{"id":"CVE-2026-97503","state":"PUBLISHED","title":"genirq/proc: Size interrupt directory names for 10-digit interrupt numbers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngenirq/proc: Size interrupt directory names for 10-digit interrupt numbers\n\n/proc/irq/<n>/ directory names are built in `char name[10]` buffers\nwith `sprintf(name, \"%u\", irq)`.\n\nTen-digit IRQ numbers already need 11 bytes including the trailing NUL, and\ncurrent sparse-IRQ configurations allow interrupt numbers in that range.\n\nSize the temporary name buffer for the current decimal form and switch\nto bounded formatting when creating or removing the proc entry.","publishedAt":"2026-09-24T16:04:50.412Z","updatedAt":"2026-10-21T12:52:57.377Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"a8adf64fe7fd5d7c476769a043ee56eda7b775ce","versionType":"git"},{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"488bcd7fd3e9a2ad647b71b505a269fdb28753c4","versionType":"git"},{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"d4b22fbae70037299e96539c330e4a1054b28a91","versionType":"git"},{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"c2c7983c93f5d86962318be7e7298f1bc3feb1a6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/irq/proc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/irq/proc.c"]}],"references":["https://git.kernel.org/stable/c/a8adf64fe7fd5d7c476769a043ee56eda7b775ce","https://git.kernel.org/stable/c/488bcd7fd3e9a2ad647b71b505a269fdb28753c4","https://git.kernel.org/stable/c/d4b22fbae70037299e96539c330e4a1054b28a91","https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97503.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97503","state":"PUBLISHED","datePublished":"2026-09-24T16:04:50.412Z","dateUpdated":"2026-10-21T12:52:57.377Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-24T16:01:01.151Z"},"containers":{"cna":{"title":"genirq/proc: Size interrupt directory names for 10-digit interrupt numbers","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ngenirq/proc: Size interrupt directory names for 10-digit interrupt numbers\n\n/proc/irq/<n>/ directory names are built in `char name[10]` buffers\nwith `sprintf(name, \"%u\", irq)`.\n\nTen-digit IRQ numbers already need 11 bytes including the trailing NUL, and\ncurrent sparse-IRQ configurations allow interrupt numbers in that range.\n\nSize the temporary name buffer for the current decimal form and switch\nto bounded formatting when creating or removing the proc entry."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"a8adf64fe7fd5d7c476769a043ee56eda7b775ce","versionType":"git"},{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"488bcd7fd3e9a2ad647b71b505a269fdb28753c4","versionType":"git"},{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"d4b22fbae70037299e96539c330e4a1054b28a91","versionType":"git"},{"version":"721255b9826bd11c7a38b585905fc2dd0fb94e52","status":"affected","lessThan":"c2c7983c93f5d86962318be7e7298f1bc3feb1a6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/irq/proc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/irq/proc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a8adf64fe7fd5d7c476769a043ee56eda7b775ce"},{"url":"https://git.kernel.org/stable/c/488bcd7fd3e9a2ad647b71b505a269fdb28753c4"},{"url":"https://git.kernel.org/stable/c/d4b22fbae70037299e96539c330e4a1054b28a91"},{"url":"https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:52:57.377Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}