In the Linux kernel, the following vulnerability has been resolved:
HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()
In picolcd_send_and_wait(), an integer overflow of the signed loop counter
'k' can theoretically lead to a NULL pointer dereference of 'raw_data'.
If the loop executes more than INT_MAX times, 'k' becomes negative,
making the condition 'k < size' true even when 'size' is 0.
Change the type of 'k' to 'unsigned int' to prevent the overflow and
eliminate the out-of-bounds access.
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
[jkosina@suse.com: extended hash length]
from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before 42dc0b7b55fe0499fc09183f34a1c46d1dcccf77; from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before 48caee2c106b03301c72fe389ebff00d852c58d5; from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before dc176447c7279435c46735db7da81aed1ec25cc2; from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before a02d5d7ad7ae5fa3756b8332f7350e973085dcb3; from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61; from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before d354e523c6f740db758cafcd4c11bb7913285ed8; from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before ef649703dce0df1364fcec3cdad9b32d1c522939; from fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 before 0021eb09041f021c079be1022934a280f7f176c0
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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