CVE-2022-48630

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

Published Mar 5, 2024 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs 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:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Linux
Published
Updated
May 23, 2026, 3:20 PM
Reserved
Feb 25, 2024, 1:44 PM
Status
Analyzed
Published
Mar 5, 2024, 12:15 PM
Modified
Jun 17, 2026, 5:15 AM
Severity
Low
Public date
Mar 5, 2024, 12:00 AM