CVE-2023-52915 media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer

What is CVE-2023-52915?

CVE-2023-52915 is a medium-severity vulnerability in Linux kernel, published on 6 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer

In af9035_i2c_master_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 af9035_i2c_master_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()")

Weakness: CWE-476

Which versions are affected by CVE-2023-52915?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-52915?

Apply the vendor's patch.

Is CVE-2023-52915 being exploited?

There is no known exploitation of CVE-2023-52915 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-52915, DEBIAN-CVE-2023-52915, GHSA-rpfq-qgpp-7qm9, UBUNTU-CVE-2023-52915.