CVE-2022-49114

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But ep is still used in the\nfollowing code, which will lead to a use after free.\n\nReturn after the fc_exch_release() call to avoid use after free."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable path processes Fibre Channel BLS frames (BA_ACC/BA_RJT) received over an FC SAN fabric or FCoE (ETH_P_FCOE) L2 segment from a peer on the same fabric/VLAN, which is adjacent-network topology, not Internet-routable IP.\nAC:L - An adjacent peer can induce exchange timeouts (delaying responses) so the host sends ABTS with a pending timer, then deliver a crafted BA_ACC/BA_RJT while that timer is still queued, reliably hitting the cancel-and-release path.\nPR:N - fc_exch_recv and the FCoE/HBA receive path accept frames from fabric peers with no OS credential or capability check; fabric zoning only constrains topology, not authenticated privileges on this code path.\nUI:N - Exploitation is fully driven by attacker-sent FC/FCoE frames against an already-configured initiator; no separate victim action such as mounting a volume or confirming a prompt is required.\nS:U - The use-after-free corrupts host kernel exchange/slab state within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Use-after-free of heap-allocated struct fc_exch lets an attacker reclaim the object and obtain arbitrary kernel-memory read primitives, which per guidance is High confidentiality impact.\nI:H - struct fc_exch embeds callable resp and destructor function pointers invoked from this path, so UAF plus heap spray enables arbitrary write and control-flow hijacking.\nA:H - Use-after-free of the exchange object causes kernel oops/panic even when not fully exploited, which is High availability impact and can be retried by sending further ABTS responses."}]}], "affected": [{"product": "Linux", 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"42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "f581df412bc45c95176e3c808ee2839c05b2ab0c", "status": "affected", "versionType": "git"}, {"version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "87909291762d08fdb60d19069d7a89b5b308d0ef", "status": "affected", "versionType": "git"}, {"version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "412dd8299b02e4410fe77b8396953c1a8dde183a", "status": "affected", "versionType": "git"}, {"version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "271add11994ba1a334859069367e04d2be2ebdd4", "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/scsi/libfc/fc_exch.c"], "versions": [{"version": "2.6.29", "status": "affected"}, {"version": "0", "lessThan": "2.6.29", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.311", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.276", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.238", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.189", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.111", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.34", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.20", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.3", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": 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"https://git.kernel.org/stable/c/412dd8299b02e4410fe77b8396953c1a8dde183a"}, {"url": "https://git.kernel.org/stable/c/271add11994ba1a334859069367e04d2be2ebdd4"}], "title": "scsi: libfc: Fix use after free in fc_exch_abts_resp()", "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-2022-49114", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-03-04T18:03:27.178498Z"}}}], "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": "2025-03-04T18:07:17.816Z"}}]}}

