{"api_version":"1","generated_at":"2026-10-26T06:59:29+00:00","cve":"CVE-2026-90307","urls":{"html":"https://cve.report/CVE-2026-90307","api":"https://cve.report/api/cve/CVE-2026-90307.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90307","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90307"},"summary":{"title":"RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ\n\nsrp_recv_done() passes wc->byte_len to srp_process_rsp(). It passes\nnothing to srp_process_cred_req() and srp_process_aer_req(), which read\nfixed-size fields from the receive buffer without checking that those\nfields were received.\n\nThe buffer size is max_ti_iu_len, which comes from the login response\nand is not validated. A target that advertises 8 and then sends an\n8-byte SRP_CRED_REQ makes the initiator read req->tag from beyond the\nend of the buffer. req->tag is copied into the SRP_CRED_RSP and sent\nback, so those bytes reach the target. SRP_AER_REQ behaves the same way\nand also reads req->lun.\n\nThe leak is 8 bytes per response. max_ti_iu_len also decides which slab\ncache the buffer comes from. With 8 the buffer is a kmalloc-8 object and\nthe read is entirely outside it:\n\n  BUG: KASAN: slab-out-of-bounds in srp_recv_done+0x172b/0x1aa0\n  Read of size 8 at addr ffff888104714da8 by task kworker/u8:3/50\n   which belongs to the cache kmalloc-8 of size 8\n  The buggy address is located 0 bytes to the right of\n   allocated 8-byte region [ffff888104714da0, ffff888104714da8)\n\nWithout KASAN the returned bytes are whatever is next in the slab. One\nrun returned \".strtab\".\n\nrsp->data[3] in srp_process_rsp() has the same problem: only\nresp_data_len is checked before it is read.\n\nDrop a request that is shorter than the structure being parsed, and\ncheck byte_len before the tsk_mgmt read.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:28","updated_at":"2026-10-19 09:19:24"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7","name":"https://git.kernel.org/stable/c/3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/138eb2f0ef02adfe6ad126afad5b54c56b5046ee","name":"https://git.kernel.org/stable/c/138eb2f0ef02adfe6ad126afad5b54c56b5046ee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fa1b33fdab3e79dce83721ead3220200a2dbec22","name":"https://git.kernel.org/stable/c/fa1b33fdab3e79dce83721ead3220200a2dbec22","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0e7ba617514902501514d577647d866e670dad90","name":"https://git.kernel.org/stable/c/0e7ba617514902501514d577647d866e670dad90","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd","name":"https://git.kernel.org/stable/c/dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/961ac0f0c5e414abdd6b33fae84b311d9fde0bd0","name":"https://git.kernel.org/stable/c/961ac0f0c5e414abdd6b33fae84b311d9fde0bd0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/001adf2fe87d1ab677c014a97467bbea5153ae5f","name":"https://git.kernel.org/stable/c/001adf2fe87d1ab677c014a97467bbea5153ae5f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3f7fdf561f1ec3b523c39708df00bd808671668d","name":"https://git.kernel.org/stable/c/3f7fdf561f1ec3b523c39708df00bd808671668d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90307","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90307","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bb12588a38e6db85e01dceadff7bc161fc92e7d2 3f7fdf561f1ec3b523c39708df00bd808671668d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bb12588a38e6db85e01dceadff7bc161fc92e7d2 138eb2f0ef02adfe6ad126afad5b54c56b5046ee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bb12588a38e6db85e01dceadff7bc161fc92e7d2 3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bb12588a38e6db85e01dceadff7bc161fc92e7d2 0e7ba617514902501514d577647d866e670dad90 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.221 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/infiniband/ulp/srp/ib_srp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3f7fdf561f1ec3b523c39708df00bd808671668d","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"},{"lessThan":"138eb2f0ef02adfe6ad126afad5b54c56b5046ee","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"},{"lessThan":"3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"},{"lessThan":"0e7ba617514902501514d577647d866e670dad90","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"},{"lessThan":"001adf2fe87d1ab677c014a97467bbea5153ae5f","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"},{"lessThan":"dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"},{"lessThan":"fa1b33fdab3e79dce83721ead3220200a2dbec22","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"},{"lessThan":"961ac0f0c5e414abdd6b33fae84b311d9fde0bd0","status":"affected","version":"bb12588a38e6db85e01dceadff7bc161fc92e7d2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/infiniband/ulp/srp/ib_srp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.37"},{"lessThan":"2.6.37","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.270","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.221","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","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.270","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"2.6.37","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"2.6.37","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ\n\nsrp_recv_done() passes