CVE-2023-54066
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()")
How to fix
- Linux Linux578b67614ae0e4fba3945b66a4c8f9ae77115bcb, 2a33fc57133d6f39d62285df6706aeb1714967f1, dfcd3c010209927b9f45b860f046635dc32e32e1, 72af676551efe820e309a6c7681c2c4372f37376, b97719a66970601cd3151a3e2020f4454a1c4ff6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1ea76d16569b7fc242b860c7e19549be028b13d1 ≤ v < 578b67614ae0e4fba3945b66a4c8f9ae77115bcb, 1ea76d16569b7fc242b860c7e19549be028b13d1 ≤ v < 2a33fc57133d6f39d62285df6706aeb1714967f1, 1ea76d16569b7fc242b860c7e19549be028b13d1 ≤ v < dfcd3c010209927b9f45b860f046635dc32e32e1, 1ea76d16569b7fc242b860c7e19549be028b13d1 ≤ v < 72af676551efe820e309a6c7681c2c4372f37376, 1ea76d16569b7fc242b860c7e19549be028b13d1 ≤ v < b97719a66970601cd3151a3e2020f4454a1c4ff6, 5.5 | 578b67614ae0e4fba3945b66a4c8f9ae77115bcb, 2a33fc57133d6f39d62285df6706aeb1714967f1, dfcd3c010209927b9f45b860f046635dc32e32e1, 72af676551efe820e309a6c7681c2c4372f37376, b97719a66970601cd3151a3e2020f4454a1c4ff6 |
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