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.
Metrics
Affected Vendors & Products
References
History
Fri, 08 Nov 2024 16:00:00 +0000
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Thu, 24 Oct 2024 14:45:00 +0000
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First Time appeared |
Linux
Linux linux Kernel |
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Weaknesses | CWE-476 | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
Tue, 22 Oct 2024 01:30:00 +0000
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threat_severity
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cvssV3_1
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Mon, 21 Oct 2024 13:15:00 +0000
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ssvc
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Mon, 21 Oct 2024 12:00:00 +0000
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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. | |
Title | wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param | |
References |
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-10-21T11:53:44.763Z
Updated: 2024-11-08T15:56:27.383Z
Reserved: 2024-09-30T16:00:12.948Z
Link: CVE-2024-47712
Vulnrichment
Updated: 2024-10-21T13:03:10.556Z
NVD
Status : Modified
Published: 2024-10-21T12:15:07.640
Modified: 2024-11-08T16:15:26.243
Link: CVE-2024-47712
Redhat