[Coverity CID: 220429] Out-of-bounds access in subsys/net/l2/ppp/ppp_l2.c

[zephyrbot]

Static code scan issues found in file:

https:/zephyrproject-rtos/zephyr/tree/169144afa1826511ee6ec3f53d590b2c0d39d3d4/subsys/net/l2/ppp/ppp_l2.c#L284

Category: Memory - corruptions
Function: net_ppp_carrier_on
Component: Networking
CID: 220429

Details:

zephyr/subsys/net/l2/ppp/ppp_l2.c

Line 284 in 169144a

if (!atomic_test_and_set_bit(&ctx->flags, PPP_CARRIER_UP)) {

278     }
279    
280     void net_ppp_carrier_on(struct net_if *iface)
281     {
282         struct ppp_context *ctx = net_if_l2_data(iface);
283    
>>>     CID 220429:  Memory - corruptions  (ARRAY_VS_SINGLETON)
>>>     Passing "&ctx->flags" to function "atomic_test_and_set_bit" which uses it as an array. This might corrupt or misinterpret adjacent memory locations.
284         if (!atomic_test_and_set_bit(&ctx->flags, PPP_CARRIER_UP)) {
285             k_work_submit(&ctx->carrier_work);
286         }
287     }
288    
289     void net_ppp_carrier_off(struct net_if *iface)

Please fix or provide comments in coverity using the link:

https://scan9.coverity.com/reports.htm#v29271/p12996

Note: This issue was created automatically. Priority was set based on classification
of the file affected and the impact field in coverity. Assignees were set using the CODEOWNERS file.

[galak]

Marking this as a false positive.