{"api_version":"1","generated_at":"2026-08-22T08:06:14+00:00","cve":"CVE-2024-56368","urls":{"html":"https://cve.report/CVE-2024-56368","api":"https://cve.report/api/cve/CVE-2024-56368.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2024-56368","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-56368"},"summary":{"title":"ring-buffer: Fix overflow in __rb_map_vma","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix overflow in __rb_map_vma\n\nAn overflow occurred when performing the following calculation:\n\n   nr_pages = ((nr_subbufs + 1) << subbuf_order) - pgoff;\n\nAdd a check before the calculation to avoid this problem.\n\nsyzbot reported this as a slab-out-of-bounds in __rb_map_vma:\n\nBUG: KASAN: slab-out-of-bounds in __rb_map_vma+0x9ab/0xae0 kernel/trace/ring_buffer.c:7058\nRead of size 8 at addr ffff8880767dd2b8 by task syz-executor187/5836\n\nCPU: 0 UID: 0 PID: 5836 Comm: syz-executor187 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xc3/0x620 mm/kasan/report.c:489\n kasan_report+0xd9/0x110 mm/kasan/report.c:602\n __rb_map_vma+0x9ab/0xae0 kernel/trace/ring_buffer.c:7058\n ring_buffer_map+0x56e/0x9b0 kernel/trace/ring_buffer.c:7138\n tracing_buffers_mmap+0xa6/0x120 kernel/trace/trace.c:8482\n call_mmap include/linux/fs.h:2183 [inline]\n mmap_file mm/internal.h:124 [inline]\n __mmap_new_file_vma mm/vma.c:2291 [inline]\n __mmap_new_vma mm/vma.c:2355 [inline]\n __mmap_region+0x1786/0x2670 mm/vma.c:2456\n mmap_region+0x127/0x320 mm/mmap.c:1348\n do_mmap+0xc00/0xfc0 mm/mmap.c:496\n vm_mmap_pgoff+0x1ba/0x360 mm/util.c:580\n ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542\n __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]\n __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]\n __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe reproducer for this bug is:\n\n------------------------8<-------------------------\n #include <fcntl.h>\n #include <stdlib.h>\n #include <unistd.h>\n #include <asm/types.h>\n #include <sys/mman.h>\n\n int main(int argc, char **argv)\n {\n\tint page_size = getpagesize();\n\tint fd;\n\tvoid *meta;\n\n\tsystem(\"echo 1 > /sys/kernel/tracing/buffer_size_kb\");\n\tfd = open(\"/sys/kernel/tracing/per_cpu/cpu0/trace_pipe_raw\", O_RDONLY);\n\n\tmeta = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, page_size * 5);\n }\n------------------------>8-------------------------","state":"PUBLISHED","assigner":"Linux","published_at":"2025-01-11 13:15:28","updated_at":"2026-08-04 11:22:08"},"problem_types":["CWE-190"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"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"}},{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/c58a812c8e49ad688f94f4b050ad5c5b388fc5d2","name":"https://git.kernel.org/stable/c/c58a812c8e49ad688f94f4b050ad5c5b388fc5d2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ec12f30fe54234dd40ffee50dda8d2df10bd0871","name":"https://git.kernel.org/stable/c/ec12f30fe54234dd40ffee50dda8d2df10bd0871","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-56368","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56368","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 117c39200d9d760cbd5944bb89efb7b9c51965aa ec12f30fe54234dd40ffee50dda8d2df10bd0871 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 117c39200d9d760cbd5944bb89efb7b9c51965aa c58a812c8e49ad688f94f4b050ad5c5b388fc5d2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.7 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.13 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2024","cve_id":"56368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2024","cve_id":"56368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"6.13","cpe7":"rc1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2024","cve_id":"56368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"6.13","cpe7":"rc2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2024","cve_id":"56368","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"6.13","cpe7":"rc3","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2024","cve_id":"56368","cve":"CVE-2024-56368","epss":"0.001820000","percentile":"0.079480000","score_date":"2026-08-06","updated_at":"2026-08-07 00:14:20"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/trace/ring_buffer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ec12f30fe54234dd40ffee50dda8d2df10bd0871","status":"affected","version":"117c39200d9d760cbd5944bb89efb7b9c51965aa","versionType":"git"},{"lessThan":"c58a812c8e49ad688f94f4b050ad5c5b388fc5d2","status":"affected","version":"117c39200d9d760cbd5944bb89efb7b9c51965aa","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/trace/ring_buffer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.13","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.7","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.13","versionStartIncluding":"6.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix overflow in __rb_map_vma\n\nAn overflow occurred when performing the following calculation:\n\n   nr_pages = ((nr_subbufs + 1) << subbuf_order) - pgoff;\n\nAdd a check before the calculation to avoid this problem.\n\nsyzbot reported this as a slab-out-of-bounds in __rb_map_vma:\n\nBUG: KASAN: slab-out-of-bounds in __rb_map_vma+0x9ab/0xae0 kernel/trace/ring_buffer.c:7058\nRead of size 8 at addr ffff8880767dd2b8 by task syz-executor187/5836\n\nCPU: 0 UID: 0 PID: 5836 Comm: syz-executor187 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xc3/0x620 mm/kasan/report.c:489\n kasan_report+0xd9/0x110 mm/kasan/report.c:602\n __rb_map_vma+0x9ab/0xae0 kernel/trace/ring_buffer.c:7058\n ring_buffer_map+0x56e/0x9b0 kernel/trace/ring_buffer.c:7138\n tracing_buffers_mmap+0xa6/0x120 kernel/trace/trace.c:8482\n call_mmap include/linux/fs.h:2183 [inline]\n mmap_file mm/internal.h:124 [inline]\n __mmap_new_file_vma mm/vma.c:2291 [inline]\n __mmap_new_vma mm/vma.c:2355 [inline]\n __mmap_region+0x1786/0x2670 mm/vma.c:2456\n mmap_region+0x127/0x320 mm/mmap.c:1348\n do_mmap+0xc00/0xfc0 mm/mmap.c:496\n vm_mmap_pgoff+0x1ba/0x360 mm/util.c:580\n ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542\n __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]\n __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]\n __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe reproducer for this bug is:\n\n------------------------8<-------------------------\n #include <fcntl.h>\n #include <stdlib.h>\n #include <unistd.h>\n #include <asm/types.h>\n #include <sys/mman.h>\n\n int main(int argc, char **argv)\n {\n\tint page_size = getpagesize();\n\tint fd;\n\tvoid *meta;\n\n\tsystem(\"echo 1 > /sys/kernel/tracing/buffer_size_kb\");\n\tfd = open(\"/sys/kernel/tracing/per_cpu/cpu0/trace_pipe_raw\", O_RDONLY);\n\n\tmeta = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, page_size * 5);\n }\n------------------------>8-------------------------"}],"metrics":[{"cvssV3_1":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:38:14.453Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ec12f30fe54234dd40ffee50dda8d2df10bd0871"},{"url":"https://git.kernel.org/stable/c/c58a812c8e49ad688f94f4b050ad5c5b388fc5d2"}],"title":"ring-buffer: Fix overflow in __rb_map_vma","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2024-56368","datePublished":"2025-01-11T12:35:45.719Z","dateReserved":"2025-01-09T09:49:29.671Z","dateUpdated":"2026-08-04T09:38:14.453Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-01-11 13:15:28","lastModifiedDate":"2026-08-04 11:22:08","problem_types":["CWE-190"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.2},{"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}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.12.7","matchCriteriaId":"DCCD8BD3-5C46-4941-B3DF-2AA3E532D3D6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*","matchCriteriaId":"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*","matchCriteriaId":"5A073481-106D-4B15-B4C7-FB0213B8E1D4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*","matchCriteriaId":"DE491969-75AE-4A6B-9A58-8FC5AF98798F"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2024","CveId":"56368","Ordinal":"1","Title":"ring-buffer: Fix overflow in __rb_map_vma","CVE":"CVE-2024-56368","Year":"2024"},"notes":[{"CveYear":"2024","CveId":"56368","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix overflow in __rb_map_vma\n\nAn overflow occurred when performing the following calculation:\n\n   nr_pages = ((nr_subbufs + 1) << subbuf_order) - pgoff;\n\nAdd a check before the calculation to avoid this problem.\n\nsyzbot reported this as a slab-out-of-bounds in __rb_map_vma:\n\nBUG: KASAN: slab-out-of-bounds in __rb_map_vma+0x9ab/0xae0 kernel/trace/ring_buffer.c:7058\nRead of size 8 at addr ffff8880767dd2b8 by task syz-executor187/5836\n\nCPU: 0 UID: 0 PID: 5836 Comm: syz-executor187 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xc3/0x620 mm/kasan/report.c:489\n kasan_report+0xd9/0x110 mm/kasan/report.c:602\n __rb_map_vma+0x9ab/0xae0 kernel/trace/ring_buffer.c:7058\n ring_buffer_map+0x56e/0x9b0 kernel/trace/ring_buffer.c:7138\n tracing_buffers_mmap+0xa6/0x120 kernel/trace/trace.c:8482\n call_mmap include/linux/fs.h:2183 [inline]\n mmap_file mm/internal.h:124 [inline]\n __mmap_new_file_vma mm/vma.c:2291 [inline]\n __mmap_new_vma mm/vma.c:2355 [inline]\n __mmap_region+0x1786/0x2670 mm/vma.c:2456\n mmap_region+0x127/0x320 mm/mmap.c:1348\n do_mmap+0xc00/0xfc0 mm/mmap.c:496\n vm_mmap_pgoff+0x1ba/0x360 mm/util.c:580\n ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542\n __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]\n __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]\n __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe reproducer for this bug is:\n\n------------------------8<-------------------------\n #include <fcntl.h>\n #include <stdlib.h>\n #include <unistd.h>\n #include <asm/types.h>\n #include <sys/mman.h>\n\n int main(int argc, char **argv)\n {\n\tint page_size = getpagesize();\n\tint fd;\n\tvoid *meta;\n\n\tsystem(\"echo 1 > /sys/kernel/tracing/buffer_size_kb\");\n\tfd = open(\"/sys/kernel/tracing/per_cpu/cpu0/trace_pipe_raw\", O_RDONLY);\n\n\tmeta = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, page_size * 5);\n }\n------------------------>8-------------------------","Type":"Description","Title":"ring-buffer: Fix overflow in __rb_map_vma"}]}}}