{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72223", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.913Z", "datePublished": "2026-08-15T05:54:16.019Z", "dateUpdated": "2026-08-17T05:10:38.658Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:10:38.658Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm/btt: Free arena sub-allocations on discover_arenas() error path\n\nMemory allocated by btt_freelist_init(), btt_rtt_init(), and\nbtt_maplocks_init() is not freed on some discover_arenas() error\npaths. This leaks memory when arena discovery fails.\n\nAdd the missing kfree() calls to release the allocations before\nreturning an error.\n\n[ as: commit message and log edits ]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvdimm/btt.c"], "versions": [{"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "2d0364937550a7b3e2592629c2a68753ac020b28", "status": "affected", "versionType": "git"}, {"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "eeb95774bc79268e2b78ebf01d8781560b5bd671", "status": "affected", "versionType": "git"}, {"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "7563f69caa9143a491d5f26e563255c734751545", "status": "affected", "versionType": "git"}, {"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "0b0d9404951aacc9717aa61e77af4a6e9e8f8249", "status": "affected", "versionType": "git"}, {"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "873ced7f345e99f7ee16f9ff226515580332ecc4", "status": "affected", "versionType": "git"}, {"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5", "status": "affected", "versionType": "git"}, {"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "ba59b96d8d21dc8729fca44a022ca5919c1848c9", "status": "affected", "versionType": "git"}, {"version": "5212e11fde4d40fa627668b4f2222d20db488f71", "lessThan": "13fe4cd9ddd0aacb7777812328be525a11ea3fea", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvdimm/btt.c"], "versions": [{"version": "4.2", "status": "affected"}, {"version": "0", "lessThan": "4.2", "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": "4.2", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2d0364937550a7b3e2592629c2a68753ac020b28"}, {"url": "https://git.kernel.org/stable/c/eeb95774bc79268e2b78ebf01d8781560b5bd671"}, {"url": "https://git.kernel.org/stable/c/7563f69caa9143a491d5f26e563255c734751545"}, {"url": "https://git.kernel.org/stable/c/0b0d9404951aacc9717aa61e77af4a6e9e8f8249"}, {"url": "https://git.kernel.org/stable/c/873ced7f345e99f7ee16f9ff226515580332ecc4"}, {"url": "https://git.kernel.org/stable/c/30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5"}, {"url": "https://git.kernel.org/stable/c/ba59b96d8d21dc8729fca44a022ca5919c1848c9"}, {"url": "https://git.kernel.org/stable/c/13fe4cd9ddd0aacb7777812328be525a11ea3fea"}], "title": "nvdimm/btt: Free arena sub-allocations on discover_arenas() error path", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nvdimm/btt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2d0364937550a7b3e2592629c2a68753ac020b28", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}, {"lessThan": "eeb95774bc79268e2b78ebf01d8781560b5bd671", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}, {"lessThan": "7563f69caa9143a491d5f26e563255c734751545", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}, {"lessThan": "0b0d9404951aacc9717aa61e77af4a6e9e8f8249", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}, {"lessThan": "873ced7f345e99f7ee16f9ff226515580332ecc4", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}, {"lessThan": "30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}, {"lessThan": "ba59b96d8d21dc8729fca44a022ca5919c1848c9", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}, {"lessThan": "13fe4cd9ddd0aacb7777812328be525a11ea3fea", "status": "affected", "version": "5212e11fde4d40fa627668b4f2222d20db488f71", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nvdimm/btt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.2"}, {"lessThan": "4.2", "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\nnvdimm/btt: Free arena sub-allocations on discover_arenas() error path\n\nMemory allocated by btt_freelist_init(), btt_rtt_init(), and\nbtt_maplocks_init() is not freed on some discover_arenas() error\npaths. This leaks memory when arena discovery fails.\n\nAdd the missing kfree() calls to release the allocations before\nreturning an error.\n\n[ as: commit message and log edits ]"}], "id": "CVE-2026-72223", "lastModified": "2026-08-17T06:18:23.437", "metrics": {}, "published": "2026-08-15T06:21:41.233", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b0d9404951aacc9717aa61e77af4a6e9e8f8249"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/13fe4cd9ddd0aacb7777812328be525a11ea3fea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2d0364937550a7b3e2592629c2a68753ac020b28"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/30d490bb2c4cd220e7dedf862ab6a09eb5dcbad5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7563f69caa9143a491d5f26e563255c734751545"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/873ced7f345e99f7ee16f9ff226515580332ecc4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba59b96d8d21dc8729fca44a022ca5919c1848c9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eeb95774bc79268e2b78ebf01d8781560b5bd671"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path", "id": "2516594", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516594"}, "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-772", "details": ["A flaw was found in the Linux kernel's nvdimm/btt module. This vulnerability occurs when the `discover_arenas()` function encounters an error, failing to properly deallocate memory. Specifically, memory allocated by sub-functions like `btt_freelist_init()` is not released, leading to a memory leak. This can result in system instability or denial of service over time due to resource exhaustion."], "name": "CVE-2026-72223", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72223\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72223\nhttps://lore.kernel.org/linux-cve-announce/2026081547-CVE-2026-72223-9d84@gregkh/T"], "threat_severity": "Low"}

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