{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-90307", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.800Z", "datePublished": "2026-09-17T16:08:29.045Z", "dateUpdated": "2026-10-19T09:01:24.980Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:01:24.980Z" }, "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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/ulp/srp/ib_srp.c" ], "versions": [ { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "3f7fdf561f1ec3b523c39708df00bd808671668d", "status": "affected", "versionType": "git" }, { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "138eb2f0ef02adfe6ad126afad5b54c56b5046ee", "status": "affected", "versionType": "git" }, { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7", "status": "affected", "versionType": "git" }, { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "0e7ba617514902501514d577647d866e670dad90", "status": "affected", "versionType": "git" }, { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "001adf2fe87d1ab677c014a97467bbea5153ae5f", "status": "affected", "versionType": "git" }, { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cd", "status": "affected", "versionType": "git" }, { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "fa1b33fdab3e79dce83721ead3220200a2dbec22", "status": "affected", "versionType": "git" }, { "version": "bb12588a38e6db85e01dceadff7bc161fc92e7d2", "lessThan": "961ac0f0c5e414abdd6b33fae84b311d9fde0bd0", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/ulp/srp/ib_srp.c" ], "versions": [ { "version": "2.6.37", "status": "affected" }, { "version": "0", "lessThan": "2.6.37", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "5.10.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "5.15.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.1.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.18.52" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.2.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.3" } ] } ] } ], "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" } } } }