{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2024-35813", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T12:19:12.343Z", "datePublished": "2024-05-17T13:23:18.902Z", "dateUpdated": "2026-08-05T11:30:06.940Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:30:06.940Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: core: Avoid negative index with array access\n\nCommit 4d0c8d0aef63 (\"mmc: core: Use mrq.sbc in close-ended ffu\") assigns\nprev_idata = idatas[i - 1], but doesn't check that the iterator i is\ngreater than zero. Let's fix this by adding a check."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only via the MMC_IOC_CMD / MMC_IOC_MULTI_CMD ioctls on the local /dev/mmcblkN block device or the /dev/mmcblkNrpmb character device. There is no remote or adjacent-network path into drivers/mmc/core/block.c.\nAC:L - Triggering requires the uninitialized `flags` field (kmalloc'd throughout the affected range) to have MMC_BLK_IOC_SBC set on the first command, which the attacker controls by grooming the kmalloc-96/128 slab before the ioctl, and which can be retried in a tight loop at no cost. The subsequent `idatas[-1]` neighbor (an adjacent kmalloc-8 object or a live stack slot) is likewise attacker-influenceable via standard heap/stack spraying.\nPR:L - The RPMB character-device entry point (mmc_rpmb_ioctl \u2192 mmc_blk_ioctl_cmd/mmc_blk_ioctl_multi_cmd) performs no capable() check whatsoever \u2014 only DAC permissions on /dev/mmcblkNrpmb gate it \u2014 and on Android and embedded platforms that node is routinely opened by non-root system daemons, so an unprivileged-but-authorized local process suffices.\nUI:N - The attacker issues the ioctl directly from their own process; no victim action, mount, or file open by another user is needed.\nS:U - The out-of-bounds access and the resulting corruption are entirely within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The negative index performs an out-of-bounds read of a pointer, and the resulting `prev_idata->ic.arg` dereference reads attacker-chosen kernel memory that is then emitted as the CMD23 argument; more broadly the memory corruption is leverageable for kernel information disclosure.\nI:H - `memcpy(&prev_idata->ic.response, sbc.resp, sizeof(sbc.resp))` performs a 16-byte write through the out-of-bounds-derived pointer, giving a write primitive at a heap-groomable address (or over live kernel pointers on the stack) that is exploitable for privilege escalation.\nA:H - Dereferencing the wild `idatas[-1]` pointer \u2014 read at `prev_idata->ic.arg` and write at `prev_idata->ic.response` \u2014 reliably produces a kernel oops/panic in the common case where the neighboring memory is not a valid object."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mmc/core/block.c"], "versions": [{"version": "f49f9e802785291149bdc9c824414de4604226b4", "lessThan": "b9a7339ae403035ffe7fc37cb034b36947910f68", "status": 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There is no remote or adjacent-network path into drivers/mmc/core/block.c.\nAC:L - Triggering requires the uninitialized `flags` field (kmalloc'd throughout the affected range) to have MMC_BLK_IOC_SBC set on the first command, which the attacker controls by grooming the kmalloc-96/128 slab before the ioctl, and which can be retried in a tight loop at no cost. The subsequent `idatas[-1]` neighbor (an adjacent kmalloc-8 object or a live stack slot) is likewise attacker-influenceable via standard heap/stack spraying.\nPR:L - The RPMB character-device entry point (mmc_rpmb_ioctl \u2192 mmc_blk_ioctl_cmd/mmc_blk_ioctl_multi_cmd) performs no capable() check whatsoever \u2014 only DAC permissions on /dev/mmcblkNrpmb gate it \u2014 and on Android and embedded platforms that node is routinely opened by non-root system daemons, so an unprivileged-but-authorized local process suffices.\nUI:N - The attacker issues the ioctl directly from their own process; no victim action, mount, or file open by another user is needed.\nS:U - The out-of-bounds access and the resulting corruption are entirely within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The negative index performs an out-of-bounds read of a pointer, and the resulting `prev_idata->ic.arg` dereference reads attacker-chosen kernel memory that is then emitted as the CMD23 argument; more broadly the memory corruption is leverageable for kernel information disclosure.\nI:H - `memcpy(&prev_idata->ic.response, sbc.resp, sizeof(sbc.resp))` performs a 16-byte write through the out-of-bounds-derived pointer, giving a write primitive at a heap-groomable address (or over live kernel pointers on the stack) that is exploitable for privilege escalation.\nA:H - Dereferencing the wild `idatas[-1]` pointer \u2014 read at `prev_idata->ic.arg` and write at `prev_idata->ic.response` \u2014 reliably produces a kernel oops/panic in the common case where the neighboring memory is not a valid object."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "f49f9e802785291149bdc9c824414de4604226b4", "lessThan": "b9a7339ae403035ffe7fc37cb034b36947910f68", "versionType": "git"}, {"status": "affected", "version": "59020bf0999ff7da8aedcd00ef8f0d75d93b6d20", "lessThan": "2b539c88940e22494da80a93ee1c5a28bbad10f6", "versionType": "git"}, {"status": "affected", "version": "50b8b7a22e90bab9f1949b64a88ff17ab10913ec", "lessThan": "81b8645feca08a54c7c4bf36e7b176f4983b2f28", "versionType": "git"}, {"status": "affected", "version": "c4edcd134bb72b3b0acc884612d624e48c9d057f", "lessThan": "ad9cc5e9e53ab94aa0c7ac65d43be7eb208dcb55", "versionType": "git"}, {"status": "affected", "version": "1653a8102868264f3488c298a9f20af2add9a288", "lessThan": "4466677dcabe2d70de6aa3d4bd4a4fafa94a71f2", "versionType": "git"}, {"status": "affected", "version": "eed9119f8f8e8fbf225c08abdbb58597fba807e0", "lessThan": "064db53f9023a2d5877a2d12de6bc27995f6ca56", "versionType": "git"}, {"status": "affected", "version": "4d0c8d0aef6355660b6775d57ccd5d4ea2e15802", "lessThan": "7d0e8a6147550aa058fa6ade8583ad252aa61304", "versionType": "git"}, {"status": "affected", "version": "4d0c8d0aef6355660b6775d57ccd5d4ea2e15802", "lessThan": "cf55a7acd1ed38afe43bba1c8a0935b51d1dc014", "versionType": "git"}, {"status": "affected", "version": "5.4.269", "lessThan": "5.4.274", "versionType": "semver"}, {"status": "affected", "version": "5.10.210", "lessThan": "5.10.215", "versionType": "semver"}, {"status": "affected", "version": "5.15.149", "lessThan": "5.15.154", "versionType": "semver"}, {"status": "affected", "version": "6.1.76", "lessThan": "6.1.84", "versionType": "semver"}, {"status": "affected", "version": "6.6.15", "lessThan": "6.6.24", "versionType": "semver"}, {"status": "affected", "version": "6.7.3", "lessThan": "6.7.12", "versionType": "semver"}], "programFiles": ["drivers/mmc/core/block.