{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53126", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.386Z", "datePublished": "2026-06-24T16:30:54.594Z", "dateUpdated": "2026-06-24T16:30:54.594Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:30:54.594Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix disk reference leak in blkcg_maybe_throttle_current()\n\nAdd the missing put_disk() on the error path in\nblkcg_maybe_throttle_current(). When blkcg lookup, blkg lookup, or\nblkg_tryget() fails, the function jumps to the out label which only\ncalls rcu_read_unlock() but does not release the disk reference acquired\nby blkcg_schedule_throttle() via get_device(). Since current->throttle_disk\nis already set to NULL before the lookup, blkcg_exit() cannot release\nthis reference either, causing the disk to never be freed.\n\nRestore the reference release that was present as blk_put_queue() in the\noriginal code but was inadvertently dropped during the conversion from\nrequest_queue to gendisk."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/blk-cgroup.c"], "versions": [{"version": "f05837ed73d0c73e950b2d9f2612febb0d3d451e", "lessThan": "4048ed98860d3785645ebbd34f69566a6c7320c3", "status": "affected", "versionType": "git"}, {"version": "f05837ed73d0c73e950b2d9f2612febb0d3d451e", "lessThan": "73a5af059905d171b398c8b2381632ee499948b5", "status": "affected", "versionType": "git"}, {"version": "f05837ed73d0c73e950b2d9f2612febb0d3d451e", "lessThan": "b3e005f16cd98f815429a87aef4c61e9c140779f", "status": "affected", "versionType": "git"}, {"version": "f05837ed73d0c73e950b2d9f2612febb0d3d451e", "lessThan": "000e8454692cab9d1f1b80130e2870e355301d06", "status": "affected", "versionType": "git"}, {"version": "f05837ed73d0c73e950b2d9f2612febb0d3d451e", "lessThan": "23308af722fefed00af5f238024c11710938fba3", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/blk-cgroup.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "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": "6.3", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4048ed98860d3785645ebbd34f69566a6c7320c3"}, {"url": "https://git.kernel.org/stable/c/73a5af059905d171b398c8b2381632ee499948b5"}, {"url": "https://git.kernel.org/stable/c/b3e005f16cd98f815429a87aef4c61e9c140779f"}, {"url": "https://git.kernel.org/stable/c/000e8454692cab9d1f1b80130e2870e355301d06"}, {"url": "https://git.kernel.org/stable/c/23308af722fefed00af5f238024c11710938fba3"}], "title": "blk-cgroup: fix disk reference leak in blkcg_maybe_throttle_current()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: blk-cgroup: fix disk reference leak in blkcg_maybe_throttle_current()", "id": "2492412", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492412"}, "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 `blk-cgroup` component. This vulnerability occurs due to a missing disk reference release on an error path within the `blkcg_maybe_throttle_current()` function. When certain lookups or gets fail, the disk reference acquired is not properly freed. This oversight can lead to resource exhaustion, potentially allowing a local attacker to cause a Denial of Service (DoS) by preventing the disk from being released."], "name": "CVE-2026-53126", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "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": "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": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53126\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53126\nhttps://lore.kernel.org/linux-cve-announce/2026062417-CVE-2026-53126-f288@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f05837ed73d0c73e950b2d9f2612febb0d3d451e,4048ed98860d3785645ebbd34f69566a6c7320c3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f05837ed73d0c73e950b2d9f2612febb0d3d451e,73a5af059905d171b398c8b2381632ee499948b5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f05837ed73d0c73e950b2d9f2612febb0d3d451e,b3e005f16cd98f815429a87aef4c61e9c140779f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f05837ed73d0c73e950b2d9f2612febb0d3d451e,000e8454692cab9d1f1b80130e2870e355301d06)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f05837ed73d0c73e950b2d9f2612febb0d3d451e,23308af722fefed00af5f238024c11710938fba3)"}}], "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": "semver", "value": "6.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.33,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1,*]"}}], "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": "2026-06-24T20:00:10.383989+00:00", "updated": "2026-06-25T03:30:17.639300+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}