wc->byte_len to srp_process_rsp(). It passes\nnothing to srp_process_cred_req() and srp_process_aer_req(), which read\nfixed-size fields from the receive buffer without checking that those\nfields were received.\n\nThe buffer size is max_ti_iu_len, which comes from the login response\nand is not validated. A target that advertises 8 and then sends an\n8-byte SRP_CRED_REQ makes the initiator read req->tag from beyond the\nend of the buffer. req->tag is copied into the SRP_CRED_RSP and sent\nback, so those bytes reach the target. SRP_AER_REQ behaves the same way\nand also reads req->lun.\n\nThe leak is 8 bytes per response. max_ti_iu_len also decides which slab\ncache the buffer comes from. With 8 the buffer is a kmalloc-8 object and\nthe read is entirely outside it:\n\n  BUG: KASAN: slab-out-of-bounds in srp_recv_done+0x172b/0x1aa0\n  Read of size 8 at addr ffff888104714da8 by task kworker/u8:3/50\n   which belongs to the cache kmalloc-8 of size 8\n  The buggy address is located 0 bytes to the right of\n   allocated 8-byte region [ffff888104714da0, ffff888104714da8)\n\nWithout KASAN the returned bytes are whatever is next in the slab. One\nrun returned \".strtab\".\n\nrsp->data[3] in srp_process_rsp() has the same problem: only\nresp_data_len is checked before it is read.\n\nDrop a request that is shorter than the structure being parsed, and\ncheck byte_len before the tsk_mgmt read."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:01:24.980Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3f7fdf561f1ec3b523c39708df00bd808671668d"},{"url":"https://git.kernel.org/stable/c/138eb2f0ef02adfe6ad126afad5b54c56b5046ee"},{"url":"https://git.kernel.org/stable/c/3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7"},{"url":"https://git.kernel.org/stable/c/0e7ba617514902501514d577647d866e670dad90"},{"url":"https://git.kernel.org/stable/c/001adf2fe87d1ab677c014a97467bbea5153ae5f"},{"url":"https://git.kernel.org/stable/c/dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd"},{"url":"https://git.kernel.org/stable/c/fa1b33fdab3e79dce83721ead3220200a2dbec22"},{"url":"https://git.kernel.org/stable/c/961ac0f0c5e414abdd6b33fae84b311d9fde0bd0"}],"title":"RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90307","datePublished":"2026-09-17T16:08:29.045Z","dateReserved":"2026-09-11T19:38:34.800Z","dateUpdated":"2026-10-19T09:01:24.980Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:28","lastModifiedDate":"2026-10-19 09:19:24","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90307","Ordinal":"1","Title":"RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ","CVE":"CVE-2026-90307","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90307","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ\n\nsrp_recv_done() passes wc->byte_len to srp_process_rsp(). It passes\nnothing to srp_process_cred_req() and srp_process_aer_req(), which read\nfixed-size fields from the receive buffer without checking that those\nfields were received.\n\nThe buffer size is max_ti_iu_len, which comes from the login response\nand is not validated. A target that advertises 8 and then sends an\n8-byte SRP_CRED_REQ makes the initiator read req->tag from beyond the\nend of the buffer. req->tag is copied into the SRP_CRED_RSP and sent\nback, so those bytes reach the target. SRP_AER_REQ behaves the same way\nand also reads req->lun.\n\nThe leak is 8 bytes per response. max_ti_iu_len also decides which slab\ncache the buffer comes from. With 8 the buffer is a kmalloc-8 object and\nthe read is entirely outside it:\n\n  BUG: KASAN: slab-out-of-bounds in srp_recv_done+0x172b/0x1aa0\n  Read of size 8 at addr ffff888104714da8 by task kworker/u8:3/50\n   which belongs to the cache kmalloc-8 of size 8\n  The buggy address is located 0 bytes to the right of\n   allocated 8-byte region [ffff888104714da0, ffff888104714da8)\n\nWithout KASAN the returned bytes are whatever is next in the slab. One\nrun returned \".strtab\".\n\nrsp->data[3] in srp_process_rsp() has the same problem: only\nresp_data_len is checked before it is read.\n\nDrop a request that is shorter than the structure being parsed, and\ncheck byte_len before the tsk_mgmt read.","Type":"Description","Title":"RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ"}]}}}