CVE-2026-80592 (GCVE-0-2026-80592)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:48 – Updated: 2026-08-28 06:48
VLAI
Title
samples/damon/mtier: fail early if address range parameters are invalid
Summary
In the Linux kernel, the following vulnerability has been resolved: samples/damon/mtier: fail early if address range parameters are invalid The comment on top of `struct damon_region` clearly says that For any use case, @ar should be non-zero positive size. which is now verified in damon_verify_new_region() if the kernel is built with DAMON_DEBUG_SANITY. The WARN_ONCE() can be triggered if the mtier sample module is enabled before node{0,1}_{start,end}_addr have been properly initialized, which is obviously not good. ------------[ cut here ]------------ start 0 >= end 0 WARNING: mm/damon/core.c:217 at damon_new_region+0xf4/0x118, CPU#59: bash/341468 Call trace: damon_new_region+0xf4/0x118 (P) damon_set_regions+0xfc/0x3c0 damon_sample_mtier_build_ctx+0xe8/0x3a8 damon_sample_mtier_start+0x1c/0x90 damon_sample_mtier_enable_store+0x98/0xb0 param_attr_store+0xb4/0x128 module_attr_store+0x2c/0x50 sysfs_kf_write+0x58/0x90 kernfs_fop_write_iter+0x16c/0x238 vfs_write+0x2c0/0x370 ksys_write+0x74/0x118 __arm64_sys_write+0x24/0x38 invoke_syscall+0xa8/0x118 el0_svc_common.constprop.0+0x48/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x54/0x370 el0t_64_sync_handler+0xa0/0xe8 el0t_64_sync+0x1ac/0x1b0 ---[ end trace 0000000000000000 ]--- Note that the same issue can happen if detect_node_addresses is true, and node 0 or 1 is memoryless. Fix it together by checking the validity of parameters right before damon_new_region() and fail early if they're invalid.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 82a08bde3cf7bbbe90de57baa181bebf676582c7 , < 9d360fb820a3b9576d155e720ec44fef54d2efb5 (git)
Affected: 82a08bde3cf7bbbe90de57baa181bebf676582c7 , < db20589d7b248211f63f4a7f642a49c0832b13ae (git)
Affected: 82a08bde3cf7bbbe90de57baa181bebf676582c7 , < 7746d72c64054976887928d64d2caf25c5a6dcc0 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "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 \u003e= 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\u0027re\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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80592",
      "date": "2026-09-01",
      "epss": "0.00166",
      "percentile": "0.06089"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80592\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-28T08:16:42.830\",\"lastModified\":\"2026-08-28T08:16:42.830\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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 \u003e= 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\u0027re\\ninvalid.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"samples/damon/mtier.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"82a08bde3cf7bbbe90de57baa181bebf676582c7\",\"lessThan\":\"9d360fb820a3b9576d155e720ec44fef54d2efb5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"82a08bde3cf7bbbe90de57baa181bebf676582c7\",\"lessThan\":\"db20589d7b248211f63f4a7f642a49c0832b13ae\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"82a08bde3cf7bbbe90de57baa181bebf676582c7\",\"lessThan\":\"7746d72c64054976887928d64d2caf25c5a6dcc0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"samples/damon/mtier.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/7746d72c64054976887928d64d2caf25c5a6dcc0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9d360fb820a3b9576d155e720ec44fef54d2efb5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/db20589d7b248211f63f4a7f642a49c0832b13ae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-31T09:46:40+00:00",
      "cve": "CVE-2026-80592",
      "id": "CVE-2026-80592",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: samples/damon/mtier: fail early if address range parameters are invalid",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80592.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.