CVE-2023-52509: ravb: Fix use-after-free issue in ravb_tx_timeout_work()
First published: Sat Mar 02 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ravb: Fix use-after-free issue in ravb_tx_timeout_work() The ravb_stop() should call cancel_work_sync(). Otherwise, ravb_tx_timeout_work() is possible to use the freed priv after ravb_remove() was called like below: CPU0 CPU1 ravb_tx_timeout() ravb_remove() unregister_netdev() free_netdev(ndev) // free priv ravb_tx_timeout_work() // use priv unregister_netdev() will call .ndo_stop() so that ravb_stop() is called. And, after phy_stop() is called, netif_carrier_off() is also called. So that .ndo_tx_timeout() will not be called after phy_stop().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.2<5.4.259 | |
| Linux Kernel | >=5.5<5.10.199 | |
| Linux Kernel | >=5.11<5.15.136 | |
| Linux Kernel | >=5.16<6.1.59 | |
| Linux Kernel | >=6.2<6.5.8 | |
| Linux Kernel | =6.6-rc1 | |
| Linux Kernel | =6.6-rc2 | |
| Linux Kernel | =6.6-rc3 | |
| Linux Kernel | =6.6-rc4 | |
| Linux Kernel | =6.6-rc5 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://git.kernel.org/stable/c/105abd68ad8f781985113aee2e92e0702b133705
- https://git.kernel.org/stable/c/3971442870713de527684398416970cf025b4f89
- https://git.kernel.org/stable/c/616761cf9df9af838c0a1a1232a69322a9eb67e6
- https://git.kernel.org/stable/c/65d34cfd4e347054eb4193bc95d9da7eaa72dee5
- https://git.kernel.org/stable/c/6f6fa8061f756aedb93af12a8a5d3cf659127965
- https://git.kernel.org/stable/c/db9aafa19547833240f58c2998aed7baf414dc82
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52509
- https://nvd.nist.gov/vuln/detail/CVE-2023-52509
- https://launchpad.net/bugs/cve/CVE-2023-52509
- https://security-tracker.debian.org/tracker/CVE-2023-52509
- https://ubuntu.com/security/CVE-2023-52509
- https://git.kernel.org/linus/3971442870713de527684398416970cf025b4f89
Frequently Asked Questions
What is the severity of CVE-2023-52509?
CVE-2023-52509 has been classified as a medium severity vulnerability.
How do I fix CVE-2023-52509?
To fix CVE-2023-52509, update the Linux kernel to a version that contains the patch for this vulnerability.
Which versions of the Linux kernel are affected by CVE-2023-52509?
CVE-2023-52509 affects various versions of the Linux kernel ranging from 4.2 to 6.6-rc5.
What type of vulnerability is CVE-2023-52509?
CVE-2023-52509 is a use-after-free vulnerability that can lead to memory corruption.
What component of the Linux kernel is impacted by CVE-2023-52509?
CVE-2023-52509 impacts the ravb (RAVB Ethernet driver) component within the Linux kernel.
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