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PUBLISHED

CVE-2022-48630

crypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ

Reserved:2024-02-25
Published:2024-03-05
Updated:2024-04-04

Description

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.

Product status

Default status
unaffected

a8e32bbb96c2 before 71a89789552b
affected

184f7bd08ce5 before 8be06f62b426
affected

0f9b7b8df175 before 233a3cc60e7a
affected

ab9337c7cb6f before 8a06f25f5941
affected

a680b1832ced before 05d4d17475d8
affected

a680b1832ced before 16287397ec5c
affected

Default status
affected

5.17
affected

Any version before 5.17
unaffected

4.19.245
unaffected

5.4.196
unaffected

5.10.118
unaffected

5.15.42
unaffected

5.17.10
unaffected

5.18
unaffected

References

https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550

https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae

https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c

https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce

https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3

https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d

cve.org CVE-2022-48630

nvd.nist.gov CVE-2022-48630

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