{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-52601",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2023-52601"
  ],
  "published": "2024-03-06T06:46:18Z",
  "summary": "jfs: fix array-index-out-of-bounds in dbAdjTree",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix array-index-out-of-bounds in dbAdjTree\n\nCurrently there is a bound check missing in the dbAdjTree while\naccessing the dmt_stree. To add the required check added the bool is_ctl\nwhich is required to determine the size as suggest in the following\ncommit.\nhttps://lore.kernel.org/linux-kernel-mentees/f9475918-2186-49b8-b801-6f0f9e75f4fa@oracle.com/",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "affected": [
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        "name": "linux"
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        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1"
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      "ecosystem_specific": {
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-52601"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3d3898b4d72c677d47fe3cb554449f2df5c12555"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3f8217c323fd6ecd6829a0c3ae7ac3f14eac368e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2037cb9d95f1741885f7daf50e8a028c4ade5317"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8393c80cce45f40c1256d72e21ad351b3650c57e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/70780914cb57e2ba711e0ac1b677aaaa75103603"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2e16a1389b5a7983b45cb2aa20b0e3f0ee364d6c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fc67a2e18f4c4e3f07e9f9ae463da24530470e73"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/74ecdda68242b174920fe7c6133a856fb7d8559b"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:24:39Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - Exploitation requires mounting and operating on a crafted JFS image via local syscalls; JFS is a block filesystem (FS_REQUIRES_DEV, no FS_USERNS_MOUNT) and is not reachable from network packet processing.\nAC:L - A malicious image with corrupted dmap tree metadata (e.g. leafidx) reliably drives dbAdjTree past the real TREESIZE bound during ordinary free/alloc paths; success does not depend on races or uncontrolled system state.\nPR:L - After the crafted filesystem is mounted, an unprivileged local user with access to it can trigger the vulnerable free path through normal file operations (unlink/truncate/write); scoring PR:H would understate this reachable local-user scenario.\nUI:N - Exploitation is completed by the attacker's own filesystem operations on the mounted image; no additional interactive victim action is required at trigger time.\nS:U - Impact is confined to the host kernel's discretionary authority (local privilege escalation / kernel memory corruption); it does not cross a VM, IOMMU, or other security boundary.\nC:H - The bug performs an out-of-bounds read of dmt_stree before writing, and kernel OOB memory corruption of this form can be leveraged for arbitrary information disclosure.\nI:H - dbAdjTree performs an out-of-bounds write into adjacent kernel memory within the dmap metapage, which is exploitable memory corruption capable of control-flow hijacking or arbitrary write primitives.\nA:H - The OOB access can crash the kernel (UBSAN/KASAN reports and panic_on_warn in reproducers; related dbAdjTree reports include slab OOB/UAF), causing full availability loss."
    }
  }
}
