All 3.4+ kernels have some form of page sanitization, however 3.0, 3.4 and 4.4 lacks slub sanitization

3.0 and 3.4
NEEDS slub_debug=P

3.10
0006-AndroidHardening-Kernel_Hardening/3.10/0007.patch:Subject: [PATCH] add page sanitization / verification
0006-AndroidHardening-Kernel_Hardening/3.10/0008.patch:Subject: [PATCH] add slub sanitization
0006-AndroidHardening-Kernel_Hardening/3.10/0009.patch:Subject: [PATCH] slub: add check for write-after-free

3.18
0006-AndroidHardening-Kernel_Hardening/3.18/0024.patch:Subject: [PATCH] add page sanitization / verification
0006-AndroidHardening-Kernel_Hardening/3.18/0025.patch:Subject: [PATCH] add slub sanitization
0006-AndroidHardening-Kernel_Hardening/3.18/0026.patch:Subject: [PATCH] slub: add check for write-after-free

4.4
0008-Graphene-Kernel_Hardening/4.4/0020.patch:Subject: [PATCH] add simpler page sanitization
0008-Graphene-Kernel_Hardening/4.4/0021.patch:Subject: [PATCH] add support for verifying page sanitization
0008-Graphene-Kernel_Hardening/4.4/0022.patch:Subject: [PATCH] slub: add basic full slab sanitization
0008-Graphene-Kernel_Hardening/4.4/0023.patch:Subject: [PATCH] slub: add support for verifying slab sanitization
NEEDS slub_debug=P: yandex/sdm660, oneplus/msm8998, razer/msm8998, sony/sdm660, xiaomi/sdm660, essential/msm8998, fxtec/msm8998, zuk/msm8996

4.9
0008-Graphene-Kernel_Hardening/4.9/0035.patch:Subject: [PATCH] add simpler page sanitization
0008-Graphene-Kernel_Hardening/4.9/0036.patch:Subject: [PATCH] add support for verifying page sanitization
0008-Graphene-Kernel_Hardening/4.9/0037.patch:Subject: [PATCH] slub: add basic full slab sanitization
0008-Graphene-Kernel_Hardening/4.9/0038.patch:Subject: [PATCH] slub: add support for verifying slab sanitization

4.14
0008-Graphene-Kernel_Hardening/4.14/0063.patch:Subject: [PATCH] mm: add support for verifying page sanitization
0008-Graphene-Kernel_Hardening/4.14/0064.patch:Subject: [PATCH] slub: Extend init_on_free to slab caches with constructors
0008-Graphene-Kernel_Hardening/4.14/0065.patch:Subject: [PATCH] slub: Add support for verifying slab sanitization
0008-Graphene-Kernel_Hardening/4.14/0066.patch:Subject: [PATCH] slub: Extend init_on_alloc to slab caches with constructors
NEEDS slub_debug=P: xiaomi/sm6150

4.19
0008-Graphene-Kernel_Hardening/4.19/0093.patch:Subject: [PATCH] mm: add support for verifying page sanitization
0008-Graphene-Kernel_Hardening/4.19/0094.patch:Subject: [PATCH] slub: Extend init_on_free to slab caches with constructors
0008-Graphene-Kernel_Hardening/4.19/0095.patch:Subject: [PATCH] slub: Add support for verifying slab sanitization
0008-Graphene-Kernel_Hardening/4.19/0096.patch:Subject: [PATCH] slub: Extend init_on_alloc to slab caches with constructors
NEEDS slub_debug=P: oneplus/sm7250