CVE-2024-56584

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The syzbot test case includes injecting memory allocation\nfailures, and it very much looks like xa_store() can fail one of its\nmemory allocations and end up with ->head being non-NULL even though no\nentries exist in the xarray.\n\nUntil this issue gets sorted out, work around it by attempting to\niterate entries in our xarray, and WARN_ON_ONCE() if one is found."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/tctx.c"], "versions": [{"version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "lessThan": "e05c070b401f6365c503e2b59f091331965c4fb9", "status": "affected", "versionType": "git"}, {"version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "lessThan": "3a84fa784710990964c1e35df743851ab2863898", "status": "affected", "versionType": "git"}, {"version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "lessThan": "94ad56f61b873ffeebcc620d451eacfbdf9d40f0", "status": "affected", "versionType": "git"}, {"version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "lessThan": "42882b583095dcf747da6e3af1daeff40e27033e", "status": "affected", "versionType": "git"}, {"version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "lessThan": "d5b2ddf1f90c7248eff9630b95895c8950f2f36d", "status": "affected", "versionType": "git"}, {"version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "lessThan": "7eb75ce7527129d7f1fee6951566af409a37a1c4", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/tctx.c"], "versions": [{"version": "5.1", "status": "affected"}, {"version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.120", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.66", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.5", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "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": "5.1", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.1.120"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.6.66"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.12.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e05c070b401f6365c503e2b59f091331965c4fb9"}, {"url": "https://git.kernel.org/stable/c/3a84fa784710990964c1e35df743851ab2863898"}, {"url": "https://git.kernel.org/stable/c/94ad56f61b873ffeebcc620d451eacfbdf9d40f0"}, {"url": "https://git.kernel.org/stable/c/42882b583095dcf747da6e3af1daeff40e27033e"}, {"url": "https://git.kernel.org/stable/c/d5b2ddf1f90c7248eff9630b95895c8950f2f36d"}, {"url": "https://git.kernel.org/stable/c/7eb75ce7527129d7f1fee6951566af409a37a1c4"}], "title": "io_uring/tctx: work around xa_store() allocation error issue", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:50:01.079Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-56584", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-05T20:28:57.530482Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-05T20:31:24.360Z"}}]}}

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The syzbot test case includes injecting memory allocation\nfailures, and it very much looks like xa_store() can fail one of its\nmemory allocations and end up with ->head being non-NULL even though no\nentries exist in the xarray.\n\nUntil this issue gets sorted out, work around it by attempting to\niterate entries in our xarray, and WARN_ON_ONCE() if one is found."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.253", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.120", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.66", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.5", "versionStartIncluding": "5.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.13", "versionStartIncluding": "5.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:55:17.165Z"}}}, "cveMetadata": {"cveId": "CVE-2024-56584", "state": "PUBLISHED", "dateUpdated": "2026-11-05T20:31:24.360Z", "dateReserved": "2024-12-27T14:03:06.001Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-12-27T14:50:52.735Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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The syzbot test case includes injecting memory allocation\nfailures, and it very much looks like xa_store() can fail one of its\nmemory allocations and end up with ->head being non-NULL even though no\nentries exist in the xarray.\n\nUntil this issue gets sorted out, work around it by attempting to\niterate entries in our xarray, and WARN_ON_ONCE() if one is found."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring/tctx: workaround al problema de error de asignaci\u00f3n de xa_store() syzbot activ\u00f3 el siguiente WARN_ON: WARNING: CPU: 0 PID: 16 en io_uring/tctx.c:51 __io_uring_free+0xfa/0x140 io_uring/tctx.c:51 que es la comprobaci\u00f3n de cordura WARN_ON_ONCE(!xa_empty(&tctx->xa)); en __io_uring_free() cuando una io_uring_task est\u00e1 pasando por su put final. El caso de prueba de syzbot incluye la inyecci\u00f3n de fallos de asignaci\u00f3n de memoria, y parece que xa_store() puede fallar en una de sus asignaciones de memoria y terminar con ->head siendo distinto de NULL aunque no existan entradas en la matriz x. Hasta que se resuelva este problema, puede solucionarlo intentando iterar las entradas en nuestra matriz x y usar WARN_ON_ONCE() si encuentra alguna."}], "id": "CVE-2024-56584", "lastModified": "2026-11-05T21:17:35.760", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-56584", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:28:57.530482Z", "version": "2.0.3"}}]}, "published": "2024-12-27T15:15:17.567", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3a84fa784710990964c1e35df743851ab2863898"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42882b583095dcf747da6e3af1daeff40e27033e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7eb75ce7527129d7f1fee6951566af409a37a1c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/94ad56f61b873ffeebcc620d451eacfbdf9d40f0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d5b2ddf1f90c7248eff9630b95895c8950f2f36d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e05c070b401f6365c503e2b59f091331965c4fb9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: io_uring/tctx: work around xa_store() allocation error issue", "id": "2334510", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334510"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-400", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nio_uring/tctx: work around xa_store() allocation error issue\nsyzbot triggered the following WARN_ON:\nWARNING: CPU: 0 PID: 16 at io_uring/tctx.c:51 __io_uring_free+0xfa/0x140 io_uring/tctx.c:51\nwhich is the\nWARN_ON_ONCE(!xa_empty(&tctx->xa));\nsanity check in __io_uring_free() when a io_uring_task is going through\nits final put. The syzbot test case includes injecting memory allocation\nfailures, and it very much looks like xa_store() can fail one of its\nmemory allocations and end up with ->head being non-NULL even though no\nentries exist in the xarray.\nUntil this issue gets sorted out, work around it by attempting to\niterate entries in our xarray, and WARN_ON_ONCE() if one is found."], "name": "CVE-2024-56584", "package_state": [{"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": "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": "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": "2024-12-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56584\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56584\nhttps://lore.kernel.org/linux-cve-announce/2024122757-CVE-2024-56584-dad9@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T15:42:42.258491+00:00", "updated": "2025-07-12T15:42:42.258581+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}