{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-49341", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.541Z", "datePublished": "2025-02-26T02:10:58.118Z", "dateUpdated": "2026-05-11T18:57:49.472Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:57:49.472Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, arm64: Clear prog->jited_len along prog->jited\n\nsyzbot reported an illegal copy_to_user() attempt\nfrom bpf_prog_get_info_by_fd() [1]\n\nThere was no repro yet on this bug, but I think\nthat commit 0aef499f3172 (\"mm/usercopy: Detect vmalloc overruns\")\nis exposing a prior bug in bpf arm64.\n\nbpf_prog_get_info_by_fd() looks at prog->jited_len\nto determine if the JIT image can be copied out to user space.\n\nMy theory is that syzbot managed to get a prog where prog->jited_len\nhas been set to 43, while prog->bpf_func has ben cleared.\n\nIt is not clear why copy_to_user(uinsns, NULL, ulen) is triggering\nthis particular warning.\n\nI thought find_vma_area(NULL) would not find a vm_struct.\nAs we do not hold vmap_area_lock spinlock, it might be possible\nthat the found vm_struct was garbage.\n\n[1]\nusercopy: Kernel memory exposure attempt detected from vmalloc (offset 792633534417210172, size 43)!\nkernel BUG at mm/usercopy.c:101!\nInternal error: Oops - BUG: 0 [#1] PREEMPT SMP\nModules linked in:\nCPU: 0 PID: 25002 Comm: syz-executor.1 Not tainted 5.18.0-syzkaller-10139-g8291eaafed36 #0\nHardware name: linux,dummy-virt (DT)\npstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : usercopy_abort+0x90/0x94 mm/usercopy.c:101\nlr : usercopy_abort+0x90/0x94 mm/usercopy.c:89\nsp : ffff80000b773a20\nx29: ffff80000b773a30 x28: faff80000b745000 x27: ffff80000b773b48\nx26: 0000000000000000 x25: 000000000000002b x24: 0000000000000000\nx23: 00000000000000e0 x22: ffff80000b75db67 x21: 0000000000000001\nx20: 000000000000002b x19: ffff80000b75db3c x18: 00000000fffffffd\nx17: 2820636f6c6c616d x16: 76206d6f72662064 x15: 6574636574656420\nx14: 74706d6574746120 x13: 2129333420657a69 x12: 73202c3237313031\nx11: 3237313434333533 x10: 3336323937207465 x9 : 657275736f707865\nx8 : ffff80000a30c550 x7 : ffff80000b773830 x6 : ffff80000b773830\nx5 : 0000000000000000 x4 : ffff00007fbbaa10 x3 : 0000000000000000\nx2 : 0000000000000000 x1 : f7ff000028fc0000 x0 : 0000000000000064\nCall trace:\n usercopy_abort+0x90/0x94 mm/usercopy.c:89\n check_heap_object mm/usercopy.c:186 [inline]\n __check_object_size mm/usercopy.c:252 [inline]\n __check_object_size+0x198/0x36c mm/usercopy.c:214\n check_object_size include/linux/thread_info.h:199 [inline]\n check_copy_size include/linux/thread_info.h:235 [inline]\n copy_to_user include/linux/uaccess.h:159 [inline]\n bpf_prog_get_info_by_fd.isra.0+0xf14/0xfdc kernel/bpf/syscall.c:3993\n bpf_obj_get_info_by_fd+0x12c/0x510 kernel/bpf/syscall.c:4253\n __sys_bpf+0x900/0x2150 kernel/bpf/syscall.c:4956\n __do_sys_bpf kernel/bpf/syscall.c:5021 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:5019 [inline]\n __arm64_sys_bpf+0x28/0x40 kernel/bpf/syscall.c:5019\n __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]\n invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52\n el0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142\n do_el0_svc+0xa0/0xc0 arch/arm64/kernel/syscall.c:206\n el0_svc+0x44/0xb0 arch/arm64/kernel/entry-common.c:624\n el0t_64_sync_handler+0x1ac/0x1b0 arch/arm64/kernel/entry-common.c:642\n el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:581\nCode: aa0003e3 d00038c0 91248000 97fff65f (d4210000)"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/net/bpf_jit_comp.c"], "versions": [{"version": "db496944fdaaf2a67d2f60529f5dc23abf809506", "lessThan": "aaf61a312af63e1cfe2264c4c5b8cd4ea3626025", "status": "affected", "versionType": "git"}, {"version": "db496944fdaaf2a67d2f60529f5dc23abf809506", "lessThan": "e412b3d178ea4bf746f6b8ee086761613704c6be", "status": "affected", "versionType": "git"}, {"version": "db496944fdaaf2a67d2f60529f5dc23abf809506", "lessThan": "0cf7aaff290cdc4d7cee683d4a18138b0dacac48", "status": "affected", "versionType": "git"}, {"version": "db496944fdaaf2a67d2f60529f5dc23abf809506", "lessThan": "3f4d5e727aeaa610688d46c9f101f78b7f712583", "status": "affected", "versionType": "git"}, {"version": "db496944fdaaf2a67d2f60529f5dc23abf809506", "lessThan": "5c25a3040bc0486c41a7b63a1fb0de7cdb846ad7", "status": "affected", "versionType": "git"}, {"version": "db496944fdaaf2a67d2f60529f5dc23abf809506", "lessThan": "41f7c4f85d402043687e863627a1a84fa867c62d", "status": "affected", "versionType": "git"}, {"version": "db496944fdaaf2a67d2f60529f5dc23abf809506", "lessThan": "10f3b29c65bb2fe0d47c2945cd0b4087be1c5218", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/net/bpf_jit_comp.c"], "versions": [{"version": "4.16", "status": "affected"}, {"version": "0", "lessThan": "4.16", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.247", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.198", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.122", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.47", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.15", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.4", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "4.19.247"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.4.198"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.10.122"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.15.47"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.17.15"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.18.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/aaf61a312af63e1cfe2264c4c5b8cd4ea3626025"}, {"url": "https://git.kernel.org/stable/c/e412b3d178ea4bf746f6b8ee086761613704c6be"}, {"url": "https://git.kernel.org/stable/c/0cf7aaff290cdc4d7cee683d4a18138b0dacac48"}, {"url": "https://git.kernel.org/stable/c/3f4d5e727aeaa610688d46c9f101f78b7f712583"}, {"url": "https://git.kernel.org/stable/c/5c25a3040bc0486c41a7b63a1fb0de7cdb846ad7"}, {"url": "https://git.kernel.org/stable/c/41f7c4f85d402043687e863627a1a84fa867c62d"}, {"url": "https://git.kernel.org/stable/c/10f3b29c65bb2fe0d47c2945cd0b4087be1c5218"}], "title": "bpf, arm64: Clear prog->jited_len along prog->jited", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "669C3AF7-C77C-4A01-ABBF-9771B5BC5F88", "versionEndExcluding": "4.19.247", "versionStartIncluding": "4.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3EC49633-14DE-4EBD-BB80-76AE2E3EABB9", "versionEndExcluding": "5.4.198", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1B42AA01-44D8-4572-95E6-FF8E374CF9C5", "versionEndExcluding": "5.10.122", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FC042EE3-4864-4325-BE0B-4BCDBF11AA61", "versionEndExcluding": "5.15.47", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "53E7AA2E-2FB4-45CA-A22B-08B4EDBB51AD", "versionEndExcluding": "5.17.15", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FA6D643C-6D6A-4821-8A8D-B5776B8F0103", "versionEndExcluding": "5.18.4", "versionStartIncluding": "5.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*", "matchCriteriaId": "A8C30C2D-F82D-4D37-AB48-D76ABFBD5377", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, arm64: Clear prog->jited_len along prog->jited\n\nsyzbot reported an illegal copy_to_user() attempt\nfrom bpf_prog_get_info_by_fd() [1]\n\nThere was no repro yet on this bug, but I think\nthat commit 0aef499f3172 (\"mm/usercopy: Detect vmalloc overruns\")\nis exposing a prior bug in bpf arm64.