What’s Vulnerable › Vulnerabilities

CVE-2023-53146: media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-14 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer() In dw2102_i2c_transfer, 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 dw2102_i2c_transfer. 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 950e252cb469 ("[media] dw2102: limit messages to buffer size")

Affected products

• Linux kernel: before 4.14.326; from 4.15 before 4.19.295; from 4.20 before 5.4.257; from 5.5 before 5.10.197; from 5.11 before 5.15.133; from 5.16 before 6.1.55 — fixed in 4.14.326, 4.19.295, 5.10.197, 5.15.133, 5.4.257, 6.1.55

How to fix

Upgrade to a fixed version: Linux kernel 4.14.326, 4.19.295, 5.10.197, 5.15.133. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/08dfcbd03b2b7f918c4f87c6ff637054e510df74
• https://git.kernel.org/stable/c/5ae544d94abc8ff77b1b9bf8774def3fa5689b5b
• https://git.kernel.org/stable/c/77cbd42d29de9ffc93d5529bab8813cde53af14c
• https://git.kernel.org/stable/c/903566208ae6bb9c0e7e54355ce75bf6cf72485d
• https://git.kernel.org/stable/c/97fdbdb750342cbc204befde976872fedb406ee6
• https://git.kernel.org/stable/c/beb9550494e7349f92b9eaa283256a5ad9b1c9be
• https://git.kernel.org/stable/c/ecbe6d011b95c7da59f014f8d26cb7245ed1e11e
• https://git.kernel.org/stable/c/fb28afab113a82b89ffec48c8155ec05b4f8cb5e

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