CVE-2022-50190
In the Linux kernel, the following vulnerability has been resolved: spi: Fix simplification of devm_spi_register_controller This reverts commit 59ebbe40fb51 ("spi: simplify devm_spi_register_controller").
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: spi: Fix simplification of devm_spi_register_controller This reverts commit 59ebbe40fb51 ("spi: simplify devm_spi_register_controller"). If devm_add_action() fails in devm_add_action_or_reset(), devm_spi_unregister() will be called, it decreases the refcount of 'ctlr->dev' to 0, then it will cause uaf in the drivers that calling spi_put_controller() in error path.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/34bab623ebfc08398499e463396b81abb4abe01ePatch
- https://git.kernel.org/stable/c/3c6bd448442b6c3f6843ac70d57201a13478dd47Patch
- https://git.kernel.org/stable/c/43cc5a0afe4184a7fafe1eba32b5a11bb69c9ce0Patch
- https://git.kernel.org/stable/c/445fb9c19cf45bd9472fd9babaa31c5e6c7d2720Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.