CVE-2024-38616
wifi: carl9170: re-fix fortified-memset warning
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: carl9170: volver a corregir la advertencia de memset fortificado La función carl9170_tx_release() a veces activa una advertencia de memset fortificado en mis compilaciones de randconfig: en el archivo incluido en include/linux/string. h:254, de drivers/net/wireless/ath/carl9170/tx.c:40: en la función 'fortify_memset_chk', insertado desde 'carl9170_tx_release' en drivers/net/wireless/ath/carl9170/tx.c:283:2 , incluido desde 'kref_put' en include/linux/kref.h:65:3, incluido desde 'carl9170_tx_put_skb' en drivers/net/wireless/ath/carl9170/tx.c:342:9: include/linux/fortify-string .h:493:25: error: llamada a '__write_overflow_field' declarada con advertencia de atributo: escritura detectada más allá del tamaño del campo (primer parámetro); ¿Quizás usar struct_group()? [-Werror=advertencia-atributo] 493 | __write_overflow_field(p_size_field, tamaño); Kees anteriormente intentó evitar esto usando memset_after(), pero parece que esto no soluciona completamente el problema. Me di cuenta de que memset_after() aquí se realiza en una parte diferente de la unión (estado) de la que provenía la conversión original (rate_driver_data), lo que puede confundir al compilador. Desafortunadamente, el truco memset_after() no funciona en driver_rates[] porque es parte de una estructura anónima y tampoco pude lograr que struct_group() hiciera esto. Sin embargo, el uso de dos llamadas memset() separadas en los dos miembros soluciona la advertencia.
CVSS Scores
SSVC
- Decision:Attend
Timeline
- 2024-06-18 CVE Reserved
- 2024-06-19 CVE Published
- 2024-06-20 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (6)
URL | Tag | Source |
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https://git.kernel.org/stable/c/fb5f6a0e8063b7a84d6d44ef353846ccd7708d2e | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 6.1.93 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.1.93" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 6.6.33 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.6.33" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 6.8.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.8.12" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 6.9.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.9.3" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.17 < 6.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.17 < 6.10" | en |
Affected
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