CVE-2023-53220

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Source
https://cve.org/CVERecord?id=CVE-2023-53220
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53220.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-53220
Downstream
Related
Published
2025-09-15T14:21:49.075Z
Modified
2026-03-20T12:33:02.304512Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()
Details

In the Linux kernel, the following vulnerability has been resolved:

media: az6007: Fix null-ptr-deref in az6007i2cxfer()

In az6007i2cxfer, 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 az6007i2cxfer. 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 az6027i2cxfer()")

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53220.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
caa1a700ed2a06a831e6a7db5d9f213fc63caee3
Fixed
c6763fefa267f6e62595a6ac1f57815d99fc90b7
Fixed
adcb73f8ce9aec48b1f85223f401c1574015d8d2
Fixed
991c77fe18c6f374bbf83376f8c42550aa565662
Fixed
a9def3e9718a4dc756f48db147d42ec41a966240
Fixed
5b1ea100ad3695025969dc4693f307877fb688d6
Fixed
6ab7ea4e17d6a605d05308adf8f3408924770cba
Fixed
a1110f19d4940e4185251d072cbb0ff51486a1e7
Fixed
1047f9343011f2cedc73c64829686206a7e9fc3f

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53220.json"