CVE-2026-43410

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43410", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.008Z", "datePublished": "2026-05-08T14:21:48.885Z", "dateUpdated": "2026-05-11T22:24:02.917Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:24:02.917Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled\n\nWhen the Remote System Update (RSU) isn't enabled in the First Stage\nBoot Loader (FSBL), the driver encounters a NULL pointer dereference when\nexcute svc_normal_to_secure_thread() thread, resulting in a kernel panic:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000008\nMem abort info:\n...\nData abort info:\n...\n[0000000000000008] user address but active_mm is swapper\nInternal error: Oops: 0000000096000004 [#1] SMP\nModules linked in:\nCPU: 0 UID: 0 PID: 79 Comm: svc_smc_hvc_thr Not tainted 6.19.0-rc8-yocto-standard+ #59 PREEMPT\nHardware name: SoCFPGA Stratix 10 SoCDK (DT)\npstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : svc_normal_to_secure_thread+0x38c/0x990\nlr : svc_normal_to_secure_thread+0x144/0x990\n...\nCall trace:\n svc_normal_to_secure_thread+0x38c/0x990 (P)\n kthread+0x150/0x210\n ret_from_fork+0x10/0x20\nCode: 97cfc113 f9400260 aa1403e1 f9400400 (f9400402)\n---[ end trace 0000000000000000 ]---\n\nThe issue occurs because rsu_send_async_msg() fails when RSU is not enabled\nin firmware, causing the channel to be freed via stratix10_svc_free_channel().\nHowever, the probe function continues execution and registers\nsvc_normal_to_secure_thread(), which subsequently attempts to access the\nalready-freed channel, triggering the NULL pointer dereference.\n\nFix this by properly cleaning up the async client and returning early on\nfailure, preventing the thread from being used with an invalid channel."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/firmware/stratix10-rsu.c"], "versions": [{"version": "15847537b623f844d9a08da99ff4568315e1d4f8", "lessThan": "aa5739e0c51ad01c6e763ca89c1bfb58fc6ea71a", "status": "affected", "versionType": "git"}, {"version": "15847537b623f844d9a08da99ff4568315e1d4f8", "lessThan": "c45f7263100cece247dd3fa5fe277bd97fdb5687", "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/firmware/stratix10-rsu.c"], "versions": [{"version": "6.19", "status": "affected"}, {"version": "0", "lessThan": "6.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.9", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.19", "versionEndExcluding": "6.19.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/aa5739e0c51ad01c6e763ca89c1bfb58fc6ea71a"}, {"url": "https://git.kernel.org/stable/c/c45f7263100cece247dd3fa5fe277bd97fdb5687"}], "title": "firmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/firmware/stratix10-rsu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "aa5739e0c51ad01c6e763ca89c1bfb58fc6ea71a", "status": "affected", "version": "15847537b623f844d9a08da99ff4568315e1d4f8", "versionType": "git"}, {"lessThan": "c45f7263100cece247dd3fa5fe277bd97fdb5687", "status": "affected", "version": "15847537b623f844d9a08da99ff4568315e1d4f8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/firmware/stratix10-rsu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.19"}, {"lessThan": "6.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E825E7C3-FEAC-4FD3-8A81-78D7387948C9", "versionEndExcluding": "6.19.9", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled\n\nWhen the Remote System Update (RSU) isn't enabled in the First Stage\nBoot Loader (FSBL), the driver encounters a NULL pointer dereference when\nexcute svc_normal_to_secure_thread() thread, resulting in a kernel panic:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000008\nMem abort info:\n...\nData abort info:\n...\n[0000000000000008] user address but active_mm is swapper\nInternal error: Oops: 0000000096000004 [#1] SMP\nModules linked in:\nCPU: 0 UID: 0 PID: 79 Comm: svc_smc_hvc_thr Not tainted 6.19.0-rc8-yocto-standard+ #59 PREEMPT\nHardware name: SoCFPGA Stratix 10 SoCDK (DT)\npstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : svc_normal_to_secure_thread+0x38c/0x990\nlr : svc_normal_to_secure_thread+0x144/0x990\n...