{"api_version":"1","generated_at":"2026-08-28T14:56:41+00:00","cve":"CVE-2026-80592","urls":{"html":"https://cve.report/CVE-2026-80592","api":"https://cve.report/api/cve/CVE-2026-80592.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80592","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80592"},"summary":{"title":"samples/damon/mtier: fail early if address range parameters are invalid","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsamples/damon/mtier: fail early if address range parameters are invalid\n\nThe comment on top of `struct damon_region` clearly says that\n\n    For any use case, @ar should be non-zero positive size.\n\nwhich is now verified in damon_verify_new_region() if the kernel is built\nwith DAMON_DEBUG_SANITY.\n\nThe WARN_ONCE() can be triggered if the mtier sample module is enabled\nbefore node{0,1}_{start,end}_addr have been properly initialized, which is\nobviously not good.\n\n ------------[ cut here ]------------\n start 0 >= end 0\n WARNING: mm/damon/core.c:217 at damon_new_region+0xf4/0x118, CPU#59: bash/341468\n Call trace:\n  damon_new_region+0xf4/0x118 (P)\n  damon_set_regions+0xfc/0x3c0\n  damon_sample_mtier_build_ctx+0xe8/0x3a8\n  damon_sample_mtier_start+0x1c/0x90\n  damon_sample_mtier_enable_store+0x98/0xb0\n  param_attr_store+0xb4/0x128\n  module_attr_store+0x2c/0x50\n  sysfs_kf_write+0x58/0x90\n  kernfs_fop_write_iter+0x16c/0x238\n  vfs_write+0x2c0/0x370\n  ksys_write+0x74/0x118\n  __arm64_sys_write+0x24/0x38\n  invoke_syscall+0xa8/0x118\n  el0_svc_common.constprop.0+0x48/0xf0\n  do_el0_svc+0x24/0x38\n  el0_svc+0x54/0x370\n  el0t_64_sync_handler+0xa0/0xe8\n  el0t_64_sync+0x1ac/0x1b0\n ---[ end trace 0000000000000000 ]---\n\nNote that the same issue can happen if detect_node_addresses is true, and\nnode 0 or 1 is memoryless.  Fix it together by checking the validity of\nparameters right before damon_new_region() and fail early if they're\ninvalid.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:42","updated_at":"2026-08-28 08:16:42"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7746d72c64054976887928d64d2caf25c5a6dcc0","name":"https://git.kernel.org/stable/c/7746d72c64054976887928d64d2caf25c5a6dcc0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9d360fb820a3b9576d155e720ec44fef54d2efb5","name":"https://git.kernel.org/stable/c/9d360fb820a3b9576d155e720ec44fef54d2efb5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/db20589d7b248211f63f4a7f642a49c0832b13ae","name":"https://git.kernel.org/stable/c/db20589d7b248211f63f4a7f642a49c0832b13ae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80592","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80592","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 82a08bde3cf7bbbe90de57baa181bebf676582c7 9d360fb820a3b9576d155e720ec44fef54d2efb5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 82a08bde3cf7bbbe90de57baa181bebf676582c7 db20589d7b248211f63f4a7f642a49c0832b13ae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 82a08bde3cf7bbbe90de57baa181bebf676582c7 7746d72c64054976887928d64d2caf25c5a6dcc0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["samples/damon/mtier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9d360fb820a3b9576d155e720ec44fef54d2efb5","status":"affected","version":"82a08bde3cf7bbbe90de57baa181bebf676582c7","versionType":"git"},{"lessThan":"db20589d7b248211f63f4a7f642a49c0832b13ae","status":"affected","version":"82a08bde3cf7bbbe90de57baa181bebf676582c7","versionType":"git"},{"lessThan":"7746d72c64054976887928d64d2caf25c5a6dcc0","status":"affected","version":"82a08bde3cf7bbbe90de57baa181bebf676582c7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["samples/damon/mtier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsamples/damon/mtier: fail early if address range parameters are invalid\n\nThe comment on top of `struct damon_region` clearly says that\n\n    For any use case, @ar should be non-zero positive size.