5.5

CVE-2023-53220: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()

Modified
AliasesUBUNTU-CVE-2023-53220DEBIAN-CVE-2023-53220
Published 15-09-2025Last modified 11-05-2026

Vulnerability summary

CVE-2023-53220 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 12
OPENSUSE-SU-2025:15585-1RHSA-2024:9315SUSE-SU-2025:03600-1SUSE-SU-2025:03626-1SUSE-SU-2025:03634-1SUSE-SU-2025:20851-1

Timeline

  1. 15-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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()")

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu124 products
  • linuxAll versions (No fix recorded) | < 5.4.0-169.187 | < 5.15.0-94.104
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1116.126 | < 5.15.0-1053.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < c6763fefa267f6e62595a6ac1f57815d99fc90b7 | ≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < adcb73f8ce9aec48b1f85223f401c1574015d8d2 | ≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < 991c77fe18c6f374bbf83376f8c42550aa565662 | ≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < a9def3e9718a4dc756f48db147d42ec41a966240 | ≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < 5b1ea100ad3695025969dc4693f307877fb688d6 | ≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < 6ab7ea4e17d6a605d05308adf8f3408924770cba | ≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < a1110f19d4940e4185251d072cbb0ff51486a1e7 | ≥ caa1a700ed2a06a831e6a7db5d9f213fc63caee3, < 1047f9343011f2cedc73c64829686206a7e9fc3f | 3.4
  • linux_kernel< 4.14.326 | ≥ 4.15, < 4.19.295 | ≥ 4.20, < 5.4.257 | ≥ 5.5, < 5.10.197 | ≥ 5.11, < 5.15.133 | ≥ 5.16, < 6.1.55 | ≥ 6.2, < 6.5.5
Debian1 product
  • linux< 6.1.55-1 | < 6.5.6-1

3 vendors · 127 products

References

12 links
Show all 12 references