CVE-2021-47651
In the Linux kernel, the following vulnerability has been resolved: soc: qcom: rpmpd: Check for null return of devm_kcalloc Because of the possible failure of the allocation, data->domains might be NULL pointer and will cause the dereference of the NULL pointer later. Therefore, it might be better to check it and directly return -ENOMEM without releasing data manually if fails, because the comment of the devm_kmalloc() says "Memory allocated with this function is automatically freed on driver detach.".
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: soc: qcom: rpmpd: Check for null return of devm_kcalloc Because of the possible failure of the allocation, data->domains might be NULL pointer and will cause the dereference of the NULL pointer later. Therefore, it might be better to check it and directly return -ENOMEM without releasing data manually if fails, because the comment of the devm_kmalloc() says "Memory allocated with this function is automatically freed on driver detach.".
05 / REFERENCES
Further evidence
- https://git.kernel.org/stable/c/31b5124d742969ea8bf7a1360596f548ca23e770
- https://git.kernel.org/stable/c/5a811126d38f9767a20cc271b34db7c8efc5a46c
- https://git.kernel.org/stable/c/724376c30af5a57686b223dbcd6188e07d2a1de2
- https://git.kernel.org/stable/c/755dbc3d73789ac9f0017c729abf5e4b153bf799
- https://git.kernel.org/stable/c/84b89fa877ad576e9ee8130f412cfd592f274508
- https://git.kernel.org/stable/c/b5d6eba71997b6d661935d2b15094ac7f9f6132d