CVE-2022-49761

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This can lead to very little useful info for\ndebugging.\n\nThis patch will:\n\n- Add extra info for error reporting\n Including:\n * logical bytenr\n * num_bytes\n * type\n * action\n * ref_mod\n\n- Replace the btrfs_debug() with btrfs_err()\n\n- Move the error reporting into run_one_delayed_ref()\n This is to avoid use-after-free, the @node can be freed in the caller.\n\nThis error should only be triggered at most once.\n\nAs if run_one_delayed_ref() failed, we trigger the error message, then\ncausing the call chain to error out:\n\nbtrfs_run_delayed_refs()\n`- btrfs_run_delayed_refs()\n `- btrfs_run_delayed_refs_for_head()\n `- run_one_delayed_ref()\n\nAnd we will abort the current transaction in btrfs_run_delayed_refs().\nIf we have to run delayed refs for the abort transaction,\nrun_one_delayed_ref() will just cleanup the refs and do nothing, thus no\nnew error messages would be output."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/extent-tree.c"], "versions": [{"version": "79787eaab46121d4713ed03c8fc63b9ec3eaec76", "lessThan": "18bd1c9c02e64a3567f90c83c2c8b855531c8098", "status": "affected", "versionType": "git"}, {"version": "79787eaab46121d4713ed03c8fc63b9ec3eaec76", "lessThan": "fdb4a70bb768d2a87890409597529ad81cb3de8a", "status": "affected", "versionType": "git"}, {"version": "79787eaab46121d4713ed03c8fc63b9ec3eaec76", "lessThan": "853ffa1511b058c79a4c9bb1407b3b20ce311792", "status": "affected", "versionType": "git"}, {"version": "79787eaab46121d4713ed03c8fc63b9ec3eaec76", "lessThan": "39f501d68ec1ed5cd5c66ac6ec2a7131c517bb92", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/extent-tree.c"], "versions": [{"version": "3.4", "status": "affected"}, {"version": "0", "lessThan": "3.4", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.165", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.90", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.8", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2", "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": "3.4", "versionEndExcluding": "5.10.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "5.15.90"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/18bd1c9c02e64a3567f90c83c2c8b855531c8098"}, {"url": "https://git.kernel.org/stable/c/fdb4a70bb768d2a87890409597529ad81cb3de8a"}, {"url": "https://git.kernel.org/stable/c/853ffa1511b058c79a4c9bb1407b3b20ce311792"}, {"url": "https://git.kernel.org/stable/c/39f501d68ec1ed5cd5c66ac6ec2a7131c517bb92"}], "title": "btrfs: always report error in run_one_delayed_ref()", "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-2022-49761", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-03-28T15:20:30.780085Z"}}}], "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": "2025-03-28T15:21:57.235Z"}}]}}

