In the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: re-fix fortified-memset warning The carl9170_tx_release() function sometimes triggers a fortified-memset warning in my randconfig builds: In file included from include/linux/string.h:254, from drivers/net/wireless/ath/carl9170/tx.c:40: In function 'fortify_memset_chk', inlined from 'carl9170_tx_release' at drivers/net/wireless/ath/carl9170/tx.c:283:2, inlined from 'kref_put' at include/linux/kref.h:65:3, inlined from 'carl9170_tx_put_skb' at drivers/net/wireless/ath/carl9170/tx.c:342:9: include/linux/fortify-string.h:493:25: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror=attribute-warning] 493 | __write_overflow_field(p_size_field, size); Kees previously tried to avoid this by using memset_after(), but it seems this does not fully address the problem. I noticed that the memset_after() here is done on a different part of the union (status) than the original cast was from (rate_driver_data), which may confuse the compiler. Unfortunately, the memset_after() trick does not work on driver_rates[] because that is part of an anonymous struct, and I could not get struct_group() to do this either. Using two separate memset() calls on the two members does address the warning though.
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-06-19T13:56:16.086Z

Updated: 2024-12-19T09:05:42.973Z

Reserved: 2024-06-18T19:36:34.944Z

Link: CVE-2024-38616

cve-icon Vulnrichment

Updated: 2024-08-02T04:12:26.016Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-06-19T14:15:21.403

Modified: 2024-11-21T09:26:29.657

Link: CVE-2024-38616

cve-icon Redhat

Severity : Low

Publid Date: 2024-06-19T00:00:00Z

Links: CVE-2024-38616 - Bugzilla