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CVE-2023-52506 (GCVE-0-2023-52506)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:52 – Updated: 2026-08-15 12:23
VLAI
Title
LoongArch: Set all reserved memblocks on Node#0 at initialization
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Set all reserved memblocks on Node#0 at initialization After commit 61167ad5fecdea ("mm: pass nid to reserve_bootmem_region()") we get a panic if DEFERRED_STRUCT_PAGE_INIT is enabled: [ 0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000002b82, era == 90000000040e3f28, ra == 90000000040e3f18 [ 0.000000] Oops[#1]: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0+ #733 [ 0.000000] pc 90000000040e3f28 ra 90000000040e3f18 tp 90000000046f4000 sp 90000000046f7c90 [ 0.000000] a0 0000000000000001 a1 0000000000200000 a2 0000000000000040 a3 90000000046f7ca0 [ 0.000000] a4 90000000046f7ca4 a5 0000000000000000 a6 90000000046f7c38 a7 0000000000000000 [ 0.000000] t0 0000000000000002 t1 9000000004b00ac8 t2 90000000040e3f18 t3 90000000040f0800 [ 0.000000] t4 00000000000f0000 t5 80000000ffffe07e t6 0000000000000003 t7 900000047fff5e20 [ 0.000000] t8 aaaaaaaaaaaaaaab u0 0000000000000018 s9 0000000000000000 s0 fffffefffe000000 [ 0.000000] s1 0000000000000000 s2 0000000000000080 s3 0000000000000040 s4 0000000000000000 [ 0.000000] s5 0000000000000000 s6 fffffefffe000000 s7 900000000470b740 s8 9000000004ad4000 [ 0.000000] ra: 90000000040e3f18 reserve_bootmem_region+0xec/0x21c [ 0.000000] ERA: 90000000040e3f28 reserve_bootmem_region+0xfc/0x21c [ 0.000000] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) [ 0.000000] PRMD: 00000000 (PPLV0 -PIE -PWE) [ 0.000000] EUEN: 00000000 (-FPE -SXE -ASXE -BTE) [ 0.000000] ECFG: 00070800 (LIE=11 VS=7) [ 0.000000] ESTAT: 00010800 [PIL] (IS=11 ECode=1 EsubCode=0) [ 0.000000] BADV: 0000000000002b82 [ 0.000000] PRID: 0014d000 (Loongson-64bit, Loongson-3A6000) [ 0.000000] Modules linked in: [ 0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____)) [ 0.000000] Stack : 0000000000000000 9000000002eb5430 0000003a00000020 90000000045ccd00 [ 0.000000] 900000000470e000 90000000002c1918 0000000000000000 9000000004110780 [ 0.000000] 00000000fe6c0000 0000000480000000 9000000004b4e368 9000000004110748 [ 0.000000] 0000000000000000 900000000421ca84 9000000004620000 9000000004564970 [ 0.000000] 90000000046f7d78 9000000002cc9f70 90000000002c1918 900000000470e000 [ 0.000000] 9000000004564970 90000000040bc0e0 90000000046f7d78 0000000000000000 [ 0.000000] 0000000000004000 90000000045ccd00 0000000000000000 90000000002c1918 [ 0.000000] 90000000002c1900 900000000470b700 9000000004b4df78 9000000004620000 [ 0.000000] 90000000046200a8 90000000046200a8 0000000000000000 9000000004218b2c [ 0.000000] 9000000004270008 0000000000000001 0000000000000000 90000000045ccd00 [ 0.000000] ... [ 0.000000] Call Trace: [ 0.000000] [<90000000040e3f28>] reserve_bootmem_region+0xfc/0x21c [ 0.000000] [<900000000421ca84>] memblock_free_all+0x114/0x350 [ 0.000000] [<9000000004218b2c>] mm_core_init+0x138/0x3cc [ 0.000000] [<9000000004200e38>] start_kernel+0x488/0x7a4 [ 0.000000] [<90000000040df0d8>] kernel_entry+0xd8/0xdc [ 0.000000] [ 0.000000] Code: 02eb21ad 00410f4c 380c31ac <262b818d> 6800b70d 02c1c196 0015001c 57fe4bb1 260002cd The reason is early memblock_reserve() in memblock_init() set node id to MAX_NUMNODES, making NODE_DATA(nid) a NULL dereference in the call chain reserve_bootmem_region() -> init_reserved_page(). After memblock_init(), those late calls of memblock_reserve() operate on subregions of memblock .memory regions. As a result, these reserved regions will be set to the correct node at the first iteration of memmap_init_reserved_pages(). So set all reserved memblocks on Node#0 at initialization can avoid this panic.