{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50129", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-06-18T10:57:27.418Z", "datePublished": "2025-06-18T11:02:55.576Z", "dateUpdated": "2026-08-05T08:57:28.156Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:57:28.156Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srpt: Fix a use-after-free\n\nChange the LIO port members inside struct srpt_port from regular members\ninto pointers. Allocate the LIO port data structures from inside\nsrpt_make_tport() and free these from inside srpt_make_tport(). Keep\nstruct srpt_device as long as either an RDMA port or a LIO target port is\nassociated with it. This patch decouples the lifetime of struct srpt_port\n(controlled by the RDMA core) and struct srpt_port_id (controlled by LIO).\nThis patch fixes the following KASAN complaint:\n\n BUG: KASAN: use-after-free in srpt_enable_tpg+0x31/0x70 [ib_srpt]\n Read of size 8 at addr ffff888141cc34b8 by task check/5093\n\n Call Trace:\n \n show_stack+0x4e/0x53\n dump_stack_lvl+0x51/0x66\n print_address_description.constprop.0.cold+0xea/0x41e\n print_report.cold+0x90/0x205\n kasan_report+0xb9/0xf0\n __asan_load8+0x69/0x90\n srpt_enable_tpg+0x31/0x70 [ib_srpt]\n target_fabric_tpg_base_enable_store+0xe2/0x140 [target_core_mod]\n configfs_write_iter+0x18b/0x210\n new_sync_write+0x1f2/0x2f0\n vfs_write+0x3e3/0x540\n ksys_write+0xbb/0x140\n __x64_sys_write+0x42/0x50\n do_syscall_64+0x34/0x80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n " } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The UAF is reached through local configfs operations on the LIO/srpt target hierarchy (enable store as in the KASAN report, and world-readable TPG attrib show handlers that call srpt_tpg_to_sport), not via remote SRP/RDMA connection processing.\nAC:H - The use-after-free only appears after srpt_remove_one frees struct srpt_port (RDMA device unbind/hot-remove/module teardown) while LIO configfs still holds references into the embedded srpt_port_id/se_wwn; an unprivileged attacker cannot induce that RDMA lifetime transition.\nPR:L - After the dangling state exists, CONFIGFS_ATTR show handlers such as srpt_tpg_attrib_*_show are mode S_IRUGO and dereference the freed sport via wwn->priv, so a normal unprivileged local user can trigger the UAF by reading those attributes without root or init-namespace capabilities.\nUI:N - Exploitation is just reading or writing the already-present configfs attributes; no separate victim action such as mounting a filesystem or opening a user-supplied file is required.\nS:U - This is a standard in-kernel use-after-free within the host kernel’s authority and does not cross a VM, IOMMU, or other security-authority boundary.\nC:H - Use-after-free of srpt_port/srpt_port_id lets an attacker reuse the freed object and obtain arbitrary kernel read primitives, so confidentiality impact is High under kernel UAF guidance.\nI:H - The same heap UAF is exploitable via spraying/reallocation for corruption of kernel objects and control-flow hijacking, so integrity impact is High.\nA:H - The demonstrated KASAN use-after-free in srpt_enable_tpg and equivalent dangling dereferences in attrib paths can oops/panic the kernel, so availability impact is High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/ulp/srpt/ib_srpt.c", "drivers/infiniband/ulp/srpt/ib_srpt.h" ], "versions": [ { "version": "a42d985bd5b234da8b61347a78dc3057bf7bb94d", "lessThan": "de95b52d9aabc979166aba81ccbe623aaf9c16a1", "status": "affected", "versionType": "git" }, { "version": "a42d985bd5b234da8b61347a78dc3057bf7bb94d", "lessThan": "e60d7e2462bf57273563c4e00dbfa79ee973b9e2", "status": "affected", "versionType": "git" }, { "version": "a42d985bd5b234da8b61347a78dc3057bf7bb94d", "lessThan": "4ee8c39968a648d58b273582d4b021044a41ee5e", "status": "affected", "versionType": "git" }, { "version": "a42d985bd5b234da8b61347a78dc3057bf7bb94d", "lessThan": "388326bb1c32fcd09371c1d494af71471ef3a04b", "status": "affected", "versionType": "git" }, { "version": "a42d985bd5b234da8b61347a78dc3057bf7bb94d", "lessThan": "b5605148e6ce36bb21020d49010b617693933128", "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/srpt/ib_srpt.c", "drivers/infiniband/ulp/srpt/ib_srpt.h" ], "versions": [ { "version": "3.3", "status": "affected" }, { "version": "0", "lessThan": "3.3", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.137", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.61", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.18", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19.2", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0", "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": "3.3", "versionEndExcluding": "5.10.137" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "5.15.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "5.18.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "5.19.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/de95b52d9aabc979166aba81ccbe623aaf9c16a1" }, { "url": "https://git.kernel.org/stable/c/e60d7e2462bf57273563c4e00dbfa79ee973b9e2" }, { "url": "https://git.kernel.org/stable/c/4ee8c39968a648d58b273582d4b021044a41ee5e" }, { "url": "https://git.kernel.org/stable/c/388326bb1c32fcd09371c1d494af71471ef3a04b" }, { "url": "https://git.kernel.org/stable/c/b5605148e6ce36bb21020d49010b617693933128" } ], "title": "RDMA/srpt: Fix a use-after-free", "x_generator": { "engine": "bippy-1.2.0" } } } }