CVE-2026-80627

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80627", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.775Z", "datePublished": "2026-08-28T06:48:44.777Z", "dateUpdated": "2026-08-28T06:48:44.777Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-28T06:48:44.777Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: mm: Fix out-of-bounds write in maar_res_walk()\n\nmaar_res_walk() uses wi->num_cfg as the index into the fixed-size\nwi->cfg array, but checks whether the array is full only after it has\nfilled the selected entry. If walk_system_ram_range() reports more than\n16 memory ranges, the overflow call writes one struct maar_config past\nthe end of the array before WARN_ON() prevents num_cfg from advancing.\n\nMove the full-array check before taking the array slot and return non-zero\nwhen the scratch array is full, so walk_system_ram_range() terminates the\nwalk instead of invoking the callback for further ranges."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/mips/mm/init.c"], "versions": [{"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "a594100e147a6a67eb29189170f1df3645cda12b", "status": "affected", "versionType": "git"}, {"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "8b3e0c1c63015deaf084286899f5b2d0526715de", "status": "affected", "versionType": "git"}, {"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "44c1d902cf0798b60762a7a98be992b9f5ded7dd", "status": "affected", "versionType": "git"}, {"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "ac7385af1dca86a5ea704c80ca4dc822083ff9e2", "status": "affected", "versionType": "git"}, {"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "431812eb88c200bc3ec33b88782c8cc415842074", "status": "affected", "versionType": "git"}, {"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "92f38fe85198ace9b211bc7712b7951acfb94560", "status": "affected", "versionType": "git"}, {"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "038f068cced8e9c49e8c419f3112d909ad366a3a", "status": "affected", "versionType": "git"}, {"version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "lessThan": "1b001b16bc88f3f7817e228acfd91ee01bdcfcce", "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/mips/mm/init.c"], "versions": [{"version": "5.4", "status": "affected"}, {"version": "0", "lessThan": "5.4", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.4", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b"}, {"url": "https://git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de"}, {"url": "https://git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd"}, {"url": "https://git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2"}, {"url": "https://git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074"}, {"url": "https://git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560"}, {"url": "https://git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a"}, {"url": "https://git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce"}], "title": "MIPS: mm: Fix out-of-bounds write in maar_res_walk()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/mips/mm/init.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a594100e147a6a67eb29189170f1df3645cda12b", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}, {"lessThan": "8b3e0c1c63015deaf084286899f5b2d0526715de", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}, {"lessThan": "44c1d902cf0798b60762a7a98be992b9f5ded7dd", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}, {"lessThan": "ac7385af1dca86a5ea704c80ca4dc822083ff9e2", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}, {"lessThan": "431812eb88c200bc3ec33b88782c8cc415842074", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}, {"lessThan": "92f38fe85198ace9b211bc7712b7951acfb94560", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}, {"lessThan": "038f068cced8e9c49e8c419f3112d909ad366a3a", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}, {"lessThan": "1b001b16bc88f3f7817e228acfd91ee01bdcfcce", "status": "affected", "version": "a5718fe8f70f33b1b5b47a153057cfdd19684598", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/mips/mm/init.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.4"}, {"lessThan": "5.4", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: mm: Fix out-of-bounds write in maar_res_walk()\n\nmaar_res_walk() uses wi->num_cfg as the index into the fixed-size\nwi->cfg array, but checks whether the array is full only after it has\nfilled the selected entry. If walk_system_ram_range() reports more than\n16 memory ranges, the overflow call writes one struct maar_config past\nthe end of the array before WARN_ON() prevents num_cfg from advancing.\n\nMove the full-array check before taking the array slot and return non-zero\nwhen the scratch array is full, so walk_system_ram_range() terminates the\nwalk instead of invoking the callback for further ranges."}], "id": "CVE-2026-80627", "lastModified": "2026-08-28T08:16:46.867", "metrics": {}, "published": "2026-08-28T08:16:46.867", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: MIPS: mm: Fix out-of-bounds write in maar_res_walk()", "id": "2525491", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525491"}, "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"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nMIPS: mm: Fix out-of-bounds write in maar_res_walk()\nmaar_res_walk() uses wi->num_cfg as the index into the fixed-size\nwi->cfg array, but checks whether the array is full only after it has\nfilled the selected entry. If walk_system_ram_range() reports more than\n16 memory ranges, the overflow call writes one struct maar_config past\nthe end of the array before WARN_ON() prevents num_cfg from advancing.\nMove the full-array check before taking the array slot and return non-zero\nwhen the scratch array is full, so walk_system_ram_range() terminates the\nwalk instead of invoking the callback for further ranges.", "A flaw was found in the Linux kernel, specifically within the MIPS architecture's memory management component. The `maar_res_walk()` function performs an out-of-bounds write when processing memory ranges. This occurs because the function fails to check if its internal array is full before writing new data, potentially leading to memory corruption if more than 16 memory ranges are reported. A local attacker could exploit this vulnerability to cause system instability or a denial of service (DoS)."], "name": "CVE-2026-80627", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80627\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80627\nhttps://lore.kernel.org/linux-cve-announce/2026082838-CVE-2026-80627-1634@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,a594100e147a6a67eb29189170f1df3645cda12b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,8b3e0c1c63015deaf084286899f5b2d0526715de)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,44c1d902cf0798b60762a7a98be992b9f5ded7dd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,ac7385af1dca86a5ea704c80ca4dc822083ff9e2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,431812eb88c200bc3ec33b88782c8cc415842074)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,92f38fe85198ace9b211bc7712b7951acfb94560)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,038f068cced8e9c49e8c419f3112d909ad366a3a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5718fe8f70f33b1b5b47a153057cfdd19684598,1b001b16bc88f3f7817e228acfd91ee01bdcfcce)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-28T09:30:18.290970+00:00", "updated": "2026-09-01T17:45:07.117634+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-787"]}