CVE-2023-54066

Summary

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()")

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1ea76d16569b7fc242b860c7e19549be028b13d1 < 578b67614ae0e4fba3945b66a4c8f9ae77115bcbaffected
LinuxLinux1ea76d16569b7fc242b860c7e19549be028b13d1 < 2a33fc57133d6f39d62285df6706aeb1714967f1affected
LinuxLinux1ea76d16569b7fc242b860c7e19549be028b13d1 < dfcd3c010209927b9f45b860f046635dc32e32e1affected
LinuxLinux1ea76d16569b7fc242b860c7e19549be028b13d1 < 72af676551efe820e309a6c7681c2c4372f37376affected
LinuxLinux1ea76d16569b7fc242b860c7e19549be028b13d1 < b97719a66970601cd3151a3e2020f4454a1c4ff6affected
LinuxLinux5.5affected
LinuxLinux0 < 5.5unaffected
LinuxLinux5.10.197 <= 5.10.*unaffected
LinuxLinux5.15.133 <= 5.15.*unaffected
LinuxLinux6.1.55 <= 6.1.*unaffected
LinuxLinux6.5.5 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

References