CVE-2024-39493: crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak
First published: Wed Jul 10 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak Using completion_done to determine whether the caller has gone away only works after a complete call. Furthermore it's still possible that the caller has not yet called wait_for_completion, resulting in another potential UAF. Fix this by making the caller use cancel_work_sync and then freeing the memory safely.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.19.312<4.19.316 | |
| Linux Kernel | >=5.4.274<5.4.278 | |
| Linux Kernel | >=5.10.215<5.10.219 | |
| Linux Kernel | >=5.15.154<5.15.161 | |
| Linux Kernel | >=6.1.84<6.1.94 | |
| Linux Kernel | >=6.6.24<6.6.34 | |
| Linux Kernel | >=6.9<6.9.5 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 |
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Reference Links
- https://git.kernel.org/stable/c/0ce5964b82f212f4df6a9813f09a0b5de15bd9c8
- https://git.kernel.org/stable/c/6396b33e98c096bff9c253ed49c008247963492a
- https://git.kernel.org/stable/c/a718b6d2a329e069b27d9049a71be5931e71d960
- https://git.kernel.org/stable/c/3fb4601e0db10d4fe25e46f3fa308d40d37366bd
- https://git.kernel.org/stable/c/e7428e7e3fe94a5089dc12ffe5bc31574d2315ad
- https://git.kernel.org/stable/c/c2d443aa1ae3175c13a665f3a24b8acd759ce9c3
- https://git.kernel.org/stable/c/d0fd124972724cce0d48b9865ce3e273ef69e246
- https://git.kernel.org/stable/c/d3b17c6d9dddc2db3670bc9be628b122416a3d26
- https://git.kernel.org/linus/d3b17c6d9dddc2db3670bc9be628b122416a3d26
- https://security-tracker.debian.org/tracker/CVE-2024-39493
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-39493
- https://nvd.nist.gov/vuln/detail/CVE-2024-39493
- https://launchpad.net/bugs/cve/CVE-2024-39493
- https://ubuntu.com/security/CVE-2024-39493
Frequently Asked Questions
What is the severity of CVE-2024-39493?
CVE-2024-39493 has been categorized as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-39493?
To fix CVE-2024-39493, update to the latest Linux kernel versions available, such as 5.10.223-1 or 6.1.123-1.
What versions of the Linux kernel are affected by CVE-2024-39493?
Versions of the Linux kernel from 4.19.312 up to 4.19.316, 5.4.274 up to 5.4.278, 5.10.215 up to 5.10.219, and other specified ranges are affected by CVE-2024-39493.
What is the potential impact of exploiting CVE-2024-39493?
Exploiting CVE-2024-39493 could lead to a memory leak in the kernel's crypto subsystem.
Who is affected by CVE-2024-39493?
Any users running the affected versions of the Linux kernel in environments utilizing the crypto subsystem are at risk from CVE-2024-39493.
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