{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53525", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-01T11:39:39.407Z", "datePublished": "2025-10-01T11:46:11.188Z", "dateUpdated": "2026-05-23T15:29:20.818Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:29:20.818Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cma: Allow UD qp_type to join multicast only\n\nAs for multicast:\n- The SIDR is the only mode that makes sense;\n- Besides PS_UDP, other port spaces like PS_IB is also allowed, as it is\n UD compatible. In this case qkey also needs to be set [1].\n\nThis patch allows only UD qp_type to join multicast, and set qkey to\ndefault if it's not set, to fix an uninit-value error: the ib->rec.qkey\nfield is accessed without being initialized.\n\n=====================================================\nBUG: KMSAN: uninit-value in cma_set_qkey drivers/infiniband/core/cma.c:510 [inline]\nBUG: KMSAN: uninit-value in cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570\n cma_set_qkey drivers/infiniband/core/cma.c:510 [inline]\n cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570\n cma_iboe_join_multicast drivers/infiniband/core/cma.c:4782 [inline]\n rdma_join_multicast+0x2b83/0x30a0 drivers/infiniband/core/cma.c:4814\n ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479\n ucma_join_multicast+0x1e3/0x250 drivers/infiniband/core/ucma.c:1546\n ucma_write+0x639/0x6d0 drivers/infiniband/core/ucma.c:1732\n vfs_write+0x8ce/0x2030 fs/read_write.c:588\n ksys_write+0x28c/0x520 fs/read_write.c:643\n __do_sys_write fs/read_write.c:655 [inline]\n __se_sys_write fs/read_write.c:652 [inline]\n __ia32_sys_write+0xdb/0x120 fs/read_write.c:652\n do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]\n __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180\n do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205\n do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248\n entry_SYSENTER_compat_after_hwframe+0x4d/0x5c\n\nLocal variable ib.i created at:\ncma_iboe_join_multicast drivers/infiniband/core/cma.c:4737 [inline]\nrdma_join_multicast+0x586/0x30a0 drivers/infiniband/core/cma.c:4814\nucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479\n\nCPU: 0 PID: 29874 Comm: syz-executor.3 Not tainted 5.16.0-rc3-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n=====================================================\n\n[1] https://lore.kernel.org/linux-rdma/20220117183832.GD84788@nvidia.com/" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/core/cma.c" ], "versions": [ { "version": "b5de0c60cc30c2a3513c7188c73f3f29acc29234", "lessThan": "ae11498851423d6de27aebfe12a5ee85060ab1d5", "status": "affected", "versionType": "git" }, { "version": "b5de0c60cc30c2a3513c7188c73f3f29acc29234", "lessThan": "48e8e7851dc0b1584d83817a78fc7108c8904b54", "status": "affected", "versionType": "git" }, { "version": "b5de0c60cc30c2a3513c7188c73f3f29acc29234", "lessThan": "02eabb635bc64bd1e3a7cf887d6d182bffb64b99", "status": "affected", "versionType": "git" }, { "version": "b5de0c60cc30c2a3513c7188c73f3f29acc29234", "lessThan": "bb18b9dbac2bbdf7695e0bfaac4bf944ff7b207d", "status": "affected", "versionType": "git" }, { "version": "b5de0c60cc30c2a3513c7188c73f3f29acc29234", "lessThan": "58e84f6b3e84e46524b7e5a916b53c1ad798bc8f", "status": "affected", "versionType": "git" }, { "version": "b8d1adbff983be0b54f61c9a4169609d7fab0620", "status": "affected", "versionType": "git" }, { "version": "feed39c8d1282279fcb30612aa0e8d2635c11280", "status": "affected", "versionType": "git" }, { "version": "5.8.17", "lessThan": "5.9", "status": "affected", "versionType": "semver" }, { "version": "5.9.2", "lessThan": "5.10", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/core/cma.c" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.178", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.108", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.25", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.12", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "5.10", "versionEndExcluding": "5.10.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.108" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.25" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.2.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.17" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ae11498851423d6de27aebfe12a5ee85060ab1d5" }, { "url": "https://git.kernel.org/stable/c/48e8e7851dc0b1584d83817a78fc7108c8904b54" }, { "url": "https://git.kernel.org/stable/c/02eabb635bc64bd1e3a7cf887d6d182bffb64b99" }, { "url": "https://git.kernel.org/stable/c/bb18b9dbac2bbdf7695e0bfaac4bf944ff7b207d" }, { "url": "https://git.kernel.org/stable/c/58e84f6b3e84e46524b7e5a916b53c1ad798bc8f" } ], "title": "RDMA/cma: Allow UD qp_type to join multicast only", "x_generator": { "engine": "bippy-1.2.0" } } } }