Riskcovery

CVE-2023-54066

media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer

State
Published
Severity
Not scored
Published
Dec 24, 2025
Updated
May 11, 2026
Reserved
Dec 24, 2025

Read the record on cve.org

Description

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

media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer

In gl861_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 gl861_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()")

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 1ea76d16569b7fc242b860c7e19549be028b13d1 to before 578b67614ae0e4fba3945b66a4c8f9ae77115bcbAffected
  • 1ea76d16569b7fc242b860c7e19549be028b13d1 to before 2a33fc57133d6f39d62285df6706aeb1714967f1Affected
  • 1ea76d16569b7fc242b860c7e19549be028b13d1 to before dfcd3c010209927b9f45b860f046635dc32e32e1Affected
  • 1ea76d16569b7fc242b860c7e19549be028b13d1 to before 72af676551efe820e309a6c7681c2c4372f37376Affected
  • 1ea76d16569b7fc242b860c7e19549be028b13d1 to before b97719a66970601cd3151a3e2020f4454a1c4ff6Affected
LinuxLinux
  • 5.5Affected
  • before 5.5Not affected
  • 5.10.197 through 5.10.*Not affected
  • 5.15.133 through 5.15.*Not affected
  • 6.1.55 through 6.1.*Not affected
  • 6.5.5 through 6.5.*Not affected
  • 6.6 and laterNot affected

References

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