CVE-2023-52509

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc156633f1353264634135dea86ffcae74f2122fc < 65d34cfd4e347054eb4193bc95d9da7eaa72dee5affected
LinuxLinuxc156633f1353264634135dea86ffcae74f2122fc < db9aafa19547833240f58c2998aed7baf414dc82affected
LinuxLinuxc156633f1353264634135dea86ffcae74f2122fc < 616761cf9df9af838c0a1a1232a69322a9eb67e6affected
LinuxLinuxc156633f1353264634135dea86ffcae74f2122fc < 6f6fa8061f756aedb93af12a8a5d3cf659127965affected
LinuxLinuxc156633f1353264634135dea86ffcae74f2122fc < 105abd68ad8f781985113aee2e92e0702b133705affected
LinuxLinuxc156633f1353264634135dea86ffcae74f2122fc < 3971442870713de527684398416970cf025b4f89affected
LinuxLinux4.2affected
LinuxLinux0 < 4.2unaffected
LinuxLinux5.4.259 <= 5.4.*unaffected
LinuxLinux5.10.199 <= 5.10.*unaffected
LinuxLinux5.15.136 <= 5.15.*unaffected
LinuxLinux6.1.59 <= 6.1.*unaffected
LinuxLinux6.5.8 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References