CVE-2022-49275: can: m_can: m_can_tx_handler(): fix use after free of skb
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_tx_handler(): fix use after free of skb can_put_echo_skb() will clone skb then free the skb. Move the can_put_echo_skb() for the m_can version 3.0.x directly before the start of the xmit in hardware, similar to the 3.1.x branch.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=3.0.0<3.1.0 | |
| Linux Kernel | >=3.18<4.9.324 | |
| Linux Kernel | >=4.10<4.14.289 | |
| Linux Kernel | >=4.15<4.19.253 | |
| Linux Kernel | >=4.20<5.4.207 | |
| Linux Kernel | >=5.5<5.10.110 | |
| Linux Kernel | >=5.11<5.15.33 | |
| Linux Kernel | >=5.16<5.16.19 | |
| Linux Kernel | >=5.17<5.17.2 |
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Reference Links
- https://git.kernel.org/stable/c/d93ed9aff64968f4cdad690712eb4f48ae537bde
- https://git.kernel.org/stable/c/d3892a747ab16b1eb6593a19d29f62c3b3f020ac
- https://git.kernel.org/stable/c/7728d937ec403a1ceff9483023252d2cb8777f81
- https://git.kernel.org/stable/c/08d90846e438ac22dc56fc49ec0b0d195831c5ed
- https://git.kernel.org/stable/c/869016a2938ac44f7b2fb7fc22c89edad99eb9b3
- https://git.kernel.org/stable/c/f43e64076ff1b1dcb893fb77ad1204105f710a29
- https://git.kernel.org/stable/c/4db7d6f481990dd179a9ee7126dc7aa31ea4fff3
- https://git.kernel.org/stable/c/31417073493f302d26ab66b3abc098d43227b835
- https://git.kernel.org/stable/c/2e8e79c416aae1de224c0f1860f2e3350fa171f8
Frequently Asked Questions
What is the severity of CVE-2022-49275?
CVE-2022-49275 has a severity rating that indicates it could lead to serious issues due to a use-after-free flaw in the Linux kernel.
How do I fix CVE-2022-49275?
To fix CVE-2022-49275, update the Linux kernel to a version that includes the patch addressing this vulnerability.
Which versions of Linux kernel are affected by CVE-2022-49275?
CVE-2022-49275 affects Linux kernel versions from 3.0.0 to 5.17.2, excluding specific patched versions.
What type of vulnerability is CVE-2022-49275?
CVE-2022-49275 is categorized as a use-after-free vulnerability that may lead to memory corruption.
What component is impacted by CVE-2022-49275?
CVE-2022-49275 impacts the m_can transmit handler in the Linux kernel's CAN subsystem.
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