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This can lead to very little useful info for\ndebugging.\n\nThis patch will:\n\n- Add extra info for error reporting\n Including:\n * logical bytenr\n * num_bytes\n * type\n * action\n * ref_mod\n\n- Replace the btrfs_debug() with btrfs_err()\n\n- Move the error reporting into run_one_delayed_ref()\n This is to avoid use-after-free, the @node can be freed in the caller.\n\nThis error should only be triggered at most once.\n\nAs if run_one_delayed_ref() failed, we trigger the error message, then\ncausing the call chain to error out:\n\nbtrfs_run_delayed_refs()\n`- btrfs_run_delayed_refs()\n `- btrfs_run_delayed_refs_for_head()\n `- run_one_delayed_ref()\n\nAnd we will abort the current transaction in btrfs_run_delayed_refs().\nIf we have to run delayed refs for the abort transaction,\nrun_one_delayed_ref() will just cleanup the refs and do nothing, thus no\nnew error messages would be output."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.165", "versionStartIncluding": "3.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.90", "versionStartIncluding": "3.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.8", "versionStartIncluding": "3.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.2", "versionStartIncluding": "3.4"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-23T13:25:34.509Z"}}}, "cveMetadata": {"cveId": "CVE-2022-49761", "state": "PUBLISHED", "dateUpdated": "2025-12-23T13:25:34.509Z", "dateReserved": "2025-03-27T16:39:17.990Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-03-27T16:43:07.633Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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This can lead to very little useful info for\ndebugging.\n\nThis patch will:\n\n- Add extra info for error reporting\n Including:\n * logical bytenr\n * num_bytes\n * type\n * action\n * ref_mod\n\n- Replace the btrfs_debug() with btrfs_err()\n\n- Move the error reporting into run_one_delayed_ref()\n This is to avoid use-after-free, the @node can be freed in the caller.\n\nThis error should only be triggered at most once.\n\nAs if run_one_delayed_ref() failed, we trigger the error message, then\ncausing the call chain to error out:\n\nbtrfs_run_delayed_refs()\n`- btrfs_run_delayed_refs()\n `- btrfs_run_delayed_refs_for_head()\n `- run_one_delayed_ref()\n\nAnd we will abort the current transaction in btrfs_run_delayed_refs().\nIf we have to run delayed refs for the abort transaction,\nrun_one_delayed_ref() will just cleanup the refs and do nothing, thus no\nnew error messages would be output."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: siempre informa el error en run_one_delayed_ref() Actualmente tenemos un btrfs_debug() para el fallo de run_one_delayed_ref(), pero si los usuarios finales se encuentran con dicho problema, no habr\u00e1 ninguna posibilidad de que btrfs_debug() est\u00e9 habilitado. Esto puede llevar a muy poca informaci\u00f3n \u00fatil para la depuraci\u00f3n. Este parche har\u00e1 lo siguiente: - Agregar informaci\u00f3n adicional para el informe de errores Incluyendo: * byte l\u00f3gico * num_bytes * tipo * acci\u00f3n * ref_mod - Reemplazar btrfs_debug() con btrfs_err() - Mover el informe de errores a run_one_delayed_ref() Esto es para evitar el use-after-free, el @nodo se puede liberar en el llamador. Este error solo debe activarse como m\u00e1ximo una vez. Como si run_one_delayed_ref() fallara, se genera un mensaje de error, lo que provoca que la cadena de llamadas genere un error: btrfs_run_delayed_refs() `- btrfs_run_delayed_refs() `- btrfs_run_delayed_refs_for_head() `- run_one_delayed_ref(). Abortaremos la transacci\u00f3n actual en btrfs_run_delayed_refs(). Si necesitamos ejecutar referencias retrasadas para la transacci\u00f3n abortada, run_one_delayed_ref() simplemente las limpiar\u00e1 y no har\u00e1 nada, por lo que no se generar\u00e1n nuevos mensajes de error."}], "id": "CVE-2022-49761", "lastModified": "2026-06-17T05:19:04.920", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-49761", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-03-28T15:20:30.780085Z", "version": "2.0.3"}}]}, "published": "2025-03-27T17:15:41.407", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/18bd1c9c02e64a3567f90c83c2c8b855531c8098"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/39f501d68ec1ed5cd5c66ac6ec2a7131c517bb92"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/853ffa1511b058c79a4c9bb1407b3b20ce311792"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fdb4a70bb768d2a87890409597529ad81cb3de8a"}], "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: btrfs: always report error in run_one_delayed_ref()", "id": "2355449", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2355449"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-248", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: always report error in run_one_delayed_ref()\nCurrently we have a btrfs_debug() for run_one_delayed_ref() failure, but\nif end users hit such problem, there will be no chance that\nbtrfs_debug() is enabled. This can lead to very little useful info for\ndebugging.\nThis patch will:\n- Add extra info for error reporting\nIncluding:\n* logical bytenr\n* num_bytes\n* type\n* action\n* ref_mod\n- Replace the btrfs_debug() with btrfs_err()\n- Move the error reporting into run_one_delayed_ref()\nThis is to avoid use-after-free, the @node can be freed in the caller.\nThis error should only be triggered at most once.\nAs if run_one_delayed_ref() failed, we trigger the error message, then\ncausing the call chain to error out:\nbtrfs_run_delayed_refs()\n`- btrfs_run_delayed_refs()\n`- btrfs_run_delayed_refs_for_head()\n`- run_one_delayed_ref()\nAnd we will abort the current transaction in btrfs_run_delayed_refs().\nIf we have to run delayed refs for the abort transaction,\nrun_one_delayed_ref() will just cleanup the refs and do nothing, thus no\nnew error messages would be output."], "name": "CVE-2022-49761", "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": "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "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-2022-49761\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49761\nhttps://lore.kernel.org/linux-cve-announce/2025032703-CVE-2022-49761-9b1e@gregkh/T"], "threat_severity": "Low"}

{}