CVE-2022-48630

In the Linux kernel, the following vulnerability has been resolved: crypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ The commit referenced in the Fixes tag removed the 'break' from the else branch in qcom_rng_read(), causing an infinite loop whenever 'max' is not a multiple of WORD_SZ. This can be reproduced e.g. by running: kcapi-rng -b 67 >/dev/null There are many ways to fix this without adding back the 'break', but they all seem more awkward than simply adding it back, so do just that. Tested on a machine with Qualcomm Amberwing processor.

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/05d4d17475d8d094c519bb51658bc47899c175e3	Patch
https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d	Patch
https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c	Patch
https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550	Patch
https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce	Patch
https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae	Patch
https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3	Patch
https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d	Patch
https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c	Patch
https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550	Patch
https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce	Patch
https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae	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:5.18:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.18:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.18:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.18:rc4::::::
	cpe:2.3:o:linux:linux_kernel:5.18:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.18:rc6::::::
	cpe:2.3:o:linux:linux_kernel:5.18:rc7::::::
	cpe:2.3:o:linux:linux_kernel:5.18:rc9::::::

History

03 Feb 2025, 14:09

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel:5.18:rc4:::::: cpe:2.3:o:linux:linux_kernel:5.18:rc2:::::: cpe:2.3:o:linux:linux_kernel:5.18:rc1:::::: cpe:2.3:o:linux:linux_kernel:5.18:rc7:::::: cpe:2.3:o:linux:linux_kernel:5.18:rc3:::::: cpe:2.3:o:linux:linux_kernel:5.18:rc5:::::: cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.18:rc6:::::: cpe:2.3:o:linux:linux_kernel:5.18:rc9::::::
First Time		Linux Linux linux Kernel
CWE		CWE-835
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
References	~~() https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3 -~~	() https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3 - Patch
References	~~() https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d -~~	() https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d - Patch
References	~~() https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c -~~	() https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c - Patch
References	~~() https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550 -~~	() https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550 - Patch
References	~~() https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce -~~	() https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce - Patch
References	~~() https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae -~~	() https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae - Patch

21 Nov 2024, 07:33

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3 -~~	() https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3 -
References	~~() https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d -~~	() https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d -
References	~~() https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c -~~	() https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c -
References	~~() https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550 -~~	() https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550 -
References	~~() https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce -~~	() https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce -
References	~~() https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae -~~	() https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae -

05 Mar 2024, 13:41

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-03-05 12:15

Updated : 2025-02-03 14:09

NVD link : CVE-2022-48630

Mitre link : CVE-2022-48630

CVE.ORG link : CVE-2022-48630

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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This can be reproduced e.g. by running:\n\n kcapi-rng -b 67 >/dev/null\n\nThere are many ways to fix this without adding back the 'break', but\nthey all seem more awkward than simply adding it back, so do just that.\n\nTested on a machine with Qualcomm Amberwing processor."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: crypto: qcom-rng: corrige el bucle infinito en solicitudes que no sean m\u00faltiples de WORD_SZ. El commit a la que se hace referencia en la etiqueta Fixes elimin\u00f3 la 'ruptura' de la rama else en qcom_rng_read(), lo que provoc\u00f3 una bucle infinito siempre que 'max' no sea un m\u00faltiplo de WORD_SZ. Esto se puede reproducir, por ejemplo, ejecutando: kcapi-rng -b 67 >/dev/null Hay muchas formas de solucionar este problema sin volver a agregar el 'descanso', pero todas parecen m\u00e1s inc\u00f3modas que simplemente volver a agregarlo, as\u00ed que hazlo. Probado en una m\u00e1quina con procesador Qualcomm Amberwing."}], "lastModified": "2025-02-03T14:09:55.317", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "90CA0C29-659F-4285-B5C0-F4F9303CCA02", "versionEndExcluding": "4.19.245", "versionStartIncluding": "4.19.236"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EA59FE65-870A-4BF7-8624-F76F50276DD2", "versionEndExcluding": "5.4.196", "versionStartIncluding": "5.4.187"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "563451EB-38D3-4F95-81D0-5AE1AF7490E0", "versionEndExcluding": "5.10.118", "versionStartIncluding": "5.10.108"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "525F7F2B-3F39-4BF6-841B-313E80A92E89", "versionEndExcluding": "5.15.42", "versionStartIncluding": "5.15.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D634AA3E-A052-40C6-A749-5B2BE8652ABC", "versionEndExcluding": "5.17.10", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6AD94161-84BB-42E6-9882-4FC0C42E9FC1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7AB06DDF-3C2B-416D-B448-E990D8FF67A9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EAE6C6C5-4D21-4C04-897C-70CBBB3D7B91"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DA5F085D-52F3-4EE2-8353-455D1A6FE073"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D6EE5B78-0D83-4715-893C-ABD69B49E7FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EE723F14-047B-4FCF-B109-E0542EDFB063"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2FCFCE58-5118-4D05-864E-C82CF20EABE5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.18:rc9:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9C3E5BC9-613C-4362-BF02-153A5BBFFB2F"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}

5.5 /10