{"id":"CVE-2026-93246","state":"PUBLISHED","title":"octeontx2-af: fix out-of-bounds read setting MSI-X irq affinity","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix out-of-bounds read setting MSI-X irq affinity\n\nrvu_register_interrupts() walks every MSI-X vector and uses strstr()\nto match \"Mbox\" or \"FLR\" in irq_name before pinning those interrupts\nto CPU 0. irq_name is a per-vector NAME_SIZE buffer, but not every\nslot is populated before this loop runs. strstr() keeps scanning until\nit finds a NUL terminator, so an uninitialized slot can trigger a KASAN\nslab-out-of-bounds read at boot when debug options are enabled.\n\nUse strnstr() with NAME_SIZE to bound the search within each vector's\nname buffer.","publishedAt":"2026-09-24T15:51:03.587Z","updatedAt":"2026-10-19T09:07:58.955Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4e527f1e5c155ce28164ba34cad47b635d16f827","status":"affected","lessThan":"2f460aa0211e97c011ef0cfe5016f8f2a2ed059b","versionType":"git"},{"version":"4e527f1e5c155ce28164ba34cad47b635d16f827","status":"affected","lessThan":"4d5df98369c5f45710b786499f8bd7ffc3196433","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/af/rvu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/af/rvu.c"]}],"references":["https://git.kernel.org/stable/c/2f460aa0211e97c011ef0cfe5016f8f2a2ed059b","https://git.kernel.org/stable/c/4d5df98369c5f45710b786499f8bd7ffc3196433"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93246.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93246","state":"PUBLISHED","datePublished":"2026-09-24T15:51:03.587Z","dateUpdated":"2026-10-19T09:07:58.955Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.096Z"},"containers":{"cna":{"title":"octeontx2-af: fix out-of-bounds read setting MSI-X irq affinity","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix out-of-bounds read setting MSI-X irq affinity\n\nrvu_register_interrupts() walks every MSI-X vector and uses strstr()\nto match \"Mbox\" or \"FLR\" in irq_name before pinning those interrupts\nto CPU 0. irq_name is a per-vector NAME_SIZE buffer, but not every\nslot is populated before this loop runs. strstr() keeps scanning until\nit finds a NUL terminator, so an uninitialized slot can trigger a KASAN\nslab-out-of-bounds read at boot when debug options are enabled.\n\nUse strnstr() with NAME_SIZE to bound the search within each vector's\nname buffer."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4e527f1e5c155ce28164ba34cad47b635d16f827","status":"affected","lessThan":"2f460aa0211e97c011ef0cfe5016f8f2a2ed059b","versionType":"git"},{"version":"4e527f1e5c155ce28164ba34cad47b635d16f827","status":"affected","lessThan":"4d5df98369c5f45710b786499f8bd7ffc3196433","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/af/rvu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/octeontx2/af/rvu.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/2f460aa0211e97c011ef0cfe5016f8f2a2ed059b"},{"url":"https://git.kernel.org/stable/c/4d5df98369c5f45710b786499f8bd7ffc3196433"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:07:58.955Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}