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().
References
Configurations
Configuration 1 (hide)
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History
No history.
Information
Published : 2024-03-02 22:15
Updated : 2024-12-11 15:07
NVD link : CVE-2023-52509
Mitre link : CVE-2023-52509
CVE.ORG link : CVE-2023-52509
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free
