CVE-2023-52509

HIGH
Published Mar 2, 2024 Modified Dec 11, 2024 CWE-416

Description

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().

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

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://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

Frequently Asked Questions

What is CVE-2023-52509? +
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(). It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2023-52509? +
CVE-2023-52509 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2023-52509? +
CVE-2023-52509 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-52509? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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