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THREATINT
PUBLISHED

CVE-2024-27063

leds: trigger: netdev: Fix kernel panic on interface rename trig notify

Reserved:2024-02-19
Published:2024-05-01
Updated:2024-05-13

Description

In the Linux kernel, the following vulnerability has been resolved: leds: trigger: netdev: Fix kernel panic on interface rename trig notify Commit d5e01266e7f5 ("leds: trigger: netdev: add additional specific link speed mode") in the various changes, reworked the way to set the LINKUP mode in commit cee4bd16c319 ("leds: trigger: netdev: Recheck NETDEV_LED_MODE_LINKUP on dev rename") and moved it to a generic function. This changed the logic where, in the previous implementation the dev from the trigger event was used to check if the carrier was ok, but in the new implementation with the generic function, the dev in trigger_data is used instead. This is problematic and cause a possible kernel panic due to the fact that the dev in the trigger_data still reference the old one as the new one (passed from the trigger event) still has to be hold and saved in the trigger_data struct (done in the NETDEV_REGISTER case). On calling of get_device_state(), an invalid net_dev is used and this cause a kernel panic. To handle this correctly, move the call to get_device_state() after the new net_dev is correctly set in trigger_data (in the NETDEV_REGISTER case) and correctly parse the new dev.

Product status

Default status
unaffected

d5e01266e7f5 before 10f2af1af8ab
affected

d5e01266e7f5 before acd025c7a7d1
affected

d5e01266e7f5 before 3f360227cb46
affected

d5e01266e7f5 before 415798bc07dd
affected

Default status
affected

6.5
affected

Any version before 6.5
unaffected

6.6.24
unaffected

6.7.12
unaffected

6.8.3
unaffected

6.9
unaffected

References

https://git.kernel.org/stable/c/10f2af1af8ab8a7064f193446abd5579d3def7e3

https://git.kernel.org/stable/c/acd025c7a7d151261533016a6ca2d38f2de04e87

https://git.kernel.org/stable/c/3f360227cb46edb2cd2494128e1e06ed5768a62e

https://git.kernel.org/stable/c/415798bc07dd1c1ae3a656aa026580816e0b9fe8

cve.org CVE-2024-27063

nvd.nist.gov CVE-2024-27063

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