cve-2024-38616
Vulnerability from cvelistv5
Published
2024-06-19 13:56
Modified
2024-12-19 09:05
Severity ?
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/042a39bb8e0812466327a5102606e88a5a4f8c02Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/066afafc10c9476ee36c47c9062527a17e763901Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c38c9c460bb8ce8d6f6cf316e0d71a70983ec83Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13857683126e8a6492af73c74d702835f7a2175bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87586467098281f04fa93e59fe3a516b954bddc4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/042a39bb8e0812466327a5102606e88a5a4f8c02Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/066afafc10c9476ee36c47c9062527a17e763901Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0c38c9c460bb8ce8d6f6cf316e0d71a70983ec83Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/13857683126e8a6492af73c74d702835f7a2175bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/87586467098281f04fa93e59fe3a516b954bddc4Patch
Impacted products
Vendor Product Version
Linux Linux Version: fb5f6a0e8063b7a84d6d44ef353846ccd7708d2e
Version: fb5f6a0e8063b7a84d6d44ef353846ccd7708d2e
Version: fb5f6a0e8063b7a84d6d44ef353846ccd7708d2e
Version: fb5f6a0e8063b7a84d6d44ef353846ccd7708d2e
Version: fb5f6a0e8063b7a84d6d44ef353846ccd7708d2e
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   Linux Linux Version: 5.17
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      cveId: "CVE-2024-38616",
      datePublished: "2024-06-19T13:56:16.086Z",
      dateReserved: "2024-06-18T19:36:34.944Z",
      dateUpdated: "2024-12-19T09:05:42.973Z",
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      nvd: "{\"cve\":{\"id\":\"CVE-2024-38616\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-19T14:15:21.403\",\"lastModified\":\"2025-04-01T18:27:13.400\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: carl9170: re-fix fortified-memset warning\\n\\nThe carl9170_tx_release() function sometimes triggers a fortified-memset\\nwarning in my randconfig builds:\\n\\nIn file included from include/linux/string.h:254,\\n                 from drivers/net/wireless/ath/carl9170/tx.c:40:\\nIn function 'fortify_memset_chk',\\n    inlined from 'carl9170_tx_release' at drivers/net/wireless/ath/carl9170/tx.c:283:2,\\n    inlined from 'kref_put' at include/linux/kref.h:65:3,\\n    inlined from 'carl9170_tx_put_skb' at drivers/net/wireless/ath/carl9170/tx.c:342:9:\\ninclude/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]\\n  493 |                         __write_overflow_field(p_size_field, size);\\n\\nKees previously tried to avoid this by using memset_after(), but it seems\\nthis does not fully address the problem. I noticed that the memset_after()\\nhere is done on a different part of the union (status) than the original\\ncast was from (rate_driver_data), which may confuse the compiler.\\n\\nUnfortunately, the memset_after() trick does not work on driver_rates[]\\nbecause that is part of an anonymous struct, and I could not get\\nstruct_group() to do this either. Using two separate memset() calls\\non the two members does address the warning though.\"},{\"lang\":\"es\",\"value\":\"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. 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following vulnerability has been resolved:\\n\\nwifi: carl9170: re-fix fortified-memset warning\\n\\nThe carl9170_tx_release() function sometimes triggers a fortified-memset\\nwarning in my randconfig builds:\\n\\nIn file included from include/linux/string.h:254,\\n                 from drivers/net/wireless/ath/carl9170/tx.c:40:\\nIn function 'fortify_memset_chk',\\n    inlined from 'carl9170_tx_release' at drivers/net/wireless/ath/carl9170/tx.c:283:2,\\n    inlined from 'kref_put' at include/linux/kref.h:65:3,\\n    inlined from 'carl9170_tx_put_skb' at drivers/net/wireless/ath/carl9170/tx.c:342:9:\\ninclude/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]\\n  493 |                         __write_overflow_field(p_size_field, size);\\n\\nKees previously tried to avoid this by using memset_after(), but it seems\\nthis does not fully address the problem. I noticed that the memset_after()\\nhere is done on a different part of the union (status) than the original\\ncast was from (rate_driver_data), which may confuse the compiler.\\n\\nUnfortunately, the memset_after() trick does not work on driver_rates[]\\nbecause that is part of an anonymous struct, and I could not get\\nstruct_group() to do this either. Using two separate memset() calls\\non the two members does address the warning though.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:05:42.973Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2024-38616\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:05:42.973Z\", \"dateReserved\": \"2024-06-18T19:36:34.944Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T13:56:16.086Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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