In the Linux kernel, the following vulnerability has been resolved: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() In az6007_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach az6007_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f cve-icon cve-icon
https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6 cve-icon cve-icon
https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba cve-icon cve-icon
https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662 cve-icon cve-icon
https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7 cve-icon cve-icon
https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 cve-icon cve-icon
https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 cve-icon cve-icon
https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025091512-CVE-2023-53220-e514@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53220 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53220 cve-icon
History

Wed, 03 Dec 2025 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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'}

Wed, 17 Sep 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Tue, 16 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Mon, 15 Sep 2025 14:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() In az6007_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach az6007_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
Title media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-15T14:21:49.075Z

Updated: 2025-09-15T14:21:49.075Z

Reserved: 2025-09-15T14:19:21.845Z

Link: CVE-2023-53220

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2025-09-15T15:15:48.743

Modified: 2025-12-03T15:29:49.683

Link: CVE-2023-53220

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-09-15T00:00:00Z

Links: CVE-2023-53220 - Bugzilla