CVE-2026-90124 (GCVE-0-2026-90124)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-09-17 16:06
VLAI
Title
irqchip/renesas-rzg2l: Fix loss of interrupt
Summary
In the Linux kernel, the following vulnerability has been resolved: irqchip/renesas-rzg2l: Fix loss of interrupt rzg2l_clear_irq_int() and rzg2l_clear_tint_int() perform a read-modify-write on the ISCR/TSCR status registers to clear the bit for the interrupt just handled. Since these registers are write-0-to-clear per bit, this is racy: If another interrupt's status bit gets set between the read and the write, that bit is written back as 0 by the software-constructed value, clearing an interrupt that hasn't been serviced yet and losing it. This can be reproduced by triggering multiple interrupts at once, e.g.: gpioset -c gpiochip0 355=0 353=0 328=0 352=0 Fix this by writing back only the bit being cleared, with all other bits set to 1, instead of read-modify-writing the whole register. Since 1-bits are left unchanged by hardware, concurrently-set status bits for other interrupts are preserved.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3fed09559cd8be79568d368ce02bf7f2d56259b6 , < c043591f03a8111f7d306b8122c444a949486269 (git)
Affected: 3fed09559cd8be79568d368ce02bf7f2d56259b6 , < b5ba8b861b5d833394bd23df3f4b59883ef18c88 (git)
Affected: 3fed09559cd8be79568d368ce02bf7f2d56259b6 , < 3791e242ec2e5a5cd9e010a75ed1125d0e84d394 (git)
Affected: 3fed09559cd8be79568d368ce02bf7f2d56259b6 , < 38c6831fefde0ff89f8d2dcb924f957a89dec414 (git)
Affected: 3fed09559cd8be79568d368ce02bf7f2d56259b6 , < dbecbe23dc606c4af68b4591a41124186f5c1802 (git)
Affected: 3fed09559cd8be79568d368ce02bf7f2d56259b6 , < 50b10bd0c2d721ad38abd1abe3acdefb6caa0944 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/irqchip/irq-renesas-rzg2l.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c043591f03a8111f7d306b8122c444a949486269",
              "status": "affected",
              "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
              "versionType": "git"
            },
            {
              "lessThan": "b5ba8b861b5d833394bd23df3f4b59883ef18c88",
              "status": "affected",
              "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
              "versionType": "git"
            },
            {
              "lessThan": "3791e242ec2e5a5cd9e010a75ed1125d0e84d394",
              "status": "affected",
              "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
              "versionType": "git"
            },
            {
              "lessThan": "38c6831fefde0ff89f8d2dcb924f957a89dec414",
              "status": "affected",
              "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
              "versionType": "git"
            },
            {
              "lessThan": "dbecbe23dc606c4af68b4591a41124186f5c1802",
              "status": "affected",
              "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
              "versionType": "git"
            },
            {
              "lessThan": "50b10bd0c2d721ad38abd1abe3acdefb6caa0944",
              "status": "affected",
              "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/irqchip/irq-renesas-rzg2l.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s 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\u0027t 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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:06:27.254Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c043591f03a8111f7d306b8122c444a949486269"
        },
        {
          "url": "https://git.kernel.org/stable/c/b5ba8b861b5d833394bd23df3f4b59883ef18c88"
        },
        {
          "url": "https://git.kernel.org/stable/c/3791e242ec2e5a5cd9e010a75ed1125d0e84d394"
        },
        {
          "url": "https://git.kernel.org/stable/c/38c6831fefde0ff89f8d2dcb924f957a89dec414"
        },
        {
          "url": "https://git.kernel.org/stable/c/dbecbe23dc606c4af68b4591a41124186f5c1802"
        },
        {
          "url": "https://git.kernel.org/stable/c/50b10bd0c2d721ad38abd1abe3acdefb6caa0944"
        }
      ],
      "title": "irqchip/renesas-rzg2l: Fix loss of interrupt",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90124",
    "datePublished": "2026-09-17T16:06:27.254Z",
    "dateReserved": "2026-09-11T19:38:34.788Z",
    "dateUpdated": "2026-09-17T16:06:27.254Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-90124",
      "date": "2026-09-25",
      "epss": "0.00206",
      "percentile": "0.094"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-24T01:21:07.000Z",
      "cve": "CVE-2026-90124",
      "id": "msrc_CVE-2026-90124",
      "initial_release_date": "2026-09-19T01:07:23.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "irqchip/renesas-rzg2l: Fix loss of interrupt",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90124.json",
      "version": "4"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/irqchip/irq-renesas-rzg2l.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "c043591f03a8111f7d306b8122c444a949486269",
                    "status": "affected",
                    "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b5ba8b861b5d833394bd23df3f4b59883ef18c88",
                    "status": "affected",
                    "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3791e242ec2e5a5cd9e010a75ed1125d0e84d394",
                    "status": "affected",
                    "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "38c6831fefde0ff89f8d2dcb924f957a89dec414",
                    "status": "affected",
                    "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "dbecbe23dc606c4af68b4591a41124186f5c1802",
                    "status": "affected",
                    "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "50b10bd0c2d721ad38abd1abe3acdefb6caa0944",
                    "status": "affected",
                    "version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/irqchip/irq-renesas-rzg2l.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.0"
                  },
                  {
                    "lessThan": "6.0",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.188",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.157",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.110",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.52",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3-rc1",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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\u0027s 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\u0027t 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."
          }
        ],
        "id": "CVE-2026-90124",
        "lastModified": "2026-09-17T17:17:04.650",
        "metrics": {},
        "published": "2026-09-17T17:17:04.650",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3791e242ec2e5a5cd9e010a75ed1125d0e84d394"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/38c6831fefde0ff89f8d2dcb924f957a89dec414"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/50b10bd0c2d721ad38abd1abe3acdefb6caa0944"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b5ba8b861b5d833394bd23df3f4b59883ef18c88"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c043591f03a8111f7d306b8122c444a949486269"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/dbecbe23dc606c4af68b4591a41124186f5c1802"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.