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-07 20:04 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 61167ad5fecdeaa037f3df1ba354dddd5f66a1ed , < 19878758accf6b2788091a771d9f9fee7bab11ab (git)
Affected: 61167ad5fecdeaa037f3df1ba354dddd5f66a1ed , < b795fb9f5861ee256070d59e33130980a01fadd7 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.5.6 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Set all reserved memblocks on Node#0 at initialization\n\nAfter commit 61167ad5fecdea (\"mm: pass nid to reserve_bootmem_region()\")\nwe get a panic if DEFERRED_STRUCT_PAGE_INIT is enabled:\n\n[    0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000002b82, era == 90000000040e3f28, ra == 90000000040e3f18\n[    0.000000] Oops[#1]:\n[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0+ #733\n[    0.000000] pc 90000000040e3f28 ra 90000000040e3f18 tp 90000000046f4000 sp 90000000046f7c90\n[    0.000000] a0 0000000000000001 a1 0000000000200000 a2 0000000000000040 a3 90000000046f7ca0\n[    0.000000] a4 90000000046f7ca4 a5 0000000000000000 a6 90000000046f7c38 a7 0000000000000000\n[    0.000000] t0 0000000000000002 t1 9000000004b00ac8 t2 90000000040e3f18 t3 90000000040f0800\n[    0.000000] t4 00000000000f0000 t5 80000000ffffe07e t6 0000000000000003 t7 900000047fff5e20\n[    0.000000] t8 aaaaaaaaaaaaaaab u0 0000000000000018 s9 0000000000000000 s0 fffffefffe000000\n[    0.000000] s1 0000000000000000 s2 0000000000000080 s3 0000000000000040 s4 0000000000000000\n[    0.000000] s5 0000000000000000 s6 fffffefffe000000 s7 900000000470b740 s8 9000000004ad4000\n[    0.000000]    ra: 90000000040e3f18 reserve_bootmem_region+0xec/0x21c\n[    0.000000]   ERA: 90000000040e3f28 reserve_bootmem_region+0xfc/0x21c\n[    0.000000]  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)\n[    0.000000]  PRMD: 00000000 (PPLV0 -PIE -PWE)\n[    0.000000]  EUEN: 00000000 (-FPE -SXE -ASXE -BTE)\n[    0.000000]  ECFG: 00070800 (LIE=11 VS=7)\n[    0.000000] ESTAT: 00010800 [PIL] (IS=11 ECode=1 EsubCode=0)\n[    0.000000]  BADV: 0000000000002b82\n[    0.000000]  PRID: 0014d000 (Loongson-64bit, Loongson-3A6000)\n[    0.000000] Modules linked in:\n[    0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____))\n[    0.000000] Stack : 0000000000000000 9000000002eb5430 0000003a00000020 90000000045ccd00\n[    0.000000]         900000000470e000 90000000002c1918 0000000000000000 9000000004110780\n[    0.000000]         00000000fe6c0000 0000000480000000 9000000004b4e368 9000000004110748\n[    0.000000]         0000000000000000 900000000421ca84 9000000004620000 9000000004564970\n[    0.000000]         90000000046f7d78 9000000002cc9f70 90000000002c1918 900000000470e000\n[    0.000000]         9000000004564970 90000000040bc0e0 90000000046f7d78 0000000000000000\n[    0.000000]         0000000000004000 90000000045ccd00 0000000000000000 90000000002c1918\n[    0.000000]         90000000002c1900 900000000470b700 9000000004b4df78 9000000004620000\n[    0.000000]         90000000046200a8 90000000046200a8 0000000000000000 9000000004218b2c\n[    0.000000]         9000000004270008 0000000000000001 0000000000000000 90000000045ccd00\n[    0.000000]         ...