GCVE-1988-2026-0379

{
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        {
          "product": "unknown",
          "vendor": "unknown",
          "versions": [
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              "version": "unknown"
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          "value": "-----BEGIN SECURITY ADVISORY-----\n\nTitle: Multiple Integer Overflows in U-Boot Filesystem Handling\nAuthor: Timo Preißl <t.preissl () proton me>\nDate: 2026-02-11\nCVEs: CVE-2025-70290, CVE-2025-70291, CVE-2025-70292, CVE-2025-70293\nAffected: Denx U-Boot <= v2026.01-rc4\nFixed in: v2026.04-rc1 (commit adccdb2)\n\n== Overview ==\n\nMultiple integer overflow vulnerabilities were discovered in the U-Boot\nbootloader's filesystem handling code and command-line interface. These\nflaws can lead to heap memory under-allocation followed by heap-based\nbuffer overflows, potentially allowing Arbitrary Code Execution (ACE)\nin the pre-boot environment.\n\n== Vulnerability Details ==\n\n--- CVE-2025-70290: ZFS Metadata Integer Overflow ---\n\nComponent: fs/zfs/zfs.c, function zfs_nvlist_lookup_nvlist\nImpact: A crafted ZFS filesystem image with malformed on-disk metadata\ncan trigger an integer overflow during the size calculation\npassed to calloc(), resulting in an undersized allocation and\nsubsequent out-of-bounds memory access.\nFix: Validation of allocation size using __builtin_add_overflow.\n\n--- CVE-2025-70291: Heap Buffer Overflow in do_mv Command ---\n\nComponent: fs/fs.c, function do_mv\nImpact: Missing length checks in the directory move command allow an\ninteger overflow during string length addition. An attacker\nwith U-Boot shell access can trigger an under-allocation,\nresulting in a heap buffer overflow via strcpy().\nFix: Safe addition of string lengths using compiler intrinsics.\n\n--- CVE-2025-70292: SquashFS Integer Overflow ---\n\nComponent: fs/squashfs/sqfs.c, function sqfs_concat_tokens\nImpact: Manipulated token lists trigger an overflow in\nsqfs_get_tokens_length(), causing heap under-allocation\nsubsequently overflown by strcpy().\nFix: Validation of total token length before allocation.\n\n--- CVE-2025-70293: EXT4 Block Group Descriptor Table Integer Overflow ---\n\nComponent: fs/ext4/ext4_write.c, function ext4fs_get_bgdtable\nImpact: An integer overflow in the block group descriptor table size\ncalculation results in an undersized buffer being passed to\nmemcpy(), causing memory corruption.\nFix: Guarded multiplication of block group count and descriptor size.\n\n== Patch ==\n\nAll issues are fixed in the U-Boot master branch.\n\nCommit: adccdb2f605a6e8e046712398712398123\n\"fix integer overflows in filesystem code\"\n\nhttps://source.denx.de/u-boot/u-boot/-/commit/adccdb2\n\n== Timeline ==\n\nPatch series submitted to upstream mailing list:\nhttps://lore.kernel.org/u-boot/20251231100831.119142-1-t.preissl () proton me/T/\n\nFix merged: v2026.04-rc1\n-----END SECURITY ADVISORY-----\n_______________________________________________\nSent through the Full Disclosure mailing list\nhttps://nmap.org/mailman/listinfo/fulldisclosure\nWeb Archives & RSS: https://seclists.org/fulldisclosure/"
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          "url": "https://lore.kernel.org/u-boot/20251231100831.119142-1-t.preissl"
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          "url": "https://source.denx.de/u-boot/u-boot/-/commit/adccdb2"
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        "discovery": "EXTERNAL"
      },
      "title": "[ADVISORY] Multiple Integer Overflows in U-Boot Filesystem Parsing (CVE-2025-70290 through CVE-2025-70293)",
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