\nCall trace:\n svc_normal_to_secure_thread+0x38c/0x990 (P)\n kthread+0x150/0x210\n ret_from_fork+0x10/0x20\nCode: 97cfc113 f9400260 aa1403e1 f9400400 (f9400402)\n---[ end trace 0000000000000000 ]---\n\nThe issue occurs because rsu_send_async_msg() fails when RSU is not enabled\nin firmware, causing the channel to be freed via stratix10_svc_free_channel().\nHowever, the probe function continues execution and registers\nsvc_normal_to_secure_thread(), which subsequently attempts to access the\nalready-freed channel, triggering the NULL pointer dereference.\n\nFix this by properly cleaning up the async client and returning early on\nfailure, preventing the thread from being used with an invalid channel."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nfirmware: stratix10-rsu: Correcci\u00f3n de desreferencia de puntero NULL cuando RSU est\u00e1 deshabilitado\n\nCuando la Actualizaci\u00f3n Remota del Sistema (RSU) no est\u00e1 habilitada en el Cargador de Arranque de Primera Etapa (FSBL), el controlador encuentra una desreferencia de puntero NULL al ejecutar el hilo svc_normal_to_secure_thread(), lo que resulta en un p\u00e1nico del kernel:\n\nNo se puede manejar la desreferencia de puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000008\nInformaci\u00f3n de aborto de memoria:\n...\nInformaci\u00f3n de aborto de datos:\n...\n[0000000000000008] direcci\u00f3n de usuario pero active_mm es swapper\nError interno: Oops: 0000000096000004 [#1] SMP\nM\u00f3dulos enlazados:\nCPU: 0 UID: 0 PID: 79 Comm: svc_smc_hvc_thr No contaminado 6.19.0-rc8-yocto-standard+ #59 PREEMPT\nNombre del hardware: SoCFPGA Stratix 10 SoCDK (DT)\npstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : svc_normal_to_secure_thread+0x38c/0x990\nlr : svc_normal_to_secure_thread+0x144/0x990\n...\nTraza de llamada:\n svc_normal_to_secure_thread+0x38c/0x990 (P)\n kthread+0x150/0x210\n ret_from_fork+0x10/0x20\nC\u00f3digo: 97cfc113 f9400260 aa1403e1 f9400400 (f9400402)\n---[ fin de traza 0000000000000000 ]---\n\nEl problema ocurre porque rsu_send_async_msg() falla cuando RSU no est\u00e1 habilitado en el firmware, lo que provoca que el canal sea liberado a trav\u00e9s de stratix10_svc_free_channel(). Sin embargo, la funci\u00f3n de sondeo contin\u00faa la ejecuci\u00f3n y registra svc_normal_to_secure_thread(), que posteriormente intenta acceder al canal ya liberado, lo que desencadena la desreferencia de puntero NULL.\n\nSolucione esto limpiando adecuadamente el cliente as\u00edncrono y regresando anticipadamente en caso de fallo, evitando que el hilo sea utilizado con un canal inv\u00e1lido."}], "id": "CVE-2026-43410", "lastModified": "2026-11-11T20:10:00.273", "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": "2026-05-08T15:16:52.633", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aa5739e0c51ad01c6e763ca89c1bfb58fc6ea71a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c45f7263100cece247dd3fa5fe277bd97fdb5687"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: firmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled", "id": "2468176", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468176"}, "csaw": false, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's stratix10-rsu firmware driver. When the Remote System Update (RSU) is not enabled in the First Stage Boot Loader (FSBL), the driver attempts to access an already-freed channel. This can lead to a NULL pointer dereference, causing a kernel panic and resulting in a Denial of Service (DoS) for the system."], "name": "CVE-2026-43410", "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": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43410\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43410\nhttps://lore.kernel.org/linux-cve-announce/2026050843-CVE-2026-43410-82d1@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[15847537b623f844d9a08da99ff4568315e1d4f8,aa5739e0c51ad01c6e763ca89c1bfb58fc6ea71a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[15847537b623f844d9a08da99ff4568315e1d4f8,c45f7263100cece247dd3fa5fe277bd97fdb5687)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.9,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-08T18:15:13.671076+00:00", "updated": "2026-05-21T21:30:19.352667+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}