\n[    0.000000] Call Trace:\n[    0.000000] [\u003c90000000040e3f28\u003e] reserve_bootmem_region+0xfc/0x21c\n[    0.000000] [\u003c900000000421ca84\u003e] memblock_free_all+0x114/0x350\n[    0.000000] [\u003c9000000004218b2c\u003e] mm_core_init+0x138/0x3cc\n[    0.000000] [\u003c9000000004200e38\u003e] start_kernel+0x488/0x7a4\n[    0.000000] [\u003c90000000040df0d8\u003e] kernel_entry+0xd8/0xdc\n[    0.000000]\n[    0.000000] Code: 02eb21ad  00410f4c  380c31ac \u003c262b818d\u003e 6800b70d  02c1c196  0015001c  57fe4bb1  260002cd\n\nThe reason is early memblock_reserve() in memblock_init() set node id to\nMAX_NUMNODES, making NODE_DATA(nid) a NULL dereference in the call chain\nreserve_bootmem_region() -\u003e init_reserved_page(). After memblock_init(),\nthose late calls of memblock_reserve() operate on subregions of memblock\n.memory regions. As a result, these reserved regions will be set to the\ncorrect node at the first iteration of memmap_init_reserved_pages().\n\nSo set all reserved memblocks on Node#0 at initialization can avoid this\npanic."
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52506\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-02T22:15:47.390\",\"lastModified\":\"2026-08-15T13:17:45.687\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nLoongArch: Set all reserved memblocks on Node#0 at initialization\\n\\nAfter commit 61167ad5fecdea (\\\"mm: pass nid to reserve_bootmem_region()\\\")\\nwe get a panic if DEFERRED_STRUCT_PAGE_INIT is enabled:\\n\\n[    0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000002b82, era == 90000000040e3f28, ra == 90000000040e3f18\\n[    0.000000] Oops[#1]:\\n[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0+ #733\\n[    0.000000] pc 90000000040e3f28 ra 90000000040e3f18 tp 90000000046f4000 sp 90000000046f7c90\\n[    0.000000] a0 0000000000000001 a1 0000000000200000 a2 0000000000000040 a3 90000000046f7ca0\\n[    0.000000] a4 90000000046f7ca4 a5 0000000000000000 a6 90000000046f7c38 a7 0000000000000000\\n[    0.000000] t0 0000000000000002 t1 9000000004b00ac8 t2 90000000040e3f18 t3 90000000040f0800\\n[    0.000000] t4 00000000000f0000 t5 80000000ffffe07e t6 0000000000000003 t7 900000047fff5e20\\n[    0.000000] t8 aaaaaaaaaaaaaaab u0 0000000000000018 s9 0000000000000000 s0 fffffefffe000000\\n[    0.000000] s1 0000000000000000 s2 0000000000000080 s3 0000000000000040 s4 0000000000000000\\n[    0.000000] s5 0000000000000000 s6 fffffefffe000000 s7 900000000470b740 s8 9000000004ad4000\\n[    0.000000]    ra: 90000000040e3f18 reserve_bootmem_region+0xec/0x21c\\n[    0.000000]   ERA: 90000000040e3f28 reserve_bootmem_region+0xfc/0x21c\\n[    0.000000]  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)\\n[    0.000000]  PRMD: 00000000 (PPLV0 -PIE -PWE)\\n[    0.000000]  EUEN: 00000000 (-FPE -SXE -ASXE -BTE)\\n[    0.000000]  ECFG: 00070800 (LIE=11 VS=7)\\n[    0.000000] ESTAT: 00010800 [PIL] (IS=11 ECode=1 EsubCode=0)\\n[    0.000000]  BADV: 0000000000002b82\\n[    0.000000]  PRID: 0014d000 (Loongson-64bit, Loongson-3A6000)\\n[    0.000000] Modules linked in:\\n[    0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____))\\n[    0.000000] Stack : 0000000000000000 9000000002eb5430 0000003a00000020 90000000045ccd00\\n[    0.000000]         900000000470e000 90000000002c1918 0000000000000000 9000000004110780\\n[    0.000000]         00000000fe6c0000 0000000480000000 9000000004b4e368 9000000004110748\\n[    0.000000]         0000000000000000 900000000421ca84 9000000004620000 9000000004564970\\n[    0.000000]         90000000046f7d78 9000000002cc9f70 90000000002c1918 900000000470e000\\n[    0.000000]         9000000004564970 90000000040bc0e0 90000000046f7d78 0000000000000000\\n[    0.000000]         0000000000004000 90000000045ccd00 0000000000000000 90000000002c1918\\n[    0.000000]         90000000002c1900 900000000470b700 9000000004b4df78 9000000004620000\\n[    0.000000]         90000000046200a8 90000000046200a8 0000000000000000 9000000004218b2c\\n[    0.000000]         9000000004270008 0000000000000001 0000000000000000 90000000045ccd00\\n[    0.000000]         ...\\n[    0.000000] Call Trace:\\n[    0.000000] [\u003c90000000040e3f28\u003e] reserve_bootmem_region+0xfc/0x21c\\n[    0.000000] [\u003c900000000421ca84\u003e] memblock_free_all+0x114/0x350\\n[    0.000000] [\u003c9000000004218b2c\u003e] mm_core_init+0x138/0x3cc\\n[    0.000000] [\u003c9000000004200e38\u003e] start_kernel+0x488/0x7a4\\n[    0.000000] [\u003c90000000040df0d8\u003e] kernel_entry+0xd8/0xdc\\n[    0.000000]\\n[    0.000000] Code: 02eb21ad  00410f4c  380c31ac \u003c262b818d\u003e 6800b70d  02c1c196  0015001c  57fe4bb1  260002cd\\n\\nThe reason is early memblock_reserve() in memblock_init() set node id to\\nMAX_NUMNODES, making NODE_DATA(nid) a NULL dereference in the call chain\\nreserve_bootmem_region() -\u003e init_reserved_page(). After memblock_init(),\\nthose late calls of memblock_reserve() operate on subregions of memblock\\n.memory regions. As a result, these reserved regions will be set to the\\ncorrect node at the first iteration of memmap_init_reserved_pages().\\n\\nSo set all reserved memblocks on Node#0 at initialization can avoid this\\npanic.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: LoongArch: establece todos los bloques de memoria reservados en el nodo n.\u00ba 0 durante la inicializaci\u00f3n. Despu\u00e9s de el commit 61167ad5fecdea (\\\"mm: pasa nid a reserve_bootmem_region()\\\"), entra en p\u00e1nico si DEFERRED_STRUCT_PAGE_INIT est\u00e1 habilitado: [0.000000 ] CPU 0 No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual 0000000000002b82, era == 90000000040e3f28, ra == 90000000040e3f18 [ 0.000000] Ups[#1]: [ 0.000000] CPU: 0 PID: 0 Comm: swapper No contaminado 6 .5.0+ #733 [ 0.000000] pc 90000000040e3f28 ra 90000000040e3f18 tp 90000000046f4000 sp 90000000046f7c90 [ 0.000000] a0 0000000000000001 a1 000 0000000200000 a2 0000000000000040 a3 90000000046f7ca0 [ 0.000000] a4 90000000046f7ca4 a5 00000000000000000 a6 90000000046f7c38 a7 00000 00000000000 [ 0,000000] t0 0000000000000002 t1 9000000004b00ac8 t2 90000000040e3f18 t3 90000000040f0800 [ 0,000000] t4 00000000000f0000 t5 80000000ffffe07e t6 0000000000000003 t7 900000047fff5e20 [ 0.000000] t8 aaaaaaaaaaaaaaab u0 0000000000000018 s9 000 0000000000000 s0 fffffffe000000 [ 0.000000] s1 0000000000000000 s2 0000000000000080 s3 00000000000000040 s4 0000000000000000 [ 0.000 000] s5 0000000000000000 s6 fffffffe000000 s7 900000000470b740 s8 9000000004ad4000 [ 0.000000] ra: 90000000040e3f18 reserve_bootmem_region+0xec/ 0x21c [0.000000] ERA: 90000000040e3f28 reserve_bootmem_region+0xfc/0x21c [0.000000] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) [ 