| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "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" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2022-49341", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