\n\nbpf_prog_get_info_by_fd() looks at prog->jited_len\nto determine if the JIT image can be copied out to user space.\n\nMy theory is that syzbot managed to get a prog where prog->jited_len\nhas been set to 43, while prog->bpf_func has ben cleared.\n\nIt is not clear why copy_to_user(uinsns, NULL, ulen) is triggering\nthis particular warning.\n\nI thought find_vma_area(NULL) would not find a vm_struct.\nAs we do not hold vmap_area_lock spinlock, it might be possible\nthat the found vm_struct was garbage.\n\n[1]\nusercopy: Kernel memory exposure attempt detected from vmalloc (offset 792633534417210172, size 43)!\nkernel BUG at mm/usercopy.c:101!\nInternal error: Oops - BUG: 0 [#1] PREEMPT SMP\nModules linked in:\nCPU: 0 PID: 25002 Comm: syz-executor.1 Not tainted 5.18.0-syzkaller-10139-g8291eaafed36 #0\nHardware name: linux,dummy-virt (DT)\npstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : usercopy_abort+0x90/0x94 mm/usercopy.c:101\nlr : usercopy_abort+0x90/0x94 mm/usercopy.c:89\nsp : ffff80000b773a20\nx29: ffff80000b773a30 x28: faff80000b745000 x27: ffff80000b773b48\nx26: 0000000000000000 x25: 000000000000002b x24: 0000000000000000\nx23: 00000000000000e0 x22: ffff80000b75db67 x21: 0000000000000001\nx20: 000000000000002b x19: ffff80000b75db3c x18: 00000000fffffffd\nx17: 2820636f6c6c616d x16: 76206d6f72662064 x15: 6574636574656420\nx14: 74706d6574746120 x13: 2129333420657a69 x12: 73202c3237313031\nx11: 3237313434333533 x10: 3336323937207465 x9 : 657275736f707865\nx8 : ffff80000a30c550 x7 : ffff80000b773830 x6 : ffff80000b773830\nx5 : 0000000000000000 x4 : ffff00007fbbaa10 x3 : 0000000000000000\nx2 : 0000000000000000 x1 : f7ff000028fc0000 x0 : 0000000000000064\nCall trace:\n usercopy_abort+0x90/0x94 mm/usercopy.c:89\n check_heap_object mm/usercopy.c:186 [inline]\n __check_object_size mm/usercopy.c:252 [inline]\n __check_object_size+0x198/0x36c mm/usercopy.c:214\n check_object_size include/linux/thread_info.h:199 [inline]\n check_copy_size include/linux/thread_info.h:235 [inline]\n copy_to_user include/linux/uaccess.h:159 [inline]\n bpf_prog_get_info_by_fd.isra.0+0xf14/0xfdc kernel/bpf/syscall.c:3993\n bpf_obj_get_info_by_fd+0x12c/0x510 kernel/bpf/syscall.c:4253\n __sys_bpf+0x900/0x2150 kernel/bpf/syscall.c:4956\n __do_sys_bpf kernel/bpf/syscall.c:5021 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:5019 [inline]\n __arm64_sys_bpf+0x28/0x40 kernel/bpf/syscall.c:5019\n __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]\n invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52\n el0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142\n do_el0_svc+0xa0/0xc0 arch/arm64/kernel/syscall.c:206\n el0_svc+0x44/0xb0 arch/arm64/kernel/entry-common.c:624\n el0t_64_sync_handler+0x1ac/0x1b0 arch/arm64/kernel/entry-common.c:642\n el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:581\nCode: aa0003e3 d00038c0 91248000 97fff65f (d4210000)"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf, arm64: Borrar prog->jited_len junto con prog->jited syzbot inform\u00f3 un intento ilegal de copy_to_user() desde bpf_prog_get_info_by_fd() [1] Todav\u00eda no hubo reproducci\u00f3n de este error, pero creo que el commit 0aef499f3172 (\"mm/usercopy: Detectar desbordamientos de vmalloc\") est\u00e1 exponiendo un error anterior en bpf arm64. bpf_prog_get_info_by_fd() analiza prog->jited_len para determinar si la imagen JIT se puede copiar al espacio de usuario. Mi teor\u00eda es que syzbot logr\u00f3 obtener un programa donde prog->jited_len se ha establecido en 43, mientras