0.000000] PRMD: 00000000 ( PPLV0 -PIE -PWE) [ 0,000000 ] EUEN: 00000000 (-FPE -SXE -ASXE -BTE) [ 0.000000] ECFG: 00070800 (LIE=11 VS=7) [ 0.000000] ESTAT: 00010800 [PIL] (IS=11 ECode=1 EssubCode=0) [ 0.000000 ] BADV: 0000000000002b82 [ 0.000000] PRID: 0014d000 (Loongson-64bit, Loongson-3A6000) [ 0.000000] M\u00f3dulos vinculados en: [ 0.000000] Intercambiador de procesos (pid: 0, threadinfo=(____ptrval____), tarea=(____ptrval____ )) [ 0,000000 ] Pila: 0000000000000000 9000000002eb5430 0000003a00000020 90000000045ccd00 [0.000000] 900000000470e000 90000000002c1918 00000000 00000000 9000000004110780 [ 0.000000] 00000000fe6c0000 0000000480000000 9000000004b4e368 9000000004110748 [ 0.000000] 0000000000 000000 900000000421ca84 9000000004620000 9000000004564970 [ 0.000000] 90000000046f7d78 9000000002cc9f70 90000000002c1918 9000000 00470e000 [ 0.000000] 9000000004564970 90000000040bc0e0 90000000046f7d78 00000000000000000 [ 0.000000] 0000000000004000 900000000 45ccd00 0000000000000000 90000000002c1918 [ 0,000000] 90000000002c1900 900000000470b700 9000000004b4df78 9000000004620000 [ 0,000000] 90000000046200a8 90000000046200a8 [ 0.000000] Seguimiento de llamadas: [ 0.000000] [\u0026lt;90000000040e3f28\u0026gt;] reserve_bootmem_region+0xfc/0x21c [ 0.000000] [\u0026lt; 900000000421ca84\u0026gt;] memblock_free_all+0x114/0x350 [ 0.000000] [\u0026lt;9000000004218b2c\u0026gt;] mm_core_init+0x138/0x3cc [ 0.000000] [\u0026lt;9000000004200e38\u0026gt;] start_kernel+0x4 88/0x7a4 [ 0.000000] [\u0026lt;90000000040df0d8\u0026gt;] kernel_entry+0xd8/0xdc [ 0.000000] [0.000000] C\u00f3digo: 02eb21ad 00410f4c 380c31ac \u0026lt;262b818d\u0026gt; 6800b70d 02c1c196 0015001c 57fe4bb1 260002cd El motivo es que memblock_reserve() en memblock_init() estableci\u00f3 la identificaci\u00f3n del nodo en MAX_NUMNODES, haciendo NODE_ DATA(nid) una desreferencia NULL en la cadena de llamadas reserve_bootmem_region() -\u0026gt; init_reserved_page(). Despu\u00e9s de memblock_init(), esas llamadas tard\u00edas de memblock_reserve() operan en subregiones de regiones memblock .memory. Como resultado, estas regiones reservadas se establecer\u00e1n en el nodo correcto en la primera iteraci\u00f3n de memmap_init_reserved_pages(). Por lo tanto, configurar todos los bloques de memoria reservados en el Nodo 0 durante la inicializaci\u00f3n puede evitar este p\u00e1nico.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"arch/loongarch/kernel/mem.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"61167ad5fecdeaa037f3df1ba354dddd5f66a1ed\",\"lessThan\":\"19878758accf6b2788091a771d9f9fee7bab11ab\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"61167ad5fecdeaa037f3df1ba354dddd5f66a1ed\",\"lessThan\":\"b795fb9f5861ee256070d59e33130980a01fadd7\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"arch/loongarch/kernel/mem.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5.6\",\"lessThanOrEqual\":\"6.5.