0x34/0xb8 __bad_stack+0x78/0x80 coresight_find_activated_sysfs_sink+0x28/0xa0 [coresight] coresight_find_activated_sysfs_sink+0x5c/0xa0 [coresight] coresight_find_activated_sysfs_sink+0x5c/0xa0 [coresight] coresight_find_activated_sysfs_sink+0x5c/0xa0 [coresight] coresight_find_activated_sysfs_sink+0x5c/0xa0 [coresight] ... coresight_find_activated_sysfs_sink+0x5c/0xa0 [coresight] coresight_enable_sysfs+0x80/0x2a0 [coresight] side effect after the change: Only trace data originating from AOSS can reach the ETF_SWAO and EUD sinks.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-08-22
Last Modified
2025-11-26
Generated
2026-06-16
AI Q&A
2025-08-22
EPSS Evaluated
2026-06-15
NVD
CVE-2025-38649
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-835 The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is an infinite loop in the Linux kernel's Coresight device handling on the arm64 architecture for the qcom qcs615 platform. When only a source device is enabled, the function coresight_find_activated_sysfs_sink recursively calls itself trying to find an active sink device, causing a stack overflow and system crash. The fix disables replicator1 to break this infinite loop and prevent the crash.

Impact Analysis

This vulnerability can cause the system to crash due to a stack overflow triggered by an infinite loop in the Coresight device handling. This can lead to denial of service or instability on affected devices running the vulnerable Linux kernel on the specified platform.

Mitigation Strategies

To mitigate this vulnerability, disable the replicator1 device to break the infinite loop and prevent a potential stack overflow and system crash. This change ensures that only trace data originating from AOSS can reach the ETF_SWAO and EUD sinks, avoiding the problematic recursive calls.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2025-38649. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart