CVE-2022-49235

In the Linux kernel, the following vulnerability has been resolved: ath9k_htc: fix uninit value bugs Syzbot reported 2 KMSAN bugs in ath9k. All of them are caused by missing field initialization. In htc_connect_service() svc_meta_len and pad are not initialized. Based on code it looks like in current skb there is no service data, so simply initialize svc_meta_len to 0. htc_issue_send() does not initialize htc_frame_hdr::control array. Based on firmware code, it will initialize it by itself, so simply zero whole array to make KMSAN happy Fail logs: BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [inline] hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479 htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [inline] htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275 ... Uninit was created at: slab_post_alloc_hook mm/slab.h:524 [inline] slab_alloc_node mm/slub.c:3251 [inline] __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974 kmalloc_reserve net/core/skbuff.c:354 [inline] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1126 [inline] htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258 ... Bytes 4-7 of 18 are uninitialized Memory access of size 18 starts at ffff888027377e00 BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [inline] hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479 htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [inline] htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275 ... Uninit was created at: slab_post_alloc_hook mm/slab.h:524 [inline] slab_alloc_node mm/slub.c:3251 [inline] __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974 kmalloc_reserve net/core/skbuff.c:354 [inline] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1126 [inline] htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258 ... Bytes 16-17 of 18 are uninitialized Memory access of size 18 starts at ffff888027377e00

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0b700f7d06492de34964b6f414120043364f8191	Patch
https://git.kernel.org/stable/c/11f11ac281f0c0b363d2940204f28bae0422ed71	Patch
https://git.kernel.org/stable/c/4d244b731188e0b63fc40a9d2dec72e9181fb37c	Patch
https://git.kernel.org/stable/c/5abf2b761b998063f5e2bae93fd4ab10e2a80f10	Patch
https://git.kernel.org/stable/c/5c2a6a8daa17a3f65b38b9a5574bb362c13fa1d9	Patch
https://git.kernel.org/stable/c/7da6169b6ebb75816b57be3beb829afa74f3b4b6	Patch
https://git.kernel.org/stable/c/d1e0df1c57bd30871dd1c855742a7c346dbca853	Patch
https://git.kernel.org/stable/c/e352acdd378e9263cc4c6018e588f2dac7161d07	Patch
https://git.kernel.org/stable/c/ee4222052a76559c20e821bc3519cefb58b6d3e9	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

