CVE-2022-49524

media: pci: cx23885: Fix the error handling in cx23885_initdev()

State: Published
Severity: 7.8 High
Published: Feb 26, 2025
Updated: May 11, 2026
Reserved: Feb 26, 2025

Description

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

media: pci: cx23885: Fix the error handling in cx23885_initdev()

When the driver fails to call the dma_set_mask(), the driver will get the following splat:

[ 55.853884] BUG: KASAN: use-after-free in __process_removed_driver+0x3c/0x240 [ 55.854486] Read of size 8 at addr ffff88810de60408 by task modprobe/590 [ 55.856822] Call Trace: [ 55.860327] __process_removed_driver+0x3c/0x240 [ 55.861347] bus_for_each_dev+0x102/0x160 [ 55.861681] i2c_del_driver+0x2f/0x50

This is because the driver has initialized the i2c related resources in cx23885_dev_setup() but not released them in error handling, fix this bug by modifying the error path that jumps after failing to call the dma_set_mask().

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	2bc46b3ad3c15165f91459b07ff8682478683194 to before 6041d1a0365baa729b6adfb6ed5386d9388018dbAffected 2bc46b3ad3c15165f91459b07ff8682478683194 to before 7b9978e1c94e569d65a0e7e719abb9340f5db4a0Affected 2bc46b3ad3c15165f91459b07ff8682478683194 to before fa636e9ee4442215cd9a2e079cd5a8e1fe0cb8baAffected 2bc46b3ad3c15165f91459b07ff8682478683194 to before ca17e7a532d1a55466cc007b3f4d319541a27493Affected 2bc46b3ad3c15165f91459b07ff8682478683194 to before 98106f100f50c487469903b9cf6d966785fc9cc3Affected 2bc46b3ad3c15165f91459b07ff8682478683194 to before 86bd6a579c6c60547706cabf299cd2c9feab3332Affected 2bc46b3ad3c15165f91459b07ff8682478683194 to before 453514a874c78df1e7804e6e3aaa60c8d8deb6a8Affected 2bc46b3ad3c15165f91459b07ff8682478683194 to before e8123311cf06d7dae71e8c5fe78e0510d20cd30bAffected
LinuxLinux	4.8Affected before 4.8Not affected 4.14.283 through 4.14.Not affected 4.19.247 through 4.19.Not affected 5.4.198 through 5.4.Not affected 5.10.121 through 5.10.Not affected 5.15.46 through 5.15.Not affected 5.17.14 through 5.17.Not affected 5.18.3 through 5.18.*Not affected 5.19 and laterNot affected

Product

Versions

LinuxLinux

2bc46b3ad3c15165f91459b07ff8682478683194 to before 6041d1a0365baa729b6adfb6ed5386d9388018dbAffected
2bc46b3ad3c15165f91459b07ff8682478683194 to before 7b9978e1c94e569d65a0e7e719abb9340f5db4a0Affected
2bc46b3ad3c15165f91459b07ff8682478683194 to before fa636e9ee4442215cd9a2e079cd5a8e1fe0cb8baAffected
2bc46b3ad3c15165f91459b07ff8682478683194 to before ca17e7a532d1a55466cc007b3f4d319541a27493Affected
2bc46b3ad3c15165f91459b07ff8682478683194 to before 98106f100f50c487469903b9cf6d966785fc9cc3Affected
2bc46b3ad3c15165f91459b07ff8682478683194 to before 86bd6a579c6c60547706cabf299cd2c9feab3332Affected
2bc46b3ad3c15165f91459b07ff8682478683194 to before 453514a874c78df1e7804e6e3aaa60c8d8deb6a8Affected
2bc46b3ad3c15165f91459b07ff8682478683194 to before e8123311cf06d7dae71e8c5fe78e0510d20cd30bAffected

LinuxLinux

4.8Affected
before 4.8Not affected
4.14.283 through 4.14.*Not affected
4.19.247 through 4.19.*Not affected
5.4.198 through 5.4.*Not affected
5.10.121 through 5.10.*Not affected
5.15.46 through 5.15.*Not affected
5.17.14 through 5.17.*Not affected
5.18.3 through 5.18.*Not affected
5.19 and laterNot affected

References

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