Description

In the Linux kernel, the following vulnerability has been resolved:

media: venus: fix use after free bug in venus_remove due to race condition

in venus_probe, core->work is bound with venus_sys_error_handler, which is
used to handle error. The code use core->sys_err_done to make sync work.
The core->work is started in venus_event_notify.

If we call venus_remove, there might be an unfished work. The possible
sequence is as follows:

CPU0 CPU1

|venus_sys_error_handler
venus_remove |
hfi_destroy |
venus_hfi_destroy |
kfree(hdev); |
|hfi_reinit
|venus_hfi_queues_reinit
|//use hdev

Fix it by canceling the work in venus_remove.

Classification

CVE ID: CVE-2024-49981

CVSS Base Severity: HIGH

CVSS Base Score: 7.0

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 6.17% (scored less or equal to compared to others)

EPSS Date: 2025-06-02 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: partial

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2024-49981
https://git.kernel.org/stable/c/5098b9e6377577fe13d03e1d8914930f014a3314
https://git.kernel.org/stable/c/63bbe26471ebdcc3c20bb4cc3950d666279ad658
https://git.kernel.org/stable/c/60b6968341a6dd5353554f3e72db554693a128a5
https://git.kernel.org/stable/c/bf6be32e2d39f6301ff1831e249d32a8744ab28a
https://git.kernel.org/stable/c/2a541fcc0bd2b05a458e9613376df1289ec11621
https://git.kernel.org/stable/c/b0686aedc5f1343442d044bd64eeac7e7a391f4e
https://git.kernel.org/stable/c/d925e9f7fb5a2dbefd1a73fc01061f38c7becd4c
https://git.kernel.org/stable/c/10941d4f99a5a34999121b314afcd9c0a1c14f15
https://git.kernel.org/stable/c/c5a85ed88e043474161bbfe54002c89c1cb50ee2

Timeline