18 Mar 2025, 19:27

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel::::::::
Summary		(es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ath9k_htc: corregir errores de valores no inicializados Syzbot informó de 2 errores de KMSAN en ath9k. Todos ellos son causados por la falta de inicialización de campos. En htc_connect_service(), svc_meta_len y pad no se inicializan. Según el código, parece que en el skb actual no hay datos de servicio, por lo que simplemente inicialice svc_meta_len a 0. htc_issue_send() no inicializa la matriz htc_frame_hdr::control. Basado en el código del firmware, lo inicializará por sí mismo, así que simplemente ponga a cero toda la matriz para que KMSAN esté contento Registros de errores: ERROR: KMSAN: kernel-usb-infoleak en usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [en línea] hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479 htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [en línea] htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275 ... Uninit se creó en: slab_post_alloc_hook mm/slab.h:524 [en línea] slab_alloc_node mm/slub.c:3251 [en línea] __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974 kmalloc_reserve net/core/skbuff.c:354 [en línea] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1126 [en línea] htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258 ... Los bytes 4-7 de 18 no están inicializados El acceso a la memoria de tamaño 18 comienza en ffff888027377e00 ERROR: KMSAN: kernel-usb-infoleak en usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [en línea] hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479 htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [en línea] htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275 ... Uninit se creó en: slab_post_alloc_hook mm/slab.h:524 [en línea] slab_alloc_node mm/slub.c:3251 [en línea] __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974 kmalloc_reserve net/core/skbuff.c:354 [en línea] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1126 [en línea] htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258 ... Los bytes 16-17 de 18 no están inicializados. El acceso a la memoria de tamaño 18 comienza en ffff888027377e00
References	~~() https://git.kernel.org/stable/c/0b700f7d06492de34964b6f414120043364f8191 -~~	() https://git.kernel.org/stable/c/0b700f7d06492de34964b6f414120043364f8191 - Patch
References	~~() https://git.kernel.org/stable/c/11f11ac281f0c0b363d2940204f28bae0422ed71 -~~	() https://git.kernel.org/stable/c/11f11ac281f0c0b363d2940204f28bae0422ed71 - Patch
References	~~() https://git.kernel.org/stable/c/4d244b731188e0b63fc40a9d2dec72e9181fb37c -~~	() https://git.kernel.org/stable/c/4d244b731188e0b63fc40a9d2dec72e9181fb37c - Patch
References	~~() https://git.kernel.org/stable/c/5abf2b761b998063f5e2bae93fd4ab10e2a80f10 -~~	() https://git.kernel.org/stable/c/5abf2b761b998063f5e2bae93fd4ab10e2a80f10 - Patch
References	~~() https://git.kernel.org/stable/c/5c2a6a8daa17a3f65b38b9a5574bb362c13fa1d9 -~~	() https://git.kernel.org/stable/c/5c2a6a8daa17a3f65b38b9a5574bb362c13fa1d9 - Patch
References	~~() https://git.kernel.org/stable/c/7da6169b6ebb75816b57be3beb829afa74f3b4b6 -~~	() https://git.kernel.org/stable/c/7da6169b6ebb75816b57be3beb829afa74f3b4b6 - Patch
References	~~() https://git.kernel.org/stable/c/d1e0df1c57bd30871dd1c855742a7c346dbca853 -~~	() https://git.kernel.org/stable/c/d1e0df1c57bd30871dd1c855742a7c346dbca853 - Patch
References	~~() https://git.kernel.org/stable/c/e352acdd378e9263cc4c6018e588f2dac7161d07 -~~	() https://git.kernel.org/stable/c/e352acdd378e9263cc4c6018e588f2dac7161d07 - Patch
References	~~() https://git.kernel.org/stable/c/ee4222052a76559c20e821bc3519cefb58b6d3e9 -~~	() https://git.kernel.org/stable/c/ee4222052a76559c20e821bc3519cefb58b6d3e9 - Patch
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
First Time		Linux linux Kernel Linux
CWE		CWE-908

