CVE-2024-47712

wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param

State: Published
Severity: 8.3 High
Published: Oct 21, 2024
Updated: Aug 5, 2026
Reserved: Sep 30, 2024

Description

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

wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param

In the `wilc_parse_join_bss_param` function, the TSF field of the `ies` structure is accessed after the RCU read-side critical section is unlocked. According to RCU usage rules, this is illegal. Reusing this pointer can lead to unpredictable behavior, including accessing memory that has been updated or causing use-after-free issues.

This possible bug was identified using a static analysis tool developed by myself, specifically designed to detect RCU-related issues.

To address this, the TSF value is now stored in a local variable `ies_tsf` before the RCU lock is released. The `param->tsf_lo` field is then assigned using this local variable, ensuring that the TSF value is safely accessed.

Scores

CVSS	Score	Vector	Source
3.1	8.3 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	e556006de4ea93abe2b46cba202a2556c544b8b2 to before 5a24cedc243ace5ed7c1016f52a7bfc8f5b07815Affected b4bbf38c350acb6500cbe667b1e2e68f896e4b38 to before 557418e1704605a81c9e26732449f71b1d40ba1eAffected d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2 to before bf090f4fe935294361eabd9dc5a949fdd77d3d1bAffected 745003b5917b610352f52fe0d11ef658d6471ec2 to before b040b71d99ee5e17bb7a743dc01cbfcae8908ce1Affected 4bfd20d5f5c62b5495d6c0016ee6933bd3add7ce to before 84398204c5df5aaf89453056cf0647cda9664d2bAffected 205c50306acf58a335eb19fa84e40140f4fe814f to before 2f944e6255c2fc1c9bd9ee32f6b14ee0b2a51eb5Affected 205c50306acf58a335eb19fa84e40140f4fe814f to before 79510414a7626317f13cc9073244ab7a8deb3192Affected 205c50306acf58a335eb19fa84e40140f4fe814f to before 6d7c6ae1efb1ff68bc01d79d94fdf0388f86cdd8Affected 5800ec78775c0cd646f71eb9bf8402fb794807deAffected dd50d3ead6e3707bb0a5df7cc832730c93ace3a7Affected 5.4.273 to before 5.4.285Affected 5.10.214 to before 5.10.227Affected 5.15.153 to before 5.15.168Affected 6.1.83 to before 6.1.113Affected 6.6.23 to before 6.6.54Affected 6.7.11 to before 6.8Affected 6.8.2 to before 6.9Affected
LinuxLinux	6.9Affected before 6.9Not 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

Product

Versions

LinuxLinux

e556006de4ea93abe2b46cba202a2556c544b8b2 to before 5a24cedc243ace5ed7c1016f52a7bfc8f5b07815Affected
b4bbf38c350acb6500cbe667b1e2e68f896e4b38 to before 557418e1704605a81c9e26732449f71b1d40ba1eAffected
d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2 to before bf090f4fe935294361eabd9dc5a949fdd77d3d1bAffected
745003b5917b610352f52fe0d11ef658d6471ec2 to before b040b71d99ee5e17bb7a743dc01cbfcae8908ce1Affected
4bfd20d5f5c62b5495d6c0016ee6933bd3add7ce to before 84398204c5df5aaf89453056cf0647cda9664d2bAffected
205c50306acf58a335eb19fa84e40140f4fe814f to before 2f944e6255c2fc1c9bd9ee32f6b14ee0b2a51eb5Affected
205c50306acf58a335eb19fa84e40140f4fe814f to before 79510414a7626317f13cc9073244ab7a8deb3192Affected
205c50306acf58a335eb19fa84e40140f4fe814f to before 6d7c6ae1efb1ff68bc01d79d94fdf0388f86cdd8Affected
5800ec78775c0cd646f71eb9bf8402fb794807deAffected
dd50d3ead6e3707bb0a5df7cc832730c93ace3a7Affected
5.4.273 to before 5.4.285Affected
5.10.214 to before 5.10.227Affected
5.15.153 to before 5.15.168Affected
6.1.83 to before 6.1.113Affected
6.6.23 to before 6.6.54Affected
6.7.11 to before 6.8Affected
6.8.2 to before 6.9Affected

LinuxLinux

6.9Affected
before 6.9Not 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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