{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49114", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.262Z", "datePublished": "2025-02-26T01:54:58.172Z", "dateUpdated": "2026-08-05T08:53:58.360Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:53:58.360Z" }, "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. 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", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/libfc/fc_exch.c" ], "versions": [ { "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "4a131d4ea8b581ac9b01d3a72754db4848be3232", "status": "affected", "versionType": "git" }, { "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "499d198494e77b6533251b9b909baf5c101129cb", "status": "affected", "versionType": "git" }, { "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "6044ad64f41c87382cfeeca281573d1886d80cbe", "status": "affected", "versionType": "git" }, { "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836", "status": "affected", "versionType": "git" }, { "version": "42e9a92fe6a9095bd68a379aaec7ad2be0337f7a", "lessThan": "1d7effe5fff9d28e45e18ac3a564067c7ddfe898", "status": "affected", "versionType": "git" }, { "version": "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": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "4.9.311" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "4.14.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "4.19.238" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.4.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.10.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.15.34" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.16.20" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.17.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.18" } ] } ] } ], "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" } ], "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" } } ] } }