que prog->bpf_func se ha borrado. No est\u00e1 claro por qu\u00e9 copy_to_user(uinsns, NULL, ulen) est\u00e1 activando esta advertencia en particular. Pens\u00e9 que find_vma_area(NULL) no encontrar\u00eda un vm_struct. Como no tenemos el bloqueo de giro vmap_area_lock, es posible que el vm_struct encontrado fuera basura. [1] usercopy: \u00a1Se detect\u00f3 un intento de exposici\u00f3n de memoria del kernel desde vmalloc (desplazamiento 792633534417210172, tama\u00f1o 43)! \u00a1ERROR del kernel en mm/usercopy.c:101! Error interno: Oops - BUG: 0 [#1] PREEMPT M\u00f3dulos SMP vinculados en: CPU: 0 PID: 25002 Comm: syz-executor.1 No contaminado 5.18.0-syzkaller-10139-g8291eaafed36 #0 Nombre del hardware: linux,dummy-virt (DT) pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : usercopy_abort+0x90/0x94 mm/usercopy.c:101 lr : usercopy_abort+0x90/0x94 mm/usercopy.c:89 sp : ffff80000b773a20 x29: ffff80000b773a30 x28: faff80000b745000 x27: ffff80000b773b48 x26: 0000000000000000 x25: 000000000000002b x24: 00000000000000000 x23: 00000000000000e0 x22: ffff80000b75db67 x21: 0000000000000001 x20: 000000000000002b x19: ffff80000b75db3c x18: 00000000fffffffd x17: 2820636f6c6c616d x16: 76206d6f72662064 x15: 6574636574656420 x14: 74706d6574746120 x13: 2129333420657a69 x12: 73202c3237313031 x11: 3237313434333533 x10: 3336323937207465 x9: 657275736f707865 x8: ffff80000a30c550 x7: ffff80000b773830 x6: ffff80000b773830 x5: 0000000000000000 x4 : ffff00007fbbaa10 x3 : 0000000000000000 x2 : 0000000000000000 x1 : f7ff000028fc0000 x0 : 00000000000000064 Rastreo de llamadas: usercopy_abort+0x90/0x94 mm/usercopy.c:89 check_heap_object mm/usercopy.c:186 [en l\u00ednea] __check_object_size mm/usercopy.c:252 [en l\u00ednea] __check_object_size+0x198/0x36c mm/usercopy.c:214 check_object_size include/linux/thread_info.h:199 [en l\u00ednea] check_copy_size include/linux/thread_info.h:235 [en l\u00ednea] copia_al_usuario include/linux/uaccess.h:159 [en l\u00ednea] bpf_prog_get_info_by_fd.isra.0+0xf14/0xfdc kernel/bpf/syscall.c:3993 bpf_obj_get_info_by_fd+0x12c/0x510 kernel/bpf/syscall.c:4253 __sys_bpf+0x900/0x2150 kernel/bpf/syscall.c:4956 __do_sys_bpf kernel/bpf/syscall.c:5021 [en l\u00ednea] __se_sys_bpf kernel/bpf/syscall.c:5019 [en l\u00ednea] __arm64_sys_bpf+0x28/0x40 kernel/bpf/syscall.c:5019 __invoke_syscall arch/arm64/kernel/syscall.c:38 [en l\u00ednea] invocar_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52 el0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142 do_el0_svc+0xa0/0xc0 arch/arm64/kernel/syscall.c:206 el0_svc+0x44/0xb0 arch/arm64/kernel/entry-common.c:624 el0t_64_sync_handler+0x1ac/0x1b0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:581 C\u00f3digo: aa0003e3 d00038c0 91248000 97fff65f (d4210000)"}], "id": "CVE-2022-49341", "lastModified": "2025-10-21T12:18:14.827", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-26T07:01:10.857", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0cf7aaff290cdc4d7cee683d4a18138b0dacac48"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/10f3b29c65bb2fe0d47c2945cd0b4087be1c5218"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3f4d5e727aeaa610688d46c9f101f78b7f712583"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/41f7c4f85d402043687e863627a1a84fa867c62d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5c25a3040bc0486c41a7b63a1fb0de7cdb846ad7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aaf61a312af63e1cfe2264c4c5b8cd4ea3626025"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e412b3d178ea4bf746f6b8ee086761613704c6be"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: bpf, arm64: Clear prog->jited_len along prog->jited", "id": "2347863", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347863"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf, arm64: Clear prog->jited_len along prog->jited\nsyzbot reported an illegal copy_to_user() attempt\nfrom bpf_prog_get_info_by_fd() [1]\nThere was no repro yet on this bug, but I think\nthat commit 0aef499f3172 (\"mm/usercopy: Detect vmalloc overruns\")\nis exposing a prior bug in bpf arm64.