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fabric zoning only constrains topology, not authenticated privileges on this code path.\nUI:N - Exploitation is fully driven by attacker-sent FC/FCoE frames against an already-configured initiator; no separate victim action such as mounting a volume or confirming a prompt is required.\nS:U - The use-after-free corrupts host kernel exchange/slab state within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Use-after-free of heap-allocated struct fc_exch lets an attacker reclaim the object and obtain arbitrary kernel-memory read primitives, which per guidance is High confidentiality impact.\nI:H - struct fc_exch embeds callable resp and destructor function pointers invoked from this path, so UAF plus heap spray enables arbitrary write and control-flow hijacking.\nA:H - Use-after-free of the exchange object causes kernel oops/panic even when not fully exploited, which is High availability impact and can be retried by sending further ABTS responses."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "4a131d4ea8b581ac9b01d3a72754db4848be3232", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "499d198494e77b6533251b9b909baf5c101129cb", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "6044ad64f41c87382cfeeca281573d1886d80cbe", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "1d7effe5fff9d28e45e18ac3a564067c7ddfe898", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "f581df412bc45c95176e3c808ee2839c05b2ab0c", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "87909291762d08fdb60d19069d7a89b5b308d0ef", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "412dd8299b02e4410fe77b8396953c1a8dde183a", "versionType": "git"}, {"status": "affected", "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "271add11994ba1a334859069367e04d2be2ebdd4", "versionType": "git"}], "programFiles": ["drivers/scsi/libfc/fc_exch.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.29", "versionType": "semver"}, {"status": "unaffected", "version": "4.9.311", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.276", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.238", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.189", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.111", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.34", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.16.20", "versionType": "semver", "lessThanOrEqual": "5.16.*"}, {"status": "unaffected", "version": "5.17.3", "versionType": "semver", "lessThanOrEqual": "5.17.*"}, {"status": "unaffected", "version": "5.18", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/scsi/libfc/fc_exch.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/4a131d4ea8b581ac9b01d3a72754db4848be3232"}, {"url": "https://git.kernel.org/stable/c/499d198494e77b6533251b9b909baf5c101129cb"}, {"url": "https://git.kernel.org/stable/c/6044ad64f41c87382cfeeca281573d1886d80cbe"}, {"url": "https://git.kernel.org/stable/c/5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836"}, {"url": "https://git.kernel.org/stable/c/1d7effe5fff9d28e45e18ac3a564067c7ddfe898"}, {"url": "https://git.kernel.org/stable/c/f581df412bc45c95176e3c808ee2839c05b2ab0c"}, {"url": "https://git.kernel.org/stable/c/87909291762d08fdb60d19069d7a89b5b308d0ef"}, {"url": "https://git.kernel.org/stable/c/412dd8299b02e4410fe77b8396953c1a8dde183a"}, {"url": "https://git.kernel.org/stable/c/271add11994ba1a334859069367e04d2be2ebdd4"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libfc: Fix use after free in fc_exch_abts_resp()\n\nfc_exch_release(ep) will decrease the ep's reference count. When the\nreference count reaches zero, it is freed. 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When the\nreference count reaches zero, it is freed. But ep is still used in the\nfollowing code, which will lead to a use after free.\n\nReturn after the fc_exch_release() call to avoid use after free."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: libfc: Se corrige el use-after-free en fc_exch_abts_resp() fc_exch_release(ep) reducir\u00e1 el recuento de referencias de ep. Cuando el recuento de referencias llega a cero, se libera. Pero ep todav\u00eda se usa en el siguiente c\u00f3digo, lo que provocar\u00e1 un use-after-free. Regrese despu\u00e9s de la llamada fc_exch_release() para evitar el use-after-free."}], "id": "CVE-2022-49114", "lastModified": "2026-08-04T10:17:35.540", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-49114", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-03-04T18:03:27.178498Z", "version": "2.0.3"}}]}, "published": "2025-02-26T07:00:48.773", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1d7effe5fff9d28e45e18ac3a564067c7ddfe898"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/271add11994ba1a334859069367e04d2be2ebdd4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/412dd8299b02e4410fe77b8396953c1a8dde183a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/499d198494e77b6533251b9b909baf5c101129cb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4a131d4ea8b581ac9b01d3a72754db4848be3232"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6044ad64f41c87382cfeeca281573d1886d80cbe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/87909291762d08fdb60d19069d7a89b5b308d0ef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f581df412bc45c95176e3c808ee2839c05b2ab0c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:2951", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-477.10.1.el8_8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-05-16T00:00:00Z"}, {"advisory": "RHSA-2025:10179", "cpe": "cpe:/o:redhat:rhel_aus:8.2", "package": "kernel-0:4.18.0-193.156.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2025-07-02T00:00:00Z"}, {"advisory": "RHSA-2025:10005", "cpe": "cpe:/o:redhat:rhel_aus:8.4", "package": "kernel-0:4.18.0-305.161.1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10009", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.150.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10009", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.150.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10009", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.150.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2025:10174", "cpe": "cpe:/a:redhat:rhel_e4s:9.0", "package": "kernel-0:5.14.0-70.136.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2025-07-01T00:00:00Z"}, {"advisory": "RHSA-2025:10193", "cpe": "cpe:/a:redhat:rhel_e4s:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.136.1.rt21.208.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2025-07-02T00:00:00Z"}], "bugzilla": {"description": "kernel: scsi: libfc: Fix use after free in fc_exch_abts_resp()", "id": "2348136", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348136"}, "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": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: libfc: Fix use after free in fc_exch_abts_resp()\nfc_exch_release(ep) will decrease the ep's reference count. When the\nreference count reaches zero, it is freed. But ep is still used in the\nfollowing code, which will lead to a use after free.\nReturn after the fc_exch_release() call to avoid use after free.", "A vulnerability was found in the Linux kernel's SCSI libfc library in the `fc_exch_abts_resp()` function, which can lead to a use-after-free scenario. This issue can occur because the function calls `fc_exch_release()`, which decrements a reference count stored in the `ep` object and then frees the object once the count is zero. However, the `ep` object is referenced again and can result in the now-freed `ep` pointer being accessed, resulting in system instability, memory corruption, and potential arbitrary code execution."], "name": "CVE-2022-49114", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"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-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49114\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49114\nhttps://lore.kernel.org/linux-cve-announce/2025022602-CVE-2022-49114-86bb@gregkh/T"], "threat_severity": "Moderate"}

{}