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"status": "unaffected", "version": "0", "lessThan": "6.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.274", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.215", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.154", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.84", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.24", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.12", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8.3", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/mmc/core/block.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/b9a7339ae403035ffe7fc37cb034b36947910f68"}, {"url": "https://git.kernel.org/stable/c/2b539c88940e22494da80a93ee1c5a28bbad10f6"}, {"url": "https://git.kernel.org/stable/c/81b8645feca08a54c7c4bf36e7b176f4983b2f28"}, {"url": "https://git.kernel.org/stable/c/ad9cc5e9e53ab94aa0c7ac65d43be7eb208dcb55"}, {"url": "https://git.kernel.org/stable/c/4466677dcabe2d70de6aa3d4bd4a4fafa94a71f2"}, {"url": "https://git.kernel.org/stable/c/064db53f9023a2d5877a2d12de6bc27995f6ca56"}, {"url": "https://git.kernel.org/stable/c/7d0e8a6147550aa058fa6ade8583ad252aa61304"}, {"url": "https://git.kernel.org/stable/c/cf55a7acd1ed38afe43bba1c8a0935b51d1dc014"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: core: Avoid negative index with array access\n\nCommit 4d0c8d0aef63 (\"mmc: core: Use mrq.sbc in close-ended ffu\") assigns\nprev_idata = idatas[i - 1], but doesn't check that the iterator i is\ngreater than zero. 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1], but doesn't check that the iterator i is\ngreater than zero. Let's fix this by adding a check."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mmc: core: evitar \u00edndice negativo con acceso a matriz Commit 4d0c8d0aef63 (\"mmc: core: usar mrq.sbc en ffu cerrado\") asigna prev_idata = idatas[i - 1] , pero no comprueba que el iterador i sea mayor que cero. Arreglemos esto agregando una comprobaci\u00f3n."}], "id": "CVE-2024-35813", "lastModified": "2026-06-17T07:35:27.593", "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-2024-35813", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-17T17:39:23.725113Z", "version": "2.0.3"}}]}, "published": "2024-05-17T14:15:15.617", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/064db53f9023a2d5877a2d12de6bc27995f6ca56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2b539c88940e22494da80a93ee1c5a28bbad10f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4466677dcabe2d70de6aa3d4bd4a4fafa94a71f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7d0e8a6147550aa058fa6ade8583ad252aa61304"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/81b8645feca08a54c7c4bf36e7b176f4983b2f28"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ad9cc5e9e53ab94aa0c7ac65d43be7eb208dcb55"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b9a7339ae403035ffe7fc37cb034b36947910f68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cf55a7acd1ed38afe43bba1c8a0935b51d1dc014"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/064db53f9023a2d5877a2d12de6bc27995f6ca56"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2b539c88940e22494da80a93ee1c5a28bbad10f6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4466677dcabe2d70de6aa3d4bd4a4fafa94a71f2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7d0e8a6147550aa058fa6ade8583ad252aa61304"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/81b8645feca08a54c7c4bf36e7b176f4983b2f28"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ad9cc5e9e53ab94aa0c7ac65d43be7eb208dcb55"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b9a7339ae403035ffe7fc37cb034b36947910f68"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cf55a7acd1ed38afe43bba1c8a0935b51d1dc014"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mmc: core: Avoid negative index with array access", "id": "2281209", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281209"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmmc: core: Avoid negative index with array access\nCommit 4d0c8d0aef63 (\"mmc: core: Use mrq.sbc in close-ended ffu\") assigns\nprev_idata = idatas[i - 1], but doesn't check that the iterator i is\ngreater than zero. Let's fix this by adding a check.", "A vulnerability was found in the Linux kernel's MMC core subsystem. This issue involves improper handling of array indexing, which could lead to accessing array elements using negative indices, resulting in out-of-bounds memory access, system instability, or crashes."], "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-2024-35813", "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": "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": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35813\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35813\nhttps://lore.kernel.org/linux-cve-announce/2024051742-CVE-2024-35813-bdc9@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": "2025-07-12T16:01:30.833775+00:00", "updated": "2025-07-12T16:01:30.833838+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}