CVE-2022-48772: media: lgdt3306a: Add a check against null-pointer-def
In the Linux kernel, the following vulnerability has been resolved:
media: lgdt3306a: Add a check against null-pointer-def
The driver should check whether the client provides the platformdata.
The following log reveals it:
[ 29.610324] BUG: KASAN: null-ptr-deref in kmemdup+0x30/0x40 [ 29.610730] Read of size 40 at addr 0000000000000000 by task bash/414 [ 29.612820] Call Trace: [ 29.613030] <TASK> [ 29.613201] dumpstacklvl+0x56/0x6f [ 29.613496] ? kmemdup+0x30/0x40 [ 29.613754] printreport.cold+0x494/0x6b7 [ 29.614082] ? kmemdup+0x30/0x40 [ 29.614340] kasanreport+0x8a/0x190 [ 29.614628] ? kmemdup+0x30/0x40 [ 29.614888] kasancheckrange+0x14d/0x1d0 [ 29.615213] memcpy+0x20/0x60 [ 29.615454] kmemdup+0x30/0x40 [ 29.615700] lgdt3306aprobe+0x52/0x310 [ 29.616339] i2cdeviceprobe+0x951/0xa90
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2022-48772?
CVE-2022-48772 is classified as a medium severity vulnerability due to its potential for causing null-pointer dereferences in the Linux kernel.
How do I fix CVE-2022-48772?
To fix CVE-2022-48772, upgrade the Linux kernel to versions 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.11-1, or 6.12.12-1.
Which versions of the Linux kernel are affected by CVE-2022-48772?
CVE-2022-48772 affects multiple Linux kernel versions from 5.4 up to, but not including, 6.7.
What is the nature of the issue in CVE-2022-48772?
CVE-2022-48772 involves a lack of null-pointer checks in the lgdt3306a driver, leading to a potential null-pointer dereference.
Is CVE-2022-48772 present in the latest Linux kernel releases?
CVE-2022-48772 has been resolved in the latest versions of the Linux kernel beyond the advised update versions.