{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-22085", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.816Z", "datePublished": "2025-04-16T14:12:33.821Z", "dateUpdated": "2026-08-05T11:56:38.895Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:56:38.895Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix use-after-free when rename device name\n\nSyzbot reported a slab-use-after-free with the following call trace:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in nla_put+0xd3/0x150 lib/nlattr.c:1099\nRead of size 5 at addr ffff888140ea1c60 by task syz.0.988/10025\n\nCPU: 0 UID: 0 PID: 10025 Comm: syz.0.988\nNot tainted 6.14.0-rc4-syzkaller-00859-gf77f12010f67 #0\nHardware name: Google Compute Engine, BIOS Google 02/12/2025\nCall Trace:\n \n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:408 [inline]\n print_report+0x16e/0x5b0 mm/kasan/report.c:521\n kasan_report+0x143/0x180 mm/kasan/report.c:634\n kasan_check_range+0x282/0x290 mm/kasan/generic.c:189\n __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105\n nla_put+0xd3/0x150 lib/nlattr.c:1099\n nla_put_string include/net/netlink.h:1621 [inline]\n fill_nldev_handle+0x16e/0x200 drivers/infiniband/core/nldev.c:265\n rdma_nl_notify_event+0x561/0xef0 drivers/infiniband/core/nldev.c:2857\n ib_device_notify_register+0x22/0x230 drivers/infiniband/core/device.c:1344\n ib_register_device+0x1292/0x1460 drivers/infiniband/core/device.c:1460\n rxe_register_device+0x233/0x350 drivers/infiniband/sw/rxe/rxe_verbs.c:1540\n rxe_net_add+0x74/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:550\n rxe_newlink+0xde/0x1a0 drivers/infiniband/sw/rxe/rxe.c:212\n nldev_newlink+0x5ea/0x680 drivers/infiniband/core/nldev.c:1795\n rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]\n rdma_nl_rcv+0x6dd/0x9e0 drivers/infiniband/core/netlink.c:259\n netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]\n netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1339\n netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1883\n sock_sendmsg_nosec net/socket.c:709 [inline]\n __sock_sendmsg+0x221/0x270 net/socket.c:724\n ____sys_sendmsg+0x53a/0x860 net/socket.c:2564\n ___sys_sendmsg net/socket.c:2618 [inline]\n __sys_sendmsg+0x269/0x350 net/socket.c:2650\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f42d1b8d169\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 ...\nRSP: 002b:00007f42d2960038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f42d1da6320 RCX: 00007f42d1b8d169\nRDX: 0000000000000000 RSI: 00004000000002c0 RDI: 000000000000000c\nRBP: 00007f42d1c0e2a0 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 0000000000000000 R14: 00007f42d1da6320 R15: 00007ffe399344a8\n \n\nAllocated by task 10025:\n kasan_save_stack mm/kasan/common.c:47 [inline]\n kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\n __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394\n kasan_kmalloc include/linux/kasan.h:260 [inline]\n __do_kmalloc_node mm/slub.c:4294 [inline]\n __kmalloc_node_track_caller_noprof+0x28b/0x4c0 mm/slub.c:4313\n __kmemdup_nul mm/util.c:61 [inline]\n kstrdup+0x42/0x100 mm/util.c:81\n kobject_set_name_vargs+0x61/0x120 lib/kobject.c:274\n dev_set_name+0xd5/0x120 drivers/base/core.c:3468\n assign_name drivers/infiniband/core/device.c:1202 [inline]\n ib_register_device+0x178/0x1460 drivers/infiniband/core/device.c:1384\n rxe_register_device+0x233/0x350 drivers/infiniband/sw/rxe/rxe_verbs.c:1540\n rxe_net_add+0x74/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:550\n rxe_newlink+0xde/0x1a0 drivers/infiniband/sw/rxe/rxe.c:212\n nldev_newlink+0x5ea/0x680 drivers/infiniband/core/nldev.c:1795\n rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]\n rdma_nl_rcv+0x6dd/0x9e0 drivers/infiniband/core/netlink.c:259\n netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]\n netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1339\n netlink_sendmsg+0x8de/0xcb0 net\n---truncated---" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Both halves of the race are driven by `sendmsg()` on a local NETLINK_RDMA socket (`rdma_nl_rcv_msg` → `nldev_newlink` and `nldev_set_doit`); no remote or adjacent peer data reaches the vulnerable code.