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ReviewHigh

CVE-2022-45884

linux kernel, h300s firmware

An issue was discovered in the Linux kernel through 6.0.9. drivers/media/dvb-core/dvbdev.c has a use-after-free, related to dvb_register_device dynamically allocating fops.

CVSS
7
EPSS
0.32%
24.7% percentile
CISA KEV
Not listed
Published
2022.11.25
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.32%
Technical severityCVSS 7

Vulnerability overview

An issue was discovered in the Linux kernel through 6.0.9. drivers/media/dvb-core/dvbdev.c has a use-after-free, related to dvb_register_device dynamically allocating fops.

Affected product and versions

Product
linux kernel, h300s firmware
Affected versions
< 4.19.311, >= 4.20 < 5.4.249, >= 5.5 < 5.10.185, >= 5.11 < 5.15.116, >= 5.16 < 6.1.33, >= 6.2 < 6.3.7
Fixed versions
4.19.311, 5.4.249, 5.10.185, 5.15.116, 6.1.33, 6.3.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that linux kernel, h300s firmware and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-362, CWE-416