CVE-2024-42099

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There is no network-facing component.\nAC:L - IDAWs are used for practically every DASD request on any LPAR with more than 2 GB of memory, so the CCW_FLAG_IDA precondition is met by default, and an attacker with access to the DASD device can provoke permanently failing requests (e.g. reads against tracks whose format does not match the configured block size, or ESE/space-exhaust conditions) to drive the request into DASD_CQR_FAILED and the sense-dump path.\nPR:L - The path is entered from ordinary block I/O completion \u2014 dasd_log_sense() is invoked for any failed cqr with no capability check \u2014 so an unprivileged local user performing normal file I/O on a DASD-backed filesystem can reach it. No CAP_SYS_ADMIN gate applies (unlike the DASD ioctls in dasd_ioctl.c).\nUI:N - The faulty dereference happens automatically inside the driver's error-recovery/sense-dump path; no action by any other user is needed.\nS:U - The wild dereference, the log disclosure and the slab free all occur within the kernel's own security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - Up to 128 bytes are read through the mistranslated pointer and formatted into a dev_err() kernel log message, and in dasd_{eckd,fba}_free_cp the same pointer is the source of memcpy() into a page returned to userspace; where the untranslated absolute address resolves to mapped memory this is a kernel-memory disclosure primitive rather than a mere fault.\nI:H - dasd_eckd_free_cp()/dasd_fba_free_cp() pass the mistranslated pointer to kmem_cache_free(dasd_page_cache, cda & PAGE_MASK), injecting an arbitrary address into the slab allocator's freelist \u2014 allocator metadata/live-object corruption that is the classic basis for a write primitive.\nA:H - The commit states the bug \"leads to a kernel panic in error cases\"; the dereference occurs in interrupt/tasklet context on an unmapped address, producing an unrecoverable addressing exception and taking the whole system down."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/s390/block/dasd_eckd.c", "drivers/s390/block/dasd_fba.c"], "versions": [{"version": "c0bd39601c13ab08e961d77a90dfeeff56056353", "lessThan": "c116475f7d6410b1e6d399207ac75de6cf9c3652", "status": "affected", "versionType": "git"}, {"version": "c0bd39601c13ab08e961d77a90dfeeff56056353", "lessThan": "b3a58f3b90f564f42a5c35778d8c5107b2c2150b", "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/s390/block/dasd_eckd.c", "drivers/s390/block/dasd_fba.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.9.9", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10", "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": "6.9", "versionEndExcluding": "6.9.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c116475f7d6410b1e6d399207ac75de6cf9c3652"}, {"url": "https://git.kernel.org/stable/c/b3a58f3b90f564f42a5c35778d8c5107b2c2150b"}], "title": "s390/dasd: Fix invalid dereferencing of indirect CCW data pointer", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:54:31.742Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/c116475f7d6410b1e6d399207ac75de6cf9c3652", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b3a58f3b90f564f42a5c35778d8c5107b2c2150b", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-42099", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:18:08.885976Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:49.224Z"}}]}}

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Se corrige la desreferenciaci\u00f3n no v\u00e1lida del puntero de datos CCW indirecto en dasd_eckd_dump_sense() que genera p\u00e1nico en el kernel en casos de error. Cuando se utiliza direccionamiento indirecto para DASD CCW (IDAW), el puntero CCW CDA no contiene la direcci\u00f3n de datos en s\u00ed, sino un puntero al IDAL. Esto tambi\u00e9n debe traducirse de f\u00edsico a virtual antes de usarlo. Esta desreferenciaci\u00f3n tambi\u00e9n se usa para dasd_page_cache y tambi\u00e9n se corrige, aunque es muy poco probable que esta ruta de c\u00f3digo se use alguna vez."}], "id": "CVE-2024-42099", "lastModified": "2026-08-04T11:19:33.370", "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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-2024-42099", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:18:08.885976Z", "version": "2.0.3"}}]}, "published": "2024-07-30T08:15:02.503", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b3a58f3b90f564f42a5c35778d8c5107b2c2150b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c116475f7d6410b1e6d399207ac75de6cf9c3652"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b3a58f3b90f564f42a5c35778d8c5107b2c2150b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c116475f7d6410b1e6d399207ac75de6cf9c3652"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: s390/dasd: Fix invalid dereferencing of indirect CCW data pointer", "id": "2301462", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2301462"}, "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-404", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ns390/dasd: Fix invalid dereferencing of indirect CCW data pointer\nFix invalid dereferencing of indirect CCW data pointer in\ndasd_eckd_dump_sense() that leads to a kernel panic in error cases.\nWhen using indirect addressing for DASD CCWs (IDAW) the CCW CDA pointer\ndoes not contain the data address itself but a pointer to the IDAL.\nThis needs to be translated from physical to virtual as well before\nusing it.\nThis dereferencing is also used for dasd_page_cache and also fixed\nalthough it is very unlikely that this code path ever gets used.", "A vulnerability was found in the `s390/dasd` subsystem in the Linux Kernel, where an invalid dereferencing of an indirect Channel Command Word (CCW) data pointer could cause a kernel panic. The issue occurs due to the CCW Command Data Address (CDA) pointer used with indirect addressing (IDAW), which needs proper translation from physical to virtual memory."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-42099", "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": "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": "2024-07-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-42099\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-42099\nhttps://lore.kernel.org/linux-cve-announce/2024073018-CVE-2024-42099-d7b7@gregkh/T"], "statement": "Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.", "threat_severity": "Moderate"}

{"created": "2025-07-12T23:05:53.136550+00:00", "updated": "2025-07-12T23:05:53.136603+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}