{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53021", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.379Z", "datePublished": "2026-06-24T16:29:30.671Z", "dateUpdated": "2026-06-24T16:29:30.671Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:30.671Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Fix integer overflow in UNMAP bounds check\n\nsbc_execute_unmap() checks LBA + range does not exceed the device capacity,\nbut does not guard against LBA + range wrapping around on 64-bit overflow.\n\nAdd an overflow check matching the pattern already used for WRITE_SAME in\nthe same file."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/target/target_core_sbc.c"], "versions": [{"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "c08ab702c4699c6efb9d60bdb15b73e7a627ee7e", "status": "affected", "versionType": "git"}, {"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "2e1ed9a7b6ea5bfefb5d80a02b1c71c7dee1f0dd", "status": "affected", "versionType": "git"}, {"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "5efc3ef4758f8d98c257419fa21daca3227de61a", "status": "affected", "versionType": "git"}, {"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "d7aef29573c7c5cdb2dfad939253287a6329c2a4", "status": "affected", "versionType": "git"}, {"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "3facdecc3fcf115cc4f9b3d8f118d6705e2456a8", "status": "affected", "versionType": "git"}, {"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "51075df70c46e60a9773f2dcd28299e40dac36fb", "status": "affected", "versionType": "git"}, {"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "02115986d027ade793e7f6be87e91d6a796d0aa3", "status": "affected", "versionType": "git"}, {"version": "86d7182985d25900929adce14fffd729cc8c6fb8", "lessThan": "2bf2d65f76697820dbc4227d13866293576dd90a", "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/target/target_core_sbc.c"], "versions": [{"version": "3.10", "status": "affected"}, {"version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "3.10", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c08ab702c4699c6efb9d60bdb15b73e7a627ee7e"}, {"url": "https://git.kernel.org/stable/c/2e1ed9a7b6ea5bfefb5d80a02b1c71c7dee1f0dd"}, {"url": "https://git.kernel.org/stable/c/5efc3ef4758f8d98c257419fa21daca3227de61a"}, {"url": "https://git.kernel.org/stable/c/d7aef29573c7c5cdb2dfad939253287a6329c2a4"}, {"url": "https://git.kernel.org/stable/c/3facdecc3fcf115cc4f9b3d8f118d6705e2456a8"}, {"url": "https://git.kernel.org/stable/c/51075df70c46e60a9773f2dcd28299e40dac36fb"}, {"url": "https://git.kernel.org/stable/c/02115986d027ade793e7f6be87e91d6a796d0aa3"}, {"url": "https://git.kernel.org/stable/c/2bf2d65f76697820dbc4227d13866293576dd90a"}], "title": "scsi: target: core: Fix integer overflow in UNMAP bounds check", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: scsi: target: core: Fix integer overflow in UNMAP bounds check", "id": "2492325", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492325"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: target: core: Fix integer overflow in UNMAP bounds check\nsbc_execute_unmap() checks LBA + range does not exceed the device capacity,\nbut does not guard against LBA + range wrapping around on 64-bit overflow.\nAdd an overflow check matching the pattern already used for WRITE_SAME in\nthe same file.", "A flaw was found in the Linux kernel's SCSI target core. The `sbc_execute_unmap()` function, which handles UNMAP operations, is vulnerable to an integer overflow. This vulnerability occurs because the bounds check for the Logical Block Address (LBA) and range does not prevent a 64-bit overflow. An attacker could potentially exploit this to cause a denial of service (DoS) or trigger unintended memory access."], "name": "CVE-2026-53021", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53021\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53021\nhttps://lore.kernel.org/linux-cve-announce/2026062452-CVE-2026-53021-44ab@gregkh/T"], "threat_severity": "Moderate"}