CVE-2025-21914

slimbus: messaging: Free transaction ID in delayed interrupt scenario

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved: slimbus: messaging: Free transaction ID in delayed interrupt scenario In case of interrupt delay for any reason, slim_do_transfer()
returns timeout error but the transaction ID (TID) is not freed.
This results into invalid memory access inside
qcom_slim_ngd_rx_msgq_cb() due to invalid TID. Fix the issue by freeing the TID in slim_do_transfer() before
returning timeout error to avoid invalid memory access. Call trace:
__memcpy_fromio+0x20/0x190
qcom_slim_ngd_rx_msgq_cb+0x130/0x290 [slim_qcom_ngd_ctrl]
vchan_complete+0x2a0/0x4a0
tasklet_action_common+0x274/0x700
tasklet_action+0x28/0x3c
_stext+0x188/0x620
run_ksoftirqd+0x34/0x74
smpboot_thread_fn+0x1d8/0x464
kthread+0x178/0x238
ret_from_fork+0x10/0x20
Code: aa0003e8 91000429 f100044a 3940002b (3800150b)
---[ end trace 0fe00bec2b975c99 ]---
Kernel panic - not syncing: Oops: Fatal exception in interrupt.

In the Linux kernel, the following vulnerability has been resolved: slimbus: messaging: Free transaction ID in delayed interrupt scenario In case of interrupt delay for any reason, slim_do_transfer() returns timeout error but the transaction ID (TID) is not freed. This results into invalid memory access inside qcom_slim_ngd_rx_msgq_cb() due to invalid TID. Fix the issue by freeing the TID in slim_do_transfer() before returning timeout error to avoid invalid memory access. Call trace: __memcpy_fromio+0x20/0x190 qcom_slim_ngd_rx_msgq_cb+0x130/0x290 [slim_qcom_ngd_ctrl] vchan_complete+0x2a0/0x4a0 tasklet_action_common+0x274/0x700 tasklet_action+0x28/0x3c _stext+0x188/0x620 run_ksoftirqd+0x34/0x74 smpboot_thread_fn+0x1d8/0x464 kthread+0x178/0x238 ret_from_fork+0x10/0x20 Code: aa0003e8 91000429 f100044a 3940002b (3800150b) ---[ end trace 0fe00bec2b975c99 ]--- Kernel panic - not syncing: Oops: Fatal exception in interrupt.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2024-12-29 CVE Reserved
2025-04-01 CVE Published
2025-05-03 EPSS Updated
2025-05-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (9)

URL	Tag	Source
https://git.kernel.org/stable/c/afbdcc7c384b0d446da08b1e0901dc176b41b9e0	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/cec8c0ac173fe5321f03fdb1a09a9cb69bc9a9fe	2025-03-13
https://git.kernel.org/stable/c/a32e5198a9134772eb03f7b72a7849094c55bda9	2025-03-13
https://git.kernel.org/stable/c/09d34c4cbc38485c7514069f25348e439555b282	2025-03-13
https://git.kernel.org/stable/c/18ae4cee05c310c299ba75d7477dcf34be67aa16	2025-03-13
https://git.kernel.org/stable/c/faac8e894014e8167471a8e4a5eb35a8fefbb82a	2025-03-13
https://git.kernel.org/stable/c/6abf3d8bb51cbaf886c3f08109a0462890b10db6	2025-03-13
https://git.kernel.org/stable/c/0c541c8f6da23e0b92f0a6216d899659a7572074	2025-03-13
https://git.kernel.org/stable/c/dcb0d43ba8eb9517e70b1a0e4b0ae0ab657a0e5a	2025-02-20

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 5.4.291 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 5.4.291"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 5.10.235 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 5.10.235"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 5.15.179 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 5.15.179"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 6.1.131 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 6.1.131"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 6.6.83 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 6.6.83"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 6.12.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 6.12.19"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 6.13.7 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 6.13.7"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.16 < 6.14 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.16 < 6.14"		en		Affected