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-03-07T20:04:28.918703Z\",\"id\":\"CVE-2023-52506\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.1.56\",\"matchCriteriaId\":\"9889AA5E-5419-4E5A-8A95-FB5F9494E850\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.5.6\",\"matchCriteriaId\":\"870FC772-173A-4A0F-B1AF-7976AD6057D3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"84267A4F-DBC2-444F-B41D-69E15E1BEC97\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"FB440208-241C-4246-9A83-C1715C0DAA6C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/19878758accf6b2788091a771d9f9fee7bab11ab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b795fb9f5861ee256070d59e33130980a01fadd7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/19878758accf6b2788091a771d9f9fee7bab11ab\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b795fb9f5861ee256070d59e33130980a01fadd7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f105e893a8edd48bdf4bef9fef845a9ff402f737\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:03:29+00:00",
      "cve": "CVE-2023-52506",
      "id": "CVE-2023-52506",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: LoongArch: Set all reserved memblocks on Node#0 at initialization",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52506.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f105e893a8edd48bdf4bef9fef845a9ff402f737\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/19878758accf6b2788091a771d9f9fee7bab11ab\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b795fb9f5861ee256070d59e33130980a01fadd7\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T23:03:20.599Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52506\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-07T20:04:28.918703Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:16.480Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"LoongArch: Set all reserved memblocks on Node#0 at initialization\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"61167ad5fecdeaa037f3df1ba354dddd5f66a1ed\", \"lessThan\": \"19878758accf6b2788091a771d9f9fee7bab11ab\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"61167ad5fecdeaa037f3df1ba354dddd5f66a1ed\", \"lessThan\": \"b795fb9f5861ee256070d59e33130980a01fadd7\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/loongarch/kernel/mem.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.5\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.5\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.5.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.5.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/loongarch/kernel/mem.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/19878758accf6b2788091a771d9f9fee7bab11ab\"}, {\"url\": \"https://git.kernel.org/stable/c/b795fb9f5861ee256070d59e33130980a01fadd7\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nLoongArch: Set all reserved memblocks on Node#0 at initialization\\n\\nAfter commit 61167ad5fecdea (\\\"mm: pass nid to reserve_bootmem_region()\\\")\\nwe get a panic if DEFERRED_STRUCT_PAGE_INIT is enabled:\\n\\n[    0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000002b82, era == 90000000040e3f28, ra == 90000000040e3f18\\n[    0.000000] Oops[#1]:\\n[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0+ #733\\n[    0.000000] pc 90000000040e3f28 ra 90000000040e3f18 tp 90000000046f4000 sp 90000000046f7c90\\n[    0.000000] a0 0000000000000001 a1 0000000000200000 a2 0000000000000040 a3 90000000046f7ca0\\n[    0.000000] a4 90000000046f7ca4 a5 0000000000000000 a6 90000000046f7c38 a7 0000000000000000\\n[    0.000000] t0 0000000000000002 t1 9000000004b00ac8 t2 90000000040e3f18 t3 90000000040f0800\\n[    0.000000] t4 00000000000f0000 t5 80000000ffffe07e t6 0000000000000003 t7 900000047fff5e20\\n[    0.000000] t8 aaaaaaaaaaaaaaab u0 0000000000000018 s9 0000000000000000 s0 fffffefffe000000\\n[    0.000000] s1 0000000000000000 