{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-52983", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-03-27T16:40:15.740Z", "datePublished": "2025-03-27T16:43:21.372Z", "dateUpdated": "2026-05-11T19:36:22.378Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:36:22.378Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock, bfq: fix uaf for bfqq in bic_set_bfqq()\n\nAfter commit 64dc8c732f5c (\"block, bfq: fix possible uaf for 'bfqq->bic'\"),\nbic->bfqq will be accessed in bic_set_bfqq(), however, in some context\nbic->bfqq will be freed, and bic_set_bfqq() is called with the freed\nbic->bfqq.\n\nFix the problem by always freeing bfqq after bic_set_bfqq()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/bfq-cgroup.c", "block/bfq-iosched.c"], "versions": [{"version": "5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a", "lessThan": "7f77f3dab5066a7c9da73d72d1eee895ff84a8d5", "status": "affected", "versionType": "git"}, {"version": "094f3d9314d67691cb21ba091c1b528f6e3c4893", "lessThan": "511c922c5bf6c8a166bea826e702336bc2424140", "status": "affected", "versionType": "git"}, {"version": "761564d93c8265f65543acf0a576b32d66bfa26a", "lessThan": "cb1876fc33af26d00efdd473311f1b664c77c44e", "status": "affected", "versionType": "git"}, {"version": "64dc8c732f5c2b406cc752e6aaa1bd5471159cab", "lessThan": "b600de2d7d3a16f9007fad1bdae82a3951a26af2", "status": "affected", "versionType": "git"}, {"version": "b22fd72bfebda3956efc4431b60ddfc0a51e03e0", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/bfq-cgroup.c", "block/bfq-iosched.c"], "versions": [{"version": "5.15.86", "lessThan": "5.15.93", "status": "affected", "versionType": "semver"}, {"version": "6.1.2", "lessThan": "6.1.11", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.86", "versionEndExcluding": "5.15.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.2", "versionEndExcluding": "6.1.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5"}, {"url": "https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140"}, {"url": "https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e"}, {"url": "https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2"}], "title": "block, bfq: fix uaf for bfqq in bic_set_bfqq()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2023-52983", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-03-27T16:59:42.552227Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-27T17:08:22.246Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "21081389-6ED8-4898-80ED-81EF6A2B1FEC", "versionEndExcluding": "5.15.93", "versionStartIncluding": "5.15.86", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6AACE63B-510D-430C-ACD9-34922D790040", "versionEndExcluding": "6.1.11", "versionStartIncluding": "6.1.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0.16:*:*:*:*:*:*:*", "matchCriteriaId": "0F12ACFA-7194-43FD-B79A-93AEA2668E6F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock, bfq: fix uaf for bfqq in bic_set_bfqq()\n\nAfter commit 64dc8c732f5c (\"block, bfq: fix possible uaf for 'bfqq->bic'\"),\nbic->bfqq will be accessed in bic_set_bfqq(), however, in some context\nbic->bfqq will be freed, and bic_set_bfqq() is called with the freed\nbic->bfqq.\n\nFix the problem by always freeing bfqq after bic_set_bfqq()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: block, bfq: correcci\u00f3n de uaf para bfqq en bic_set_bfqq(). Despu\u00e9s del commit 64dc8c732f5c (\"block, bfq: correcci\u00f3n de posible uaf para 'bfqq->bic'\"), se acceder\u00e1 a bic->bfqq en bic_set_bfqq(). Sin embargo, en algunos contextos, se liberar\u00e1 bic->bfqq y se llamar\u00e1 a bic_set_bfqq() con el bic->bfqq liberado. Para solucionar el problema, libere siempre bfqq despu\u00e9s de bic_set_bfqq()."}], "id": "CVE-2023-52983", "lastModified": "2025-04-01T15:39:39.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-03-27T17:15:45.557", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: block, bfq: fix uaf for bfqq in bic_set_bfqq()", "id": "2355445", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2355445"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nblock, bfq: fix uaf for bfqq in bic_set_bfqq()\nAfter commit 64dc8c732f5c (\"block, bfq: fix possible uaf for 'bfqq->bic'\"),\nbic->bfqq will be accessed in bic_set_bfqq(), however, in some context\nbic->bfqq will be freed, and bic_set_bfqq() is called with the freed\nbic->bfqq.\nFix the problem by always freeing bfqq after bic_set_bfqq()."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent module bfq from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically."}, "name": "CVE-2023-52983", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "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": "2025-03-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52983\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52983\nhttps://lore.kernel.org/linux-cve-announce/2025032706-CVE-2023-52983-4a16@gregkh/T"], "statement": "Red Hat Enterprise Linux (all versions) not affected, because the part of the source code that contains the bug not introduced yet.", "threat_severity": "Moderate"}

{}