CVE-2024-47747

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-47747
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-47747.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-47747
Downstream
Related
Published
2024-10-21T13:15:04Z
Modified
2025-08-09T20:01:28Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

net: seeq: Fix use after free vulnerability in ether3 Driver Due to Race Condition

In the ether3probe function, a timer is initialized with a callback function ether3ledoff, bound to &prev(dev)->timer. Once the timer is started, there is a risk of a race condition if the module or device is removed, triggering the ether3_remove function to perform cleanup. The sequence of operations that may lead to a UAF bug is as follows:

CPU0 CPU1

                  |  ether3_ledoff

ether3remove | freenetdev(dev); | putdevic | kfree(dev); | | ether3outw(priv(dev)->regs.config2 |= CFG2CTRLO, REGCONFIG2); | // use dev

Fix it by ensuring that the timer is canceled before proceeding with the cleanup in ether3_remove.

References

Affected packages