CVE-2024-35813 (GCVE-0-2024-35813)
Vulnerability from cvelistv5
Published
2024-05-17 13:23
Modified
2026-08-05 11:30
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: mmc: core: Avoid negative index with array access Commit 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu") assigns prev_idata = idatas[i - 1], but doesn't check that the iterator i is greater than zero. Let's fix this by adding a check.
References
Impacted products
Vendor Product Version
Linux Linux Version: f49f9e802785291149bdc9c824414de4604226b4
Version: 59020bf0999ff7da8aedcd00ef8f0d75d93b6d20
Version: 50b8b7a22e90bab9f1949b64a88ff17ab10913ec
Version: c4edcd134bb72b3b0acc884612d624e48c9d057f
Version: 1653a8102868264f3488c298a9f20af2add9a288
Version: eed9119f8f8e8fbf225c08abdbb58597fba807e0
Version: 4d0c8d0aef6355660b6775d57ccd5d4ea2e15802
Version: 4d0c8d0aef6355660b6775d57ccd5d4ea2e15802
Version: 5.4.269   ≤
Version: 5.10.210   ≤
Version: 5.15.149   ≤
Version: 6.1.76   ≤
Version: 6.6.15   ≤
Version: 6.7.3   ≤
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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\u0027s 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-\u003eic.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(\u0026prev_idata-\u003eic.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-\u003eic.arg` and write at `prev_idata-\u003eic.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\u0027t check that the iterator i is\\ngreater than zero. Let\u0027s fix this by adding a check.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.274\", \"versionStartIncluding\": \"5.4.269\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.215\", \"versionStartIncluding\": \"5.10.210\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.154\", \"versionStartIncluding\": \"5.15.149\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.84\", \"versionStartIncluding\": \"6.1.76\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.24\", \"versionStartIncluding\": \"6.6.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.12\", \"versionStartIncluding\": \"6.7.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.3\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"6.8\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:30:06.940Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35813\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:30:06.940Z\", \"dateReserved\": \"2024-05-17T12:19:12.343Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-17T13:23:18.902Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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