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NVD / CVE Program· CNA Linux

CVE-2022-49478: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.29% (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 1310fc3538dcc375a2f46ef0a438512c2ca32827, 24e807541e4a9263ed928e6ae3498de3ad43bd1e, 2e004fe914b243db41fa96f9e583385f360ea58e.

Low priority for now. Upgrade to Linux Linux 1310fc3538dcc375a2f46ef0a438512c2ca32827, 24e807541e4a9263ed928e6ae3498de3ad43bd1e, 2e004fe914b243db41fa96f9e583385f360ea58e 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: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init Syzbot reported that -1 is used as array index. The problem was in missing validation check. hdw->unit_number is initialized with -1 and then if init table walk fails this value remains unchanged. Since code blindly uses this member for array indexing adding sanity check is the easiest fix for that. hdw->workpoll initialization moved upper to prevent warning in __flush_work.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 21th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

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 kernel2.6.18 and later · before 4.9.318
  • linux linux kernel4.10 and later · before 4.14.283
  • linux linux kernel4.15 and later · before 4.19.247
  • linux linux kernel4.20 and later · before 5.4.198
  • linux linux kernel5.5 and later · before 5.10.121
  • linux linux kernel5.11 and later · before 5.15.46
  • linux linux kernel5.16 and later · before 5.17.14
  • linux linux kernel5.18 and later · before 5.18.3

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

    • 2.6.18affected
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before 4351bfe36aba9fa7dc9d68d498d25d41a0f45e67affected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before 2e004fe914b243db41fa96f9e583385f360ea58eaffected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before a3660e06675bccec4bf149c7229ea1d491ba10d7affected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before 1310fc3538dcc375a2f46ef0a438512c2ca32827affected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before a3304766d9384886e6d3092c776273526947a2e9affected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before 3309c2c574e13b21b44729f5bdbf21f60189b79aaffected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before f99a8b1ec0eddc2931aeaa4f490277a15b39f511affected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before 24e807541e4a9263ed928e6ae3498de3ad43bd1eaffected · git
    • d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and later · before 471bec68457aaf981add77b4f590d65dd7da1059affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.5-15.18.5-1

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-2022-49476Feb 26, 2025 · mt76: mt7921: fix kernel crash at mt7921_pci_remove
    22Monitor
  • ← EarlierCVE-2022-49477Feb 26, 2025 · ASoC: samsung: Fix refcount leak in aries_audio_probe
    22Monitor
  • Later →CVE-2022-49479Feb 26, 2025 · mt76: fix tx status related use-after-free race on station removal
    35Monitor

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 Linux1310fc3538dcc375a2f46ef0a438512c2ca32827Vendor (CNA)
Linux Linux24e807541e4a9263ed928e6ae3498de3ad43bd1eVendor (CNA)
Linux Linux2e004fe914b243db41fa96f9e583385f360ea58eVendor (CNA)
Linux Linux3309c2c574e13b21b44729f5bdbf21f60189b79aVendor (CNA)
Linux Linux4351bfe36aba9fa7dc9d68d498d25d41a0f45e67Vendor (CNA)
Linux Linux471bec68457aaf981add77b4f590d65dd7da1059Vendor (CNA)
Linux Linuxa3304766d9384886e6d3092c776273526947a2e9Vendor (CNA)
Linux Linuxa3660e06675bccec4bf149c7229ea1d491ba10d7Vendor (CNA)
Linux Linuxf99a8b1ec0eddc2931aeaa4f490277a15b39f511Vendor (CNA)
debian:linux5.18.5-1 · 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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-2021-47548278 days apartethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
    39Monitor
  • CVE-2026-64018508 days apartnet: mana: validate rx_req_idx to prevent out-of-bounds array access
    37Monitor
  • CVE-2026-23246385 days apartwifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration
    35Monitor
  • CVE-2026-43110434 days apartwifi: brcmfmac: validate bsscfg indices in IF events
    35Monitor
  • CVE-2026-43172434 days apartwifi: iwlwifi: fix 22000 series SMEM parsing
    35Monitor
  • CVE-2022-491700 days apartf2fs: fix to do sanity check on curseg->alloc_type
    31Monitor

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).

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

Weakness class (CWE)

CWE-129 · Improper Validation of Array Index

CVSS vector

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

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (8 more)

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

All records