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NVD / CVE Program· CNA Linux

CVE-2022-48630: crypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 05d4d17475d8d094c519bb51658bc47899c175e3, 16287397ec5c08aa58db6acf7dbc55470d78087d, 233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 05d4d17475d8d094c519bb51658bc47899c175e3, 16287397ec5c08aa58db6acf7dbc55470d78087d, 233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 5, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.19.236 and later · before 4.19.245
  • linux linux kernel5.4.187 and later · before 5.4.196
  • linux linux kernel5.10.108 and later · before 5.10.118
  • linux linux kernel5.15.31 and later · before 5.15.42
  • linux linux kernel5.17 and later · before 5.17.10
  • linux linux kernel5.18

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 485995cbc98a4f77cfd4f8ed4dd7ff8ab262964d, 5.17affected
    • a8e32bbb96c25b7ab29b1894dcd45e0b3b08fd9d and later · before 71a89789552b7faf3ef27969b9bc783fa0df3550affected · git
    • 184f7bd08ce56f003530fc19f160d54e75bf5c9d and later · before 8be06f62b426801dba43ddf8893952a0e62ab6aeaffected · git
    • 0f9b7b8df17525e464294c916acc8194ce38446b and later · before 233a3cc60e7a8fe0be8cf9934ae7b67ba25a866caffected · git
    • ab9337c7cb6f875b6286440b1adfbeeef2b2b2bd and later · before 8a06f25f5941c145773204f2f7abef95b4ffb8ceaffected · git
    • a680b1832ced3b5fa7c93484248fd221ea0d614b and later · before 05d4d17475d8d094c519bb51658bc47899c175e3affected · git
    • a680b1832ced3b5fa7c93484248fd221ea0d614b and later · before 16287397ec5c08aa58db6acf7dbc55470d78087daffected · git
    • 4.19.236 and later · before 4.19.245affected · semver
    • 5.4.187 and later · before 5.4.196affected · semver
    • 5.10.108 and later · before 5.10.118affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.17.11-15.17.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2021-47107Mar 4, 2024 · NFSD: Fix READDIR buffer overflow
    31Monitor
  • ← EarlierCVE-2022-48629Mar 5, 2024 · crypto: qcom-rng - ensure buffer for generate is completely filled
    22Monitor
  • Later →CVE-2023-52583Mar 6, 2024 · ceph: fix deadlock or deadcode of misusing dget()
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux05d4d17475d8d094c519bb51658bc47899c175e3Vendor (CNA)
Linux Linux16287397ec5c08aa58db6acf7dbc55470d78087dVendor (CNA)
Linux Linux233a3cc60e7a8fe0be8cf9934ae7b67ba25a866cVendor (CNA)
Linux Linux4.19.245Vendor (CNA)
Linux Linux5.10.118Vendor (CNA)
Linux Linux5.15.42Vendor (CNA)
Linux Linux5.17Vendor (CNA)
Linux Linux5.4.196Vendor (CNA)
Linux Linux71a89789552b7faf3ef27969b9bc783fa0df3550Vendor (CNA)
Linux Linux8a06f25f5941c145773204f2f7abef95b4ffb8ceVendor (CNA)
Linux Linux8be06f62b426801dba43ddf8893952a0e62ab6aeVendor (CNA)
debian:linux5.17.11-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-2703257 days apartf2fs: fix to avoid potential panic during recovery
    25Monitor
  • CVE-2022-4863554 days apartfsdax: Fix infinite loop in dax_iomap_rw()
    24Monitor
  • CVE-2024-266038 days apartx86/fpu: Stop relying on userspace for info to fault in xsave buffer
    22Monitor
  • CVE-2021-4715920 days apartnet: dsa: fix a crash if ->get_sset_count() fails
    22Monitor
  • CVE-2023-5263528 days apartPM / devfreq: Synchronize devfreq_monitor_[start/stop]
    22Monitor
  • CVE-2024-2668128 days apartnetdevsim: avoid potential loop in nsim_dev_trap_report_work()
    22Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records