\nAC:L - The attacker owns both sides of the race, looping RDMA_NLDEV_CMD_NEWLINK (rxe/siw link add, which ends in `ib_device_notify_register()`) in one thread against RDMA_NLDEV_CMD_SET rename in another; the device is already in the `devices` xarray and reachable by index before the unprotected notify runs, and syzkaller reproduced it.\nPR:L - The gate is `netlink_capable(skb, CAP_NET_ADMIN)` against `init_user_ns`, so it is not obtainable via `unshare -Urn`, but CAP_NET_ADMIN in the initial user namespace is routinely delegated to non-root container workloads (Docker/K8s RDMA and SR-IOV network plugins commonly run `--cap-add=NET_ADMIN` without user namespaces), so this is scored as a low-privileged principal rather than real host root.\nUI:N - The attacker issues both the device registration and the concurrent rename itself over netlink; no victim action of any kind is required.\nS:U - The use-after-free is on kernel slab memory and its consequences remain within the kernel's own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - `nla_put_string()` runs `strlen()` and `memcpy()` over the freed `kobj->name` chunk and the result is `rdma_nl_multicast()`ed to RDMA_NL_GROUP_NOTIFY, a group any unprivileged process may bind because the RDMA netlink socket sets `NL_CFG_F_NONROOT_RECV` — reallocated kernel heap contents, plus an unbounded out-of-bounds read past the freed chunk when no NUL follows, are disclosed straight to userspace.\nI:H - This is a slab use-after-free where the attacker can spray the freed kmalloc chunk and control the bytes the kernel then consumes and emits; per UAF-class scoring the reallocation primitive is treated as exploitable for kernel state corruption, and the forged device name additionally steers RDMA monitor tooling in userspace onto the wrong device.\nA:H - The `strlen`/`memcpy` over freed memory is a KASAN slab-use-after-free read that oopses when the backing page has been returned or under KFENCE/page poisoning, and on `panic_on_warn` systems the KASAN report itself panics the host." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/core/device.c" ], "versions": [ { "version": "9cbed5aab5aeea420d0aa945733bf608449d44fb", "lessThan": "0d6460b9d2a3ee380940bdf47680751ef91cb88e", "status": "affected", "versionType": "git" }, { "version": "9cbed5aab5aeea420d0aa945733bf608449d44fb", "lessThan": "56ec8580be5174b2b9774066e60f1aad56d201db", "status": "affected", "versionType": "git" }, { "version": "9cbed5aab5aeea420d0aa945733bf608449d44fb", "lessThan": "edf6b543e81ba68c6dbac2499ab362098a5a9716", "status": "affected", "versionType": "git" }, { "version": "9cbed5aab5aeea420d0aa945733bf608449d44fb", "lessThan": "1d6a9e7449e2a0c1e2934eee7880ba8bd1e464cd", "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/core/device.c" ], "versions": [ { "version": "6.12", "status": "affected" }, { "version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.23", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13.11", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14.2", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15", "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": "6.12", "versionEndExcluding": "6.12.23" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.13.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.14.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.15" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0d6460b9d2a3ee380940bdf47680751ef91cb88e" }, { "url": "https://git.kernel.org/stable/c/56ec8580be5174b2b9774066e60f1aad56d201db" }, { "url": "https://git.kernel.org/stable/c/edf6b543e81ba68c6dbac2499ab362098a5a9716" }, { "url": "https://git.kernel.org/stable/c/1d6a9e7449e2a0c1e2934eee7880ba8bd1e464cd" } ], "title": "RDMA/core: Fix use-after-free when rename device name", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2025-22085", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-04-21T14:57:43.878838Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-04-21T15:01:46.413Z" } } ] } }