{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-53273", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-16T08:09:37.989Z", "datePublished": "2025-09-16T08:11:08.792Z", "dateUpdated": "2025-09-16T08:11:08.792Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-16T08:11:08.792Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nDrivers: vmbus: Check for channel allocation before looking up relids\n\nrelid2channel() assumes vmbus channel array to be allocated when called.\nHowever, in cases such as kdump/kexec, not all relids will be reset by the host.\nWhen the second kernel boots and if the guest receives a vmbus interrupt during\nvmbus driver initialization before vmbus_connect() is called, before it finishes,\nor if it fails, the vmbus interrupt service routine is called which in turn calls\nrelid2channel() and can cause a null pointer dereference.\n\nPrint a warning and error out in relid2channel() for a channel id that's invalid\nin the second kernel."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hv/connection.c"], "versions": [{"version": "8b6a877c060ed6b86878fe66c7c6493a6054cf23", "lessThan": "176c6b4889195fbe7016d9401175b48c5c9edf68", "status": "affected", "versionType": "git"}, {"version": "8b6a877c060ed6b86878fe66c7c6493a6054cf23", "lessThan": "c373e49fbb87aa177819866ed9194ebc5414dfd6", "status": "affected", "versionType": "git"}, {"version": "8b6a877c060ed6b86878fe66c7c6493a6054cf23", "lessThan": "8c3f0ae5435fd20bb1e3a8308488aa6ac33151ee", "status": "affected", "versionType": "git"}, {"version": "8b6a877c060ed6b86878fe66c7c6493a6054cf23", "lessThan": "a5c44f3446a0565139b7d8abc78f58b86c398123", "status": "affected", "versionType": "git"}, {"version": "8b6a877c060ed6b86878fe66c7c6493a6054cf23", "lessThan": "1eb65c8687316c65140b48fad27133d583178e15", "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/hv/connection.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.178", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.107", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.24", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.11", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "5.8", "versionEndExcluding": "5.10.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.107"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/176c6b4889195fbe7016d9401175b48c5c9edf68"}, {"url": "https://git.kernel.org/stable/c/c373e49fbb87aa177819866ed9194ebc5414dfd6"}, {"url": "https://git.kernel.org/stable/c/8c3f0ae5435fd20bb1e3a8308488aa6ac33151ee"}, {"url": "https://git.kernel.org/stable/c/a5c44f3446a0565139b7d8abc78f58b86c398123"}, {"url": "https://git.kernel.org/stable/c/1eb65c8687316c65140b48fad27133d583178e15"}], "title": "Drivers: vmbus: Check for channel allocation before looking up relids", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: Drivers: vmbus: Check for channel allocation before looking up relids", "id": "2395699", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395699"}, "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": ["No description is available for this CVE."], "name": "CVE-2023-53273", "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": "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": "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": "2025-09-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53273\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53273\nhttps://lore.kernel.org/linux-cve-announce/2025091622-CVE-2023-53273-b873@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-17T10:05:01.586382+00:00", "updated": "2025-09-17T10:05:01.586417+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}