CVE-2024-49981: media: venus: fix use after free bug in venus_remove due to race condition
First published: Mon Oct 21 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | >=4.13<5.10.227 | |
| Linux kernel | >=5.11<5.15.168 | |
| Linux kernel | >=5.16<6.1.113 | |
| Linux kernel | >=6.2<6.6.55 | |
| Linux kernel | >=6.7<6.10.14 | |
| Linux kernel | >=6.11<6.11.3 | |
| Linux Kernel | >=4.13<5.10.227 | |
| Linux Kernel | >=5.11<5.15.168 | |
| Linux Kernel | >=5.16<6.1.113 | |
| Linux Kernel | >=6.2<6.6.55 | |
| Linux Kernel | >=6.7<6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| debian/linux | <=5.10.223-1 | 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/10941d4f99a5a34999121b314afcd9c0a1c14f15
- https://git.kernel.org/stable/c/2a541fcc0bd2b05a458e9613376df1289ec11621
- https://git.kernel.org/stable/c/5098b9e6377577fe13d03e1d8914930f014a3314
- https://git.kernel.org/stable/c/60b6968341a6dd5353554f3e72db554693a128a5
- https://git.kernel.org/stable/c/63bbe26471ebdcc3c20bb4cc3950d666279ad658
- https://git.kernel.org/stable/c/b0686aedc5f1343442d044bd64eeac7e7a391f4e
- https://git.kernel.org/stable/c/bf6be32e2d39f6301ff1831e249d32a8744ab28a
- https://git.kernel.org/stable/c/c5a85ed88e043474161bbfe54002c89c1cb50ee2
- https://git.kernel.org/stable/c/d925e9f7fb5a2dbefd1a73fc01061f38c7becd4c
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49981
- https://nvd.nist.gov/vuln/detail/CVE-2024-49981
- https://launchpad.net/bugs/cve/CVE-2024-49981
- https://security-tracker.debian.org/tracker/CVE-2024-49981
- https://ubuntu.com/security/CVE-2024-49981
- https://git.kernel.org/linus/c5a85ed88e043474161bbfe54002c89c1cb50ee2
Frequently Asked Questions
What is the severity of CVE-2024-49981?
The severity of CVE-2024-49981 is categorized as a medium risk due to a use-after-free vulnerability in the Linux kernel.
How do I fix CVE-2024-49981?
To fix CVE-2024-49981, update your Linux kernel to a version that includes the patch, such as version 6.1.123-1 or higher.
What are the affected versions of CVE-2024-49981?
CVE-2024-49981 affects multiple versions of the Linux kernel, specifically versions between 4.13 and 5.15, as well as versions between 5.16 and 6.11.
Is CVE-2024-49981 exploitable?
Yes, CVE-2024-49981 is exploitable, allowing attackers to potentially cause denial of service or execute arbitrary code.
Who is responsible for patching CVE-2024-49981?
Maintainers of Linux kernel distributions are responsible for patching CVE-2024-49981 and providing updated packages to their users.
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