{
  "cveId": "CVE-2024-42063",
  "url": "https://patchblox.com/security/cve/CVE-2024-42063",
  "summary": "CVE-2024-42063 is fixed in 22 products on 1 platform, first by DEBIAN-CVE-2024-42063, released July 29, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  bpf: Mark bpf prog stack with kmsan_unposion_mem...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bpf: Mark bpf prog stack with kmsan_unposion_memory in interpreter mode  syzbot reported uninit memory usages during map_{lookup,delete}_elem.  ========== BUG: KMSAN: uninit-value in __dev_map_lookup_elem kernel/bpf/devmap.c:441 [inline] BUG: KMSAN: uninit-value in dev_map_lookup_elem\u002B0xf3/0x170 kernel/bpf/devmap.c:796 __dev_map_lookup_elem kernel/bpf/devmap.c:441 [inline] dev_map_lookup_elem\u002B0xf3/0x170 kernel/bpf/devmap.c:796 ____bpf_map_lookup_elem kernel/bpf/helpers.c:42 [inline] bpf_map_lookup_elem\u002B0x5c/0x80 kernel/bpf/helpers.c:38 ___bpf_prog_run\u002B0x13fe/0xe0f0 kernel/bpf/core.c:1997 __bpf_prog_run256\u002B0xb5/0xe0 kernel/bpf/core.c:2237 ==========  The reproducer should be in the interpreter mode.  The C reproducer is trying to run the following bpf prog:      0: (18) r0 = 0x0     2: (18) r1 = map[id:49]     4: (b7) r8 = 16777216     5: (7b) *(u64 *)(r10 -8) = r8     6: (bf) r2 = r10     7: (07) r2 \u002B= -229             ^^^^^^^^^^      8: (b7) r3 = 8     9: (b7) r4 = 0    10: (85) call dev_map_lookup_elem#1543472    11: (95) exit  It is due to the \u0022void *key\u0022 (r2) passed to the helper. bpf allows uninit stack memory access for bpf prog with the right privileges. This patch uses kmsan_unpoison_memory() to mark the stack as initialized.  This should address different syzbot reports on the uninit \u0022void *key\u0022 argument during map_{lookup,delete}_elem.",
  "published": "2024-07-29T16:15:06Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00222,
  "epssPercentile": 0.12925,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-headers",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-libbpf-static",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.1.97-104.177",
      "release": "amzn 2023",
      "fixedVersion": "1.0-0.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-modules-extra-common",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-tools-devel",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.98-1",
      "fix": "DEBIAN-CVE-2024-42063",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-42063",
      "released": "2024-07-29T16:15:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.9.8-1",
      "fix": "DEBIAN-CVE-2024-42063",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-42063",
      "released": "2024-07-29T16:15:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.9.8-1",
      "fix": "DEBIAN-CVE-2024-42063",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-42063",
      "released": "2024-07-29T16:15:06Z"
    },
    {
      "platform": "linux",
      "product": "perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "perf-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-perf",
      "release": "amzn 2023",
      "fixedVersion": "6.1.97-104.177.amzn2023",
      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    },
    {
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      "product": "python3-perf-debuginfo",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2024-714",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2024-714",
      "released": "2024-09-12T18:29:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}