{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-42136",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-42136"
  ],
  "published": "2024-07-30T07:47:52Z",
  "summary": "cdrom: rearrange last_media_change check to avoid unintentional overflow",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncdrom: rearrange last_media_change check to avoid unintentional overflow\n\nWhen running syzkaller with the newly reintroduced signed integer wrap\nsanitizer we encounter this splat:\n\n[  366.015950] UBSAN: signed-integer-overflow in ../drivers/cdrom/cdrom.c:2361:33\n[  366.021089] -9223372036854775808 - 346321 cannot be represented in type '__s64' (aka 'long long')\n[  366.025894] program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO\n[  366.027502] CPU: 5 PID: 28472 Comm: syz-executor.7 Not tainted 6.8.0-rc2-00035-gb3ef86b5a957 #1\n[  366.027512] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[  366.027518] Call Trace:\n[  366.027523]  <TASK>\n[  366.027533]  dump_stack_lvl+0x93/0xd0\n[  366.027899]  handle_overflow+0x171/0x1b0\n[  366.038787] ata1.00: invalid multi_count 32 ignored\n[  366.043924]  cdrom_ioctl+0x2c3f/0x2d10\n[  366.063932]  ? __pm_runtime_resume+0xe6/0x130\n[  366.071923]  sr_block_ioctl+0x15d/0x1d0\n[  366.074624]  ? __pfx_sr_block_ioctl+0x10/0x10\n[  366.077642]  blkdev_ioctl+0x419/0x500\n[  366.080231]  ? __pfx_blkdev_ioctl+0x10/0x10\n...\n\nHistorically, the signed integer overflow sanitizer did not work in the\nkernel due to its interaction with `-fwrapv` but this has since been\nchanged [1] in the newest version of Clang. It was re-enabled in the\nkernel with Commit 557f8c582a9ba8ab (\"ubsan: Reintroduce signed overflow\nsanitizer\").\n\nLet's rearrange the check to not perform any arithmetic, thus not\ntripping the sanitizer.",
  "affected": [
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        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-42136"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0c97527e916054acc4a46ffb02842988acb2e92b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3ee21e14c8c329168a0b66bab00ecd18f5d0dee3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e809bc112712da8f7e15822674c6562da6cdf24c"
    },
    {
      "type": "FIX",
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    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}