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NVD / CVE Program· CNA Linux

CVE-2022-49525: media: cx25821: Fix the warning when removing the module

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: 0.27% (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 005fd553f5f10fe8618d92f94ad10f9051eac331, 1f0fc1dfb5fdd456657519a97fab83691b96c6a0, 2203436a4d24302871617373a7eb21bc17e38762.

Low priority for now. Upgrade to Linux Linux 005fd553f5f10fe8618d92f94ad10f9051eac331, 1f0fc1dfb5fdd456657519a97fab83691b96c6a0, 2203436a4d24302871617373a7eb21bc17e38762 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: cx25821: Fix the warning when removing the module When removing the module, we will get the following warning: [ 14.746697] remove_proc_entry: removing non-empty directory 'irq/21', leaking at least 'cx25821[1]' [ 14.747449] WARNING: CPU: 4 PID: 368 at fs/proc/generic.c:717 remove_proc_entry+0x389/0x3f0 [ 14.751611] RIP: 0010:remove_proc_entry+0x389/0x3f0 [ 14.759589] Call Trace: [ 14.759792] <TASK> [ 14.759975] unregister_irq_proc+0x14c/0x170 [ 14.760340] irq_free_descs+0x94/0xe0 [ 14.760640] mp_unmap_irq+0xb6/0x100 [ 14.760937] acpi_unregister_gsi_ioapic+0x27/0x40 [ 14.761334] acpi_pci_irq_disable+0x1d3/0x320 [ 14.761688] pci_disable_device+0x1ad/0x380 [ 14.762027] ? _raw_spin_unlock_irqrestore+0x2d/0x60 [ 14.762442] ? cx25821_shutdown+0x20/0x9f0 [cx25821] [ 14.762848] cx25821_finidev+0x48/0xc0 [cx25821] [ 14.763242] pci_device_remove+0x92/0x240 Fix this by freeing the irq before call pci_disable_device().

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 20th percentile
CWE
—

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%

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

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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 kernelbefore 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

    • 2.6.32affected
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 4d6295b6d986476232332fffd08575b185f90d81affected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 5beb85ff7d005ddb7bf604a4f2dc76f01b84b318affected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 258639bc55a586ee6df92d89786ccf1c71546d70affected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 222292930c8ecc3516e03ec1f9fa8448be7ff496affected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 3f94169affa33c9db4a439d88f09cb2ed3a33332affected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 1f0fc1dfb5fdd456657519a97fab83691b96c6a0affected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 9d92291698e5cc35a2b8a1106a01ddd7d60ade2daffected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 005fd553f5f10fe8618d92f94ad10f9051eac331affected · git
    • 02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b and later · before 2203436a4d24302871617373a7eb21bc17e38762affected · 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-2022-49523Feb 26, 2025 · ath11k: disable spectral scan during spectral deinit
    22Monitor
  • ← EarlierCVE-2022-49524Feb 26, 2025 · media: pci: cx23885: Fix the error handling in cx23885_initdev()
    31Monitor
  • Later →CVE-2022-49527Feb 26, 2025 · media: venus: hfi: avoid null dereference in deinit
    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 Linux005fd553f5f10fe8618d92f94ad10f9051eac331Vendor (CNA)
Linux Linux1f0fc1dfb5fdd456657519a97fab83691b96c6a0Vendor (CNA)
Linux Linux2203436a4d24302871617373a7eb21bc17e38762Vendor (CNA)
Linux Linux222292930c8ecc3516e03ec1f9fa8448be7ff496Vendor (CNA)
Linux Linux258639bc55a586ee6df92d89786ccf1c71546d70Vendor (CNA)
Linux Linux3f94169affa33c9db4a439d88f09cb2ed3a33332Vendor (CNA)
Linux Linux4d6295b6d986476232332fffd08575b185f90d81Vendor (CNA)
Linux Linux5beb85ff7d005ddb7bf604a4f2dc76f01b84b318Vendor (CNA)
Linux Linux9d92291698e5cc35a2b8a1106a01ddd7d60ade2dVendor (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.

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.

No nightly-computed relations.

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
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)

—

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 (8 more)

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

All records