CVE-2024-47747
Published: October 23, 2024Last modified: October 23, 2024
Description
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 ether3_probe function, a timer is initialized with a callback function ether3_ledoff, 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 ether3_remove | free_netdev(dev); | put_devic | kfree(dev); | | ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2); | // use dev Fix it by ensuring that the timer is canceled before proceeding with the cleanup in ether3_remove.
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7 |
Attack Vector | LOCAL |
Attack complexity | HIGH |
Privileges required | LOW |
User interaction | NONE |
Scope | UNCHANGED |
Confidentiality | HIGH |
Integrity impact | HIGH |
Availability impact | HIGH |
Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
Product | Release | Package | Status |
---|---|---|---|
Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.114-r0) |
Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/1c57d61a43293252ad732007c7070fdb112545fd
- https://git.kernel.org/stable/c/25d559ed2beec9b34045886100dac46d1ad92eba
- https://git.kernel.org/stable/c/338a0582b28e69460df03af50e938b86b4206353
- https://git.kernel.org/stable/c/516dbc6d16637430808c39568cbb6b841d32b55b
- https://git.kernel.org/stable/c/77a77331cef0a219b8dd91361435eeef04cb741c
- https://git.kernel.org/stable/c/822c7bb1f6f8b0331e8d1927151faf8db3b33afd
- https://git.kernel.org/stable/c/b5109b60ee4fcb2f2bb24f589575e10cc5283ad4
- https://git.kernel.org/stable/c/b5a84b6c772564c8359a9a0fbaeb2a2944aa1ee9
- https://git.kernel.org/stable/c/d2abc379071881798d20e2ac1d332ad855ae22f3