CVE-2024-39484
Published: July 6, 2024Last modified: July 6, 2024
Description
In the Linux kernel, the following vulnerability has been resolved: mmc: davinci: Don't strip remove function when driver is builtin Using __exit for the remove function results in the remove callback being discarded with CONFIG_MMC_DAVINCI=y. When such a device gets unbound (e.g. using sysfs or hotplug), the driver is just removed without the cleanup being performed. This results in resource leaks. Fix it by compiling in the remove callback unconditionally. This also fixes a W=1 modpost warning: WARNING: modpost: drivers/mmc/host/davinci_mmc: section mismatch in reference: davinci_mmcsd_driver+0x10 (section: .data) -> davinci_mmcsd_remove (section: .exit.text)
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.97-r0) |
| Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/1d5ed0efe51d36b9ae9b64f133bf41cdbf56f584
- https://git.kernel.org/stable/c/55c421b364482b61c4c45313a535e61ed5ae4ea3
- https://git.kernel.org/stable/c/5ee241f72edc6dce5051a5f100eab6cc019d873e
- https://git.kernel.org/stable/c/6ff7cfa02baabec907f6f29ea76634e6256d2ec4
- https://git.kernel.org/stable/c/7590da4c04dd4aa9c262da0231e978263861c6eb
- https://git.kernel.org/stable/c/aea35157bb9b825faa0432bd0f7fbea37ff39aa1