Description
In the Linux kernel, the following vulnerability has been resolved: powercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw() The get_pd_power_uw() function can crash with a NULL pointer dereference when em_cpu_get() returns NULL. This occurs when a CPU becomes impossible during runtime, causing get_cpu_device() to return NULL, which propagates through em_cpu_get() and leads to a crash when em_span_cpus() dereferences the NULL pointer. Add a NULL check after em_cpu_get() and return 0 if unavailable, matching the existing fallback behavior in __dtpm_cpu_setup(). [ rjw: Drop an excess empty code line ]
Product status
eb82bace893169b319c563b7f813c58a0a5a9f76 before 27914f2b795e2b58e9506f281dcdd98fef09d3c2
eb82bace893169b319c563b7f813c58a0a5a9f76 before c6ec27091cf5ac05094c1fe3a6ce914cf711a37c
eb82bace893169b319c563b7f813c58a0a5a9f76 before 8374ac7d69a57d737e701a851ffe980a0d27d3ad
eb82bace893169b319c563b7f813c58a0a5a9f76 before 27e0318f0ea69fcfa32228847debc384ade14578
eb82bace893169b319c563b7f813c58a0a5a9f76 before 2fd001a0075ac01dc64a28a8e21226b3d989a91d
eb82bace893169b319c563b7f813c58a0a5a9f76 before 46dc57406887dd02565cb264224194a6776d882b
5.16
Any version before 5.16
6.1.148
6.6.102
6.12.42
6.15.10
6.16.1
6.17
References
git.kernel.org/...c/27914f2b795e2b58e9506f281dcdd98fef09d3c2
git.kernel.org/...c/c6ec27091cf5ac05094c1fe3a6ce914cf711a37c
git.kernel.org/...c/8374ac7d69a57d737e701a851ffe980a0d27d3ad
git.kernel.org/...c/27e0318f0ea69fcfa32228847debc384ade14578
git.kernel.org/...c/2fd001a0075ac01dc64a28a8e21226b3d989a91d
git.kernel.org/...c/46dc57406887dd02565cb264224194a6776d882b
