Riskcovery

CVE-2024-47747

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

State
Published
Severity
7.8 High
Published
Oct 21, 2024
Updated
Oct 15, 2026
Reserved
Sep 30, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before 25d559ed2beec9b34045886100dac46d1ad92ebaAffected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before b5a84b6c772564c8359a9a0fbaeb2a2944aa1ee9Affected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before 338a0582b28e69460df03af50e938b86b4206353Affected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before 822c7bb1f6f8b0331e8d1927151faf8db3b33afdAffected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before 1c57d61a43293252ad732007c7070fdb112545fdAffected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before d2abc379071881798d20e2ac1d332ad855ae22f3Affected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before 516dbc6d16637430808c39568cbb6b841d32b55bAffected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before 77a77331cef0a219b8dd91361435eeef04cb741cAffected
  • 6fd9c53f71862a4797b7ed8a5de80e2c64829f56 to before b5109b60ee4fcb2f2bb24f589575e10cc5283ad4Affected
LinuxLinux
  • 4.15Affected
  • before 4.15Not affected
  • 4.19.323 through 4.19.*Not affected
  • 5.4.285 through 5.4.*Not affected
  • 5.10.227 through 5.10.*Not affected
  • 5.15.168 through 5.15.*Not affected
  • 6.1.113 through 6.1.*Not affected
  • 6.6.54 through 6.6.*Not affected
  • 6.10.13 through 6.10.*Not affected
  • 6.11.2 through 6.11.*Not affected
  • 6.12 and laterNot affected

References

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