s2 0000000000000080 s3 0000000000000040 s4 0000000000000000\\n[    0.000000] s5 0000000000000000 s6 fffffefffe000000 s7 900000000470b740 s8 9000000004ad4000\\n[    0.000000]    ra: 90000000040e3f18 reserve_bootmem_region+0xec/0x21c\\n[    0.000000]   ERA: 90000000040e3f28 reserve_bootmem_region+0xfc/0x21c\\n[    0.000000]  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)\\n[    0.000000]  PRMD: 00000000 (PPLV0 -PIE -PWE)\\n[    0.000000]  EUEN: 00000000 (-FPE -SXE -ASXE -BTE)\\n[    0.000000]  ECFG: 00070800 (LIE=11 VS=7)\\n[    0.000000] ESTAT: 00010800 [PIL] (IS=11 ECode=1 EsubCode=0)\\n[    0.000000]  BADV: 0000000000002b82\\n[    0.000000]  PRID: 0014d000 (Loongson-64bit, Loongson-3A6000)\\n[    0.000000] Modules linked in:\\n[    0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____))\\n[    0.000000] Stack : 0000000000000000 9000000002eb5430 0000003a00000020 90000000045ccd00\\n[    0.000000]         900000000470e000 90000000002c1918 0000000000000000 9000000004110780\\n[    0.000000]         00000000fe6c0000 0000000480000000 9000000004b4e368 9000000004110748\\n[    0.000000]         0000000000000000 900000000421ca84 9000000004620000 9000000004564970\\n[    0.000000]         90000000046f7d78 9000000002cc9f70 90000000002c1918 900000000470e000\\n[    0.000000]         9000000004564970 90000000040bc0e0 90000000046f7d78 0000000000000000\\n[    0.000000]         0000000000004000 90000000045ccd00 0000000000000000 90000000002c1918\\n[    0.000000]         90000000002c1900 900000000470b700 9000000004b4df78 9000000004620000\\n[    0.000000]         90000000046200a8 90000000046200a8 0000000000000000 9000000004218b2c\\n[    0.000000]         9000000004270008 0000000000000001 0000000000000000 90000000045ccd00\\n[    0.000000]         ...\\n[    0.000000] Call Trace:\\n[    0.000000] [\u003c90000000040e3f28\u003e] reserve_bootmem_region+0xfc/0x21c\\n[    0.000000] [\u003c900000000421ca84\u003e] memblock_free_all+0x114/0x350\\n[    0.000000] [\u003c9000000004218b2c\u003e] mm_core_init+0x138/0x3cc\\n[    0.000000] [\u003c9000000004200e38\u003e] start_kernel+0x488/0x7a4\\n[    0.000000] [\u003c90000000040df0d8\u003e] kernel_entry+0xd8/0xdc\\n[    0.000000]\\n[    0.000000] Code: 02eb21ad  00410f4c  380c31ac \u003c262b818d\u003e 6800b70d  02c1c196  0015001c  57fe4bb1  260002cd\\n\\nThe reason is early memblock_reserve() in memblock_init() set node id to\\nMAX_NUMNODES, making NODE_DATA(nid) a NULL dereference in the call chain\\nreserve_bootmem_region() -\u003e init_reserved_page(). After memblock_init(),\\nthose late calls of memblock_reserve() operate on subregions of memblock\\n.memory regions. As a result, these reserved regions will be set to the\\ncorrect node at the first iteration of memmap_init_reserved_pages().\\n\\nSo set all reserved memblocks on Node#0 at initialization can avoid this\\npanic.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5.6\", \"versionStartIncluding\": \"6.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6\", \"versionStartIncluding\": \"6.5\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-15T12:23:53.085Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52506\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-15T12:23:53.085Z\", \"dateReserved\": \"2024-02-20T12:30:33.314Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-02T21:52:20.064Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.