262 lines
17 KiB
JSON
262 lines
17 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-22089",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-12-29T08:45:45.817Z",
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"datePublished": "2025-04-16T14:12:41.732Z",
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"dateUpdated": "2026-08-05T11:56:43.154Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:56:43.154Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Don't expose hw_counters outside of init net namespace\n\nCommit 467f432a521a (\"RDMA/core: Split port and device counter sysfs\nattributes\") accidentally almost exposed hw counters to non-init net\nnamespaces. It didn't expose them fully, as an attempt to read any of\nthose counters leads to a crash like this one:\n\n[42021.807566] BUG: kernel NULL pointer dereference, address: 0000000000000028\n[42021.814463] #PF: supervisor read access in kernel mode\n[42021.819549] #PF: error_code(0x0000) - not-present page\n[42021.824636] PGD 0 P4D 0\n[42021.827145] Oops: 0000 [#1] SMP PTI\n[42021.830598] CPU: 82 PID: 2843922 Comm: switchto-defaul Kdump: loaded Tainted: G S W I XXX\n[42021.841697] Hardware name: XXX\n[42021.849619] RIP: 0010:hw_stat_device_show+0x1e/0x40 [ib_core]\n[42021.855362] Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 49 89 d0 4c 8b 5e 20 48 8b 8f b8 04 00 00 48 81 c7 f0 fa ff ff <48> 8b 41 28 48 29 ce 48 83 c6 d0 48 c1 ee 04 69 d6 ab aa aa aa 48\n[42021.873931] RSP: 0018:ffff97fe90f03da0 EFLAGS: 00010287\n[42021.879108] RAX: ffff9406988a8c60 RBX: ffff940e1072d438 RCX: 0000000000000000\n[42021.886169] RDX: ffff94085f1aa000 RSI: ffff93c6cbbdbcb0 RDI: ffff940c7517aef0\n[42021.893230] RBP: ffff97fe90f03e70 R08: ffff94085f1aa000 R09: 0000000000000000\n[42021.900294] R10: ffff94085f1aa000 R11: ffffffffc0775680 R12: ffffffff87ca2530\n[42021.907355] R13: ffff940651602840 R14: ffff93c6cbbdbcb0 R15: ffff94085f1aa000\n[42021.914418] FS: 00007fda1a3b9700(0000) GS:ffff94453fb80000(0000) knlGS:0000000000000000\n[42021.922423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[42021.928130] CR2: 0000000000000028 CR3: 00000042dcfb8003 CR4: 00000000003726f0\n[42021.935194] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[42021.942257] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[42021.949324] Call Trace:\n[42021.951756] <TASK>\n[42021.953842] [<ffffffff86c58674>] ? show_regs+0x64/0x70\n[42021.959030] [<ffffffff86c58468>] ? __die+0x78/0xc0\n[42021.963874] [<ffffffff86c9ef75>] ? page_fault_oops+0x2b5/0x3b0\n[42021.969749] [<ffffffff87674b92>] ? exc_page_fault+0x1a2/0x3c0\n[42021.975549] [<ffffffff87801326>] ? asm_exc_page_fault+0x26/0x30\n[42021.981517] [<ffffffffc0775680>] ? __pfx_show_hw_stats+0x10/0x10 [ib_core]\n[42021.988482] [<ffffffffc077564e>] ? hw_stat_device_show+0x1e/0x40 [ib_core]\n[42021.995438] [<ffffffff86ac7f8e>] dev_attr_show+0x1e/0x50\n[42022.000803] [<ffffffff86a3eeb1>] sysfs_kf_seq_show+0x81/0xe0\n[42022.006508] [<ffffffff86a11134>] seq_read_iter+0xf4/0x410\n[42022.011954] [<ffffffff869f4b2e>] vfs_read+0x16e/0x2f0\n[42022.017058] [<ffffffff869f50ee>] ksys_read+0x6e/0xe0\n[42022.022073] [<ffffffff8766f1ca>] do_syscall_64+0x6a/0xa0\n[42022.027441] [<ffffffff8780013b>] entry_SYSCALL_64_after_hwframe+0x78/0xe2\n\nThe problem can be reproduced using the following steps:\n ip netns add foo\n ip netns exec foo bash\n cat /sys/class/infiniband/mlx4_0/hw_counters/*\n\nThe panic occurs because of casting the device pointer into an\nib_device pointer using container_of() in hw_stat_device_show() is\nwrong and leads to a memory corruption.\n\nHowever the real problem is that hw counters should never been exposed\noutside of the non-init net namespace.\n\nFix this by saving the index of the corresponding attribute group\n(it might be 1 or 2 depending on the presence of driver-specific\nattributes) and zeroing the pointer to hw_counters group for compat\ndevices during the initialization.\n\nWith this fix applied hw_counters are not available in a non-init\nnet namespace:\n find /sys/class/infiniband/mlx4_0/ -name hw_counters\n /sys/class/infiniband/mlx4_0/ports/1/hw_counters\n /sys/class/infiniband/mlx4_0/ports/2/hw_counters\n /sys/class/infiniband/mlx4_0/hw_counters\n\n ip netns add foo\n ip netns exec foo bash\n find /sys/class/infiniband/mlx4_0/ -name hw_counters"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerability is triggered by a local `read()`/`write()` syscall on a sysfs attribute under `/sys/class/infiniband/<dev>/hw_counters/`, after the attacker places itself in a non-initial network namespace. No network input reaches the vulnerable code.\nAC:L - The trigger is fully deterministic and requires no race: create a netns, mount sysfs, read the counter file (the commit message documents the exact three-command reproducer). `ib_devices_shared_netns` defaults to true, so no unusual configuration is needed.\nPR:L - An unprivileged local user can reach it via `unshare -Urnm` plus a sysfs mount, since sysfