{"id":"CVE-2026-90124","revision":"74a3dced1f95400f9e1cc6e2528865cf","records":[{"revision":"74a3dced1f95400f9e1cc6e2528865cf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90124","aliases":[],"title":"irqchip/renesas-rzg2l: Fix loss of interrupt","description":"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.","state":0,"publishedAt":"2026-09-17T16:06:27.254+00:00","modifiedAt":"2026-10-19T08:58:22.566+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/irqchip/irq-renesas-rzg2l.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3fed09559cd8be79568d368ce02bf7f2d56259b6\",\n                            \"lessThan\": \"c043591f03a8111f7d306b8122c444a949486269\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fed09559cd8be79568d368ce02bf7f2d56259b6\",\n                            \"lessThan\": \"b5ba8b861b5d833394bd23df3f4b59883ef18c88\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fed09559cd8be79568d368ce02bf7f2d56259b6\",\n                            \"lessThan\": \"3791e242ec2e5a5cd9e010a75ed1125d0e84d394\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fed09559cd8be79568d368ce02bf7f2d56259b6\",\n                            \"lessThan\": \"38c6831fefde0ff89f8d2dcb924f957a89dec414\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fed09559cd8be79568d368ce02bf7f2d56259b6\",\n                            \"lessThan\": \"dbecbe23dc606c4af68b4591a41124186f5c1802\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3fed09559cd8be79568d368ce02bf7f2d56259b6\",\n                            \"lessThan\": \"50b10bd0c2d721ad38abd1abe3acdefb6caa0944\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/irqchip/irq-renesas-rzg2l.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/c043591f03a8111f7d306b8122c444a949486269","https://git.kernel.org/stable/c/b5ba8b861b5d833394bd23df3f4b59883ef18c88","https://git.kernel.org/stable/c/3791e242ec2e5a5cd9e010a75ed1125d0e84d394","https://git.kernel.org/stable/c/38c6831fefde0ff89f8d2dcb924f957a89dec414","https://git.kernel.org/stable/c/dbecbe23dc606c4af68b4591a41124186f5c1802","https://git.kernel.org/stable/c/50b10bd0c2d721ad38abd1abe3acdefb6caa0944"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90124","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90124","identifiers":["CVE-2026-90124"]},"retained":false,"historicalAffected":[]}],"coverage":[]}