CVE-2023-53220 (GCVE-0-2023-53220)
Vulnerability from cvelistv5 – Published: 2025-09-15 14:21 – Updated: 2026-05-11 19:40
VLAI
EPSS
VEX
Title
media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()
Summary
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()")
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 17:50 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < c6763fefa267f6e62595a6ac1f57815d99fc90b7
(git)
Affected: caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < adcb73f8ce9aec48b1f85223f401c1574015d8d2 (git) Affected: caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < 991c77fe18c6f374bbf83376f8c42550aa565662 (git) Affected: caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < a9def3e9718a4dc756f48db147d42ec41a966240 (git) Affected: caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < 5b1ea100ad3695025969dc4693f307877fb688d6 (git) Affected: caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < 6ab7ea4e17d6a605d05308adf8f3408924770cba (git) Affected: caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < a1110f19d4940e4185251d072cbb0ff51486a1e7 (git) Affected: caa1a700ed2a06a831e6a7db5d9f213fc63caee3 , < 1047f9343011f2cedc73c64829686206a7e9fc3f (git) |
guessed | |
| Linux | Linux |
Affected:
3.4
Unaffected: 0 , < 3.4 (semver) Unaffected: 4.14.326 , ≤ 4.14.* (semver) Unaffected: 4.19.295 , ≤ 4.19.* (semver) Unaffected: 5.4.257 , ≤ 5.4.* (semver) Unaffected: 5.10.197 , ≤ 5.10.* (semver) Unaffected: 5.15.133 , ≤ 5.15.* (semver) Unaffected: 6.1.55 , ≤ 6.1.* (semver) Unaffected: 6.5.5 , ≤ 6.5.* (semver) Unaffected: 6.6 , ≤ * (original_commit_for_fix) |
guessed |
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{
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"tags": [
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}
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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