{"api_version":"1","generated_at":"2026-08-28T16:59:04+00:00","cve":"CVE-2026-80627","urls":{"html":"https://cve.report/CVE-2026-80627","api":"https://cve.report/api/cve/CVE-2026-80627.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80627","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80627"},"summary":{"title":"MIPS: mm: Fix out-of-bounds write in maar_res_walk()","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:46","updated_at":"2026-08-28 08:16:46"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce","name":"https://git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de","name":"https://git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560","name":"https://git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b","name":"https://git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2","name":"https://git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd","name":"https://git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074","name":"https://git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a","name":"https://git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80627","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80627","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a5718fe8f70f33b1b5b47a153057cfdd19684598 a594100e147a6a67eb29189170f1df3645cda12b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a5718fe8f70f33b1b5b47a153057cfdd19684598 8b3e0c1c63015deaf084286899f5b2d0526715de git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a5718fe8f70f33b1b5b47a153057cfdd19684598 44c1d902cf0798b60762a7a98be992b9f5ded7dd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a5718fe8f70f33b1b5b47a153057cfdd19684598 ac7385af1dca86a5ea704c80ca4dc822083ff9e2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* 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":["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"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"5.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-08-28T06:48:44.777Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80627","datePublished":"2026-08-28T06:48:44.777Z","dateReserved":"2026-08-26T14:34:25.775Z","dateUpdated":"2026-08-28T06:48:44.777Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-28 08:16:46","lastModifiedDate":"2026-08-28 08:16:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80627","Ordinal":"1","Title":"MIPS: mm: Fix out-of-bounds write in maar_res_walk()","CVE":"CVE-2026-80627","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80627","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"MIPS: mm: Fix out-of-bounds write in maar_res_walk()"}]}}}