\nbpf_prog_get_info_by_fd() looks at prog->jited_len\nto determine if the JIT image can be copied out to user space.\nMy theory is that syzbot managed to get a prog where prog->jited_len\nhas been set to 43, while prog->bpf_func has ben cleared.\nIt is not clear why copy_to_user(uinsns, NULL, ulen) is triggering\nthis particular warning.\nI thought find_vma_area(NULL) would not find a vm_struct.\nAs we do not hold vmap_area_lock spinlock, it might be possible\nthat the found vm_struct was garbage.\n[1]\nusercopy: Kernel memory exposure attempt detected from vmalloc (offset 792633534417210172, size 43)!\nkernel BUG at mm/usercopy.c:101!\nInternal error: Oops - BUG: 0 [#1] PREEMPT SMP\nModules linked in:\nCPU: 0 PID: 25002 Comm: syz-executor.1 Not tainted 5.18.0-syzkaller-10139-g8291eaafed36 #0\nHardware name: linux,dummy-virt (DT)\npstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : usercopy_abort+0x90/0x94 mm/usercopy.c:101\nlr : usercopy_abort+0x90/0x94 mm/usercopy.c:89\nsp : ffff80000b773a20\nx29: ffff80000b773a30 x28: faff80000b745000 x27: ffff80000b773b48\nx26: 0000000000000000 x25: 000000000000002b x24: 0000000000000000\nx23: 00000000000000e0 x22: ffff80000b75db67 x21: 0000000000000001\nx20: 000000000000002b x19: ffff80000b75db3c x18: 00000000fffffffd\nx17: 2820636f6c6c616d x16: 76206d6f72662064 x15: 6574636574656420\nx14: 74706d6574746120 x13: 2129333420657a69 x12: 73202c3237313031\nx11: 3237313434333533 x10: 3336323937207465 x9 : 657275736f707865\nx8 : ffff80000a30c550 x7 : ffff80000b773830 x6 : ffff80000b773830\nx5 : 0000000000000000 x4 : ffff00007fbbaa10 x3 : 0000000000000000\nx2 : 0000000000000000 x1 : f7ff000028fc0000 x0 : 0000000000000064\nCall trace:\nusercopy_abort+0x90/0x94 mm/usercopy.c:89\ncheck_heap_object mm/usercopy.c:186 [inline]\n__check_object_size mm/usercopy.c:252 [inline]\n__check_object_size+0x198/0x36c mm/usercopy.c:214\ncheck_object_size include/linux/thread_info.h:199 [inline]\ncheck_copy_size include/linux/thread_info.h:235 [inline]\ncopy_to_user include/linux/uaccess.h:159 [inline]\nbpf_prog_get_info_by_fd.isra.0+0xf14/0xfdc kernel/bpf/syscall.c:3993\nbpf_obj_get_info_by_fd+0x12c/0x510 kernel/bpf/syscall.c:4253\n__sys_bpf+0x900/0x2150 kernel/bpf/syscall.c:4956\n__do_sys_bpf kernel/bpf/syscall.c:5021 [inline]\n__se_sys_bpf kernel/bpf/syscall.c:5019 [inline]\n__arm64_sys_bpf+0x28/0x40 kernel/bpf/syscall.c:5019\n__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]\ninvoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52\nel0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142\ndo_el0_svc+0xa0/0xc0 arch/arm64/kernel/syscall.c:206\nel0_svc+0x44/0xb0 arch/arm64/kernel/entry-common.c:624\nel0t_64_sync_handler+0x1ac/0x1b0 arch/arm64/kernel/entry-common.c:642\nel0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:581\nCode: aa0003e3 d00038c0 91248000 97fff65f (d4210000)"], "name": "CVE-2022-49341", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49341\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49341\nhttps://lore.kernel.org/linux-cve-announce/2025022641-CVE-2022-49341-b0e9@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T23:06:20.309480+00:00", "updated": "2025-07-12T23:06:20.309532+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}