26 Feb 2025, 07:01

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-02-26 07:01

Updated : 2025-03-18 19:27

NVD link : CVE-2022-49235

Mitre link : CVE-2022-49235

CVE.ORG link : CVE-2022-49235

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

{"id": "CVE-2022-49235", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-02-26T07:01:00.500", "references": [{"url": "https://git.kernel.org/stable/c/0b700f7d06492de34964b6f414120043364f8191", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/11f11ac281f0c0b363d2940204f28bae0422ed71", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4d244b731188e0b63fc40a9d2dec72e9181fb37c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5abf2b761b998063f5e2bae93fd4ab10e2a80f10", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5c2a6a8daa17a3f65b38b9a5574bb362c13fa1d9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7da6169b6ebb75816b57be3beb829afa74f3b4b6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d1e0df1c57bd30871dd1c855742a7c346dbca853", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e352acdd378e9263cc4c6018e588f2dac7161d07", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ee4222052a76559c20e821bc3519cefb58b6d3e9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-908"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nath9k_htc: fix uninit value bugs\n\nSyzbot reported 2 KMSAN bugs in ath9k. All of them are caused by missing\nfield initialization.\n\nIn htc_connect_service() svc_meta_len and pad are not initialized. Based\non code it looks like in current skb there is no service data, so simply\ninitialize svc_meta_len to 0.\n\nhtc_issue_send() does not initialize htc_frame_hdr::control array. Based\non firmware code, it will initialize it by itself, so simply zero whole\narray to make KMSAN happy\n\nFail logs:\n\nBUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [inline]\n hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479\n htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [inline]\n htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275\n...\n\nUninit was created at:\n slab_post_alloc_hook mm/slab.h:524 [inline]\n slab_alloc_node mm/slub.c:3251 [inline]\n __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974\n kmalloc_reserve net/core/skbuff.c:354 [inline]\n __alloc_skb+0x545/0xf90 net/core/skbuff.c:426\n alloc_skb include/linux/skbuff.h:1126 [inline]\n htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258\n...\n\nBytes 4-7 of 18 are uninitialized\nMemory access of size 18 starts at ffff888027377e00\n\nBUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [inline]\n hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479\n htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [inline]\n htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275\n...\n\nUninit was created at:\n slab_post_alloc_hook mm/slab.h:524 [inline]\n slab_alloc_node mm/slub.c:3251 [inline]\n __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974\n kmalloc_reserve net/core/skbuff.c:354 [inline]\n __alloc_skb+0x545/0xf90 net/core/skbuff.c:426\n alloc_skb include/linux/skbuff.h:1126 [inline]\n htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258\n...\n\nBytes 16-17 of 18 are uninitialized\nMemory access of size 18 starts at ffff888027377e00"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ath9k_htc: corregir errores de valores no inicializados Syzbot inform\u00f3 de 2 errores de KMSAN en ath9k. Todos ellos son causados por la falta de inicializaci\u00f3n de campos. En htc_connect_service(), svc_meta_len y pad no se inicializan. Seg\u00fan el c\u00f3digo, parece que en el skb actual no hay datos de servicio, por lo que simplemente inicialice svc_meta_len a 0. htc_issue_send() no inicializa la matriz htc_frame_hdr::control. Basado en el c\u00f3digo del firmware, lo inicializar\u00e1 por s\u00ed mismo, as\u00ed que simplemente ponga a cero toda la matriz para que KMSAN est\u00e9 contento Registros de errores: ERROR: KMSAN: kernel-usb-infoleak en usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [en l\u00ednea] hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479 htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [en l\u00ednea] htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275 ... Uninit se cre\u00f3 en: slab_post_alloc_hook mm/slab.h:524 [en l\u00ednea] slab_alloc_node mm/slub.c:3251 [en l\u00ednea] __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974 kmalloc_reserve net/core/skbuff.c:354 [en l\u00ednea] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1126 [en l\u00ednea] htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258 ... Los bytes 4-7 de 18 no est\u00e1n inicializados El acceso a la memoria de tama\u00f1o 18 comienza en ffff888027377e00 ERROR: KMSAN: kernel-usb-infoleak en usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [en l\u00ednea] hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479 htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [en l\u00ednea] htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275 ... Uninit se cre\u00f3 en: slab_post_alloc_hook mm/slab.h:524 [en l\u00ednea] slab_alloc_node mm/slub.c:3251 [en l\u00ednea] __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974 kmalloc_reserve net/core/skbuff.c:354 [en l\u00ednea] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1126 [en l\u00ednea] htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258 ... Los bytes 16-17 de 18 no est\u00e1n inicializados. El acceso a la memoria de tama\u00f1o 18 comienza en ffff888027377e00"}], "lastModified": "2025-03-18T19:27:57.093", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AF88BCDF-8B1F-4DB2-A7C2-8831EFD200E7", "versionEndExcluding": "4.9.311", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D9B028C-6313-47F9-94B7-5F8122345E49", "versionEndExcluding": "4.14.276", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA28527A-11D3-41D2-9C4C-ECAC0D6A4A2D", "versionEndExcluding": "4.19.238", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8CB6E8F5-C2B1-46F3-A807-0F6104AC340F", "versionEndExcluding": "5.4.189", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "91D3BFD0-D3F3-4018-957C-96CCBF357D79", "versionEndExcluding": "5.10.110", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "27C42AE8-B387-43E2-938A-E1C8B40BE6D5", "versionEndExcluding": "5.15.33", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20C43679-0439-405A-B97F-685BEE50613B", "versionEndExcluding": "5.16.19", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "210C679C-CF84-44A3-8939-E629C87E54BF", "versionEndExcluding": "5.17.2", "versionStartIncluding": "5.17"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}

5.5 /10