{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23217", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.987Z", "datePublished": "2026-02-18T14:21:54.878Z", "dateUpdated": "2026-02-20T11:31:05.011Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-20T11:31:05.011Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: trace: fix snapshot deadlock with sbi ecall\n\nIf sbi_ecall.c's functions are traceable,\n\necho \"__sbi_ecall:snapshot\" > /sys/kernel/tracing/set_ftrace_filter\n\nmay get the kernel into a deadlock.\n\n(Functions in sbi_ecall.c are excluded from tracing if\nCONFIG_RISCV_ALTERNATIVE_EARLY is set.)\n\n__sbi_ecall triggers a snapshot of the ringbuffer. The snapshot code\nraises an IPI interrupt, which results in another call to __sbi_ecall\nand another snapshot...\n\nAll it takes to get into this endless loop is one initial __sbi_ecall.\nOn RISC-V systems without SSTC extension, the clock events in\ntimer-riscv.c issue periodic sbi ecalls, making the problem easy to\ntrigger.\n\nAlways exclude the sbi_ecall.c functions from tracing to fix the\npotential deadlock.\n\nsbi ecalls can easiliy be logged via trace events, excluding ecall\nfunctions from function tracing is not a big limitation."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/riscv/kernel/Makefile"], "versions": [{"version": "1ff95eb2bebda50c4c5406caaf201e0fcb24cc8f", "lessThan": "b1f8285bc8e3508c1fde23b5205f1270215d4984", "status": "affected", "versionType": "git"}, {"version": "1ff95eb2bebda50c4c5406caaf201e0fcb24cc8f", "lessThan": "b0d7f5f0c9f05f1b6d4ee7110f15bef9c11f9df0", "status": "affected", "versionType": "git"}, {"version": "82f134ddd4f5da11c277bd1aa02e2a733179725a", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/riscv/kernel/Makefile"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.10", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "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": "6.11", "versionEndExcluding": "6.18.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b1f8285bc8e3508c1fde23b5205f1270215d4984"}, {"url": "https://git.kernel.org/stable/c/b0d7f5f0c9f05f1b6d4ee7110f15bef9c11f9df0"}], "title": "riscv: trace: fix snapshot deadlock with sbi ecall", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20B10614-CE0D-494A-9FEA-F01A6985C9B7", "versionEndExcluding": "6.11", "versionStartIncluding": "6.10.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EA8A5D78-6E70-4B4A-802B-44FFB0543B56", "versionEndExcluding": "6.18.10", "versionStartIncluding": "6.11.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:-:*:*:*:*:*:*", "matchCriteriaId": "4770BA57-3F3F-493B-8608-EC3B25254949", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:*", "matchCriteriaId": "DE5298B3-04B4-4F3E-B186-01A58B5C75A6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: trace: fix snapshot deadlock with sbi ecall\n\nIf sbi_ecall.c's functions are traceable,\n\necho \"__sbi_ecall:snapshot\" > /sys/kernel/tracing/set_ftrace_filter\n\nmay get the kernel into a deadlock.\n\n(Functions in sbi_ecall.c are excluded from tracing if\nCONFIG_RISCV_ALTERNATIVE_EARLY is set.)\n\n__sbi_ecall triggers a snapshot of the ringbuffer. The snapshot code\nraises an IPI interrupt, which results in another call to __sbi_ecall\nand another snapshot...\n\nAll it takes to get into this endless loop is one initial __sbi_ecall.\nOn RISC-V systems without SSTC extension, the clock events in\ntimer-riscv.c issue periodic sbi ecalls, making the problem easy to\ntrigger.\n\nAlways exclude the sbi_ecall.c functions from tracing to fix the\npotential deadlock.\n\nsbi ecalls can easiliy be logged via trace events, excluding ecall\nfunctions from function tracing is not a big limitation."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nriscv: trace: corregir interbloqueo de instant\u00e1nea con sbi ecall\n\nSi las funciones de sbi_ecall.c son rastreables,\n\necho '__sbi_ecall:snapshot' > /sys/kernel/tracing/set_ftrace_filter\n\npuede llevar al kernel a un interbloqueo.\n\n(Las funciones en sbi_ecall.c se excluyen del rastreo si CONFIG_RISCV_ALTERNATIVE_EARLY est\u00e1 configurado.)\n\n__sbi_ecall activa una instant\u00e1nea del ringbuffer. El c\u00f3digo de la instant\u00e1nea genera una interrupci\u00f3n IPI, lo que resulta en otra llamada a __sbi_ecall y otra instant\u00e1nea...\n\nTodo lo que se necesita para entrar en este bucle infinito es una __sbi_ecall inicial. En sistemas RISC-V sin la extensi\u00f3n SSTC, los eventos de reloj en timer-riscv.c emiten sbi ecalls peri\u00f3dicas, haciendo que el problema sea f\u00e1cil de activar.\n\nExcluir siempre las funciones de sbi_ecall.c del rastreo para corregir el interbloqueo potencial.\n\nLas sbi ecalls pueden registrarse f\u00e1cilmente a trav\u00e9s de eventos de rastreo, excluir las funciones ecall del rastreo de funciones no es una gran limitaci\u00f3n."}], "id": "CVE-2026-23217", "lastModified": "2026-03-18T17:36:43.673", "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"}]}, "published": "2026-02-18T15:18:43.080", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b0d7f5f0c9f05f1b6d4ee7110f15bef9c11f9df0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b1f8285bc8e3508c1fde23b5205f1270215d4984"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: riscv: trace: fix snapshot deadlock with sbi ecall", "id": "2440634", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440634"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2026-23217", "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": "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": "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": "2026-02-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23217\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23217\nhttps://lore.kernel.org/linux-cve-announce/2026021800-CVE-2026-23217-f399@gregkh/T"]}

{"created": "2026-02-19T10:19:37.470739+00:00", "updated": "2026-02-19T10:19:37.470843+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}