{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-90124",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-90124"
  ],
  "published": "2026-09-17T16:10:40Z",
  "summary": "irqchip/renesas-rzg2l: Fix loss of interrupt",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/renesas-rzg2l: Fix loss of interrupt\n\nrzg2l_clear_irq_int() and rzg2l_clear_tint_int() perform a\nread-modify-write on the ISCR/TSCR status registers to clear the bit\nfor the interrupt just handled. Since these registers are\nwrite-0-to-clear per bit, this is racy:\n\nIf another interrupt's status bit gets set between the read and the write,\nthat bit is written back as 0 by the software-constructed value, clearing\nan interrupt that hasn't been serviced yet and losing it.\n\nThis can be reproduced by triggering multiple interrupts at once, e.g.:\n\n  gpioset -c gpiochip0 355=0 353=0 328=0 352=0\n\nFix this by writing back only the bit being cleared, with all other bits\nset to 1, instead of read-modify-writing the whole register.  Since 1-bits\nare left unchanged by hardware, concurrently-set status bits for other\ninterrupts are preserved.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-90124"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c043591f03a8111f7d306b8122c444a949486269"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b5ba8b861b5d833394bd23df3f4b59883ef18c88"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3791e242ec2e5a5cd9e010a75ed1125d0e84d394"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/38c6831fefde0ff89f8d2dcb924f957a89dec414"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dbecbe23dc606c4af68b4591a41124186f5c1802"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/50b10bd0c2d721ad38abd1abe3acdefb6caa0944"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-17T16:10:40Z"
  }
}