{"id":"CVE-2026-53371","state":"PUBLISHED","title":"RDMA/ionic: bound node_desc sysfs read with %.64s","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ionic: bound node_desc sysfs read with %.64s\n\nnode_desc[64] in struct ib_device is not guaranteed to be NUL-\nterminated. The core IB sysfs handler uses \"%.64s\" for exactly this\nreason (drivers/infiniband/core/sysfs.c:1307), since node_desc_store()\nperforms a raw memcpy of up to IB_DEVICE_NODE_DESC_MAX bytes with no NUL\ntermination:\n\n  memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));\n\nIf exactly 64 bytes are written via the node_desc sysfs file, the array\ncontains no NUL byte. The ionic hca_type_show() handler uses unbounded\n\"%s\" and will read past the end of node_desc into adjacent fields of\nstruct ib_device until it encounters a NUL.\n\nionic supports IB_DEVICE_MODIFY_NODE_DESC, so this is triggerable by\nuserspace.\n\nMatch the core handler and bound the format specifier.","publishedAt":"2026-07-19T09:10:31.706Z","updatedAt":"2026-07-19T09:10:31.706Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2075bbe8ef03914aa2211035eec45d1d3a5c4ff2","status":"affected","lessThan":"61df14f306f153bffa2f3c74a94ff5a85c99fa39","versionType":"git"},{"version":"2075bbe8ef03914aa2211035eec45d1d3a5c4ff2","status":"affected","lessThan":"a3e9372203afde2c62576356bb9a17890bc7fd6c","versionType":"git"},{"version":"2075bbe8ef03914aa2211035eec45d1d3a5c4ff2","status":"affected","lessThan":"654a27f25530d052eeedf086e6c3e2d585c203bd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/ionic/ionic_ibdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/ionic/ionic_ibdev.c"]}],"references":["https://git.kernel.org/stable/c/61df14f306f153bffa2f3c74a94ff5a85c99fa39","https://git.kernel.org/stable/c/a3e9372203afde2c62576356bb9a17890bc7fd6c","https://git.kernel.org/stable/c/654a27f25530d052eeedf086e6c3e2d585c203bd"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53371.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53371","state":"PUBLISHED","datePublished":"2026-07-19T09:10:31.706Z","dateUpdated":"2026-07-19T09:10:31.706Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.401Z"},"containers":{"cna":{"title":"RDMA/ionic: bound node_desc sysfs read with %.64s","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ionic: bound node_desc sysfs read with %.64s\n\nnode_desc[64] in struct ib_device is not guaranteed to be NUL-\nterminated. The core IB sysfs handler uses \"%.64s\" for exactly this\nreason (drivers/infiniband/core/sysfs.c:1307), since node_desc_store()\nperforms a raw memcpy of up to IB_DEVICE_NODE_DESC_MAX bytes with no NUL\ntermination:\n\n  memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));\n\nIf exactly 64 bytes are written via the node_desc sysfs file, the array\ncontains no NUL byte. The ionic hca_type_show() handler uses unbounded\n\"%s\" and will read past the end of node_desc into adjacent fields of\nstruct ib_device until it encounters a NUL.\n\nionic supports IB_DEVICE_MODIFY_NODE_DESC, so this is triggerable by\nuserspace.\n\nMatch the core handler and bound the format specifier."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2075bbe8ef03914aa2211035eec45d1d3a5c4ff2","status":"affected","lessThan":"61df14f306f153bffa2f3c74a94ff5a85c99fa39","versionType":"git"},{"version":"2075bbe8ef03914aa2211035eec45d1d3a5c4ff2","status":"affected","lessThan":"a3e9372203afde2c62576356bb9a17890bc7fd6c","versionType":"git"},{"version":"2075bbe8ef03914aa2211035eec45d1d3a5c4ff2","status":"affected","lessThan":"654a27f25530d052eeedf086e6c3e2d585c203bd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/ionic/ionic_ibdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/ionic/ionic_ibdev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/61df14f306f153bffa2f3c74a94ff5a85c99fa39"},{"url":"https://git.kernel.org/stable/c/a3e9372203afde2c62576356bb9a17890bc7fd6c"},{"url":"https://git.kernel.org/stable/c/654a27f25530d052eeedf086e6c3e2d585c203bd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T09:10:31.706Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}