Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1ea76d16569b7fc242b860c7e19549be028b13d1 before 578b67614ae0e4fba3945b66a4c8f9ae77115bcb; affected 1ea76d16569b7fc242b860c7e19549be028b13d1 before 2a33fc57133d6f39d62285df6706aeb1714967f1; affected 1ea76d16569b7fc242b860c7e19549be028b13d1 before dfcd3c010209927b9f45b860f046635dc32e32e1; affected 1ea76d16569b7fc242b860c7e19549be028b13d1 before 72af676551efe820e309a6c7681c2c4372f37376; affected 1ea76d16569b7fc242b860c7e19549be028b13d1 before b97719a66970601cd3151a3e2020f4454a1c4ff6 |
| Linux / Linux | affected 5.5; unaffected 0 before 5.5; unaffected 5.10.197 through 5.10.*; unaffected 5.15.133 through 5.15.*; unaffected 6.1.55 through 6.1.*; unaffected 6.5.5 through 6.5.*; unaffected 6.6 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/578b67614ae0e4fba3945b66a4c8f9ae77115bcb
- https://git.kernel.org/stable/c/2a33fc57133d6f39d62285df6706aeb1714967f1
- https://git.kernel.org/stable/c/dfcd3c010209927b9f45b860f046635dc32e32e1
- https://git.kernel.org/stable/c/72af676551efe820e309a6c7681c2c4372f37376
- https://git.kernel.org/stable/c/b97719a66970601cd3151a3e2020f4454a1c4ff6