\n\nwhich is now verified in damon_verify_new_region() if the kernel is built\nwith DAMON_DEBUG_SANITY.\n\nThe WARN_ONCE() can be triggered if the mtier sample module is enabled\nbefore node{0,1}_{start,end}_addr have been properly initialized, which is\nobviously not good.\n\n ------------[ cut here ]------------\n start 0 >= end 0\n WARNING: mm/damon/core.c:217 at damon_new_region+0xf4/0x118, CPU#59: bash/341468\n Call trace:\n  damon_new_region+0xf4/0x118 (P)\n  damon_set_regions+0xfc/0x3c0\n  damon_sample_mtier_build_ctx+0xe8/0x3a8\n  damon_sample_mtier_start+0x1c/0x90\n  damon_sample_mtier_enable_store+0x98/0xb0\n  param_attr_store+0xb4/0x128\n  module_attr_store+0x2c/0x50\n  sysfs_kf_write+0x58/0x90\n  kernfs_fop_write_iter+0x16c/0x238\n  vfs_write+0x2c0/0x370\n  ksys_write+0x74/0x118\n  __arm64_sys_write+0x24/0x38\n  invoke_syscall+0xa8/0x118\n  el0_svc_common.constprop.0+0x48/0xf0\n  do_el0_svc+0x24/0x38\n  el0_svc+0x54/0x370\n  el0t_64_sync_handler+0xa0/0xe8\n  el0t_64_sync+0x1ac/0x1b0\n ---[ end trace 0000000000000000 ]---\n\nNote that the same issue can happen if detect_node_addresses is true, and\nnode 0 or 1 is memoryless.  Fix it together by checking the validity of\nparameters right before damon_new_region() and fail early if they're\ninvalid."}],"providerMetadata":{"dateUpdated":"2026-08-28T06:48:20.218Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9d360fb820a3b9576d155e720ec44fef54d2efb5"},{"url":"https://git.kernel.org/stable/c/db20589d7b248211f63f4a7f642a49c0832b13ae"},{"url":"https://git.kernel.org/stable/c/7746d72c64054976887928d64d2caf25c5a6dcc0"}],"title":"samples/damon/mtier: fail early if address range parameters are invalid","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80592","datePublished":"2026-08-28T06:48:20.218Z","dateReserved":"2026-08-26T14:34:25.770Z","dateUpdated":"2026-08-28T06:48:20.218Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-28 08:16:42","lastModifiedDate":"2026-08-28 08:16:42","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80592","Ordinal":"1","Title":"samples/damon/mtier: fail early if address range parameters are ","CVE":"CVE-2026-80592","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80592","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nsamples/damon/mtier: fail early if address range parameters are invalid\n\nThe comment on top of `struct damon_region` clearly says that\n\n    For any use case, @ar should be non-zero positive size.\n\nwhich is now verified in damon_verify_new_region() if the kernel is built\nwith DAMON_DEBUG_SANITY.\n\nThe WARN_ONCE() can be triggered if the mtier sample module is enabled\nbefore node{0,1}_{start,end}_addr have been properly initialized, which is\nobviously not good.\n\n ------------[ cut here ]------------\n start 0 >= end 0\n WARNING: mm/damon/core.c:217 at damon_new_region+0xf4/0x118, CPU#59: bash/341468\n Call trace:\n  damon_new_region+0xf4/0x118 (P)\n  damon_set_regions+0xfc/0x3c0\n  damon_sample_mtier_build_ctx+0xe8/0x3a8\n  damon_sample_mtier_start+0x1c/0x90\n  damon_sample_mtier_enable_store+0x98/0xb0\n  param_attr_store+0xb4/0x128\n  module_attr_store+0x2c/0x50\n  sysfs_kf_write+0x58/0x90\n  kernfs_fop_write_iter+0x16c/0x238\n  vfs_write+0x2c0/0x370\n  ksys_write+0x74/0x118\n  __arm64_sys_write+0x24/0x38\n  invoke_syscall+0xa8/0x118\n  el0_svc_common.constprop.0+0x48/0xf0\n  do_el0_svc+0x24/0x38\n  el0_svc+0x54/0x370\n  el0t_64_sync_handler+0xa0/0xe8\n  el0t_64_sync+0x1ac/0x1b0\n ---[ end trace 0000000000000000 ]---\n\nNote that the same issue can happen if detect_node_addresses is true, and\nnode 0 or 1 is memoryless.  Fix it together by checking the validity of\nparameters right before damon_new_region() and fail early if they're\ninvalid.","Type":"Description","Title":"samples/damon/mtier: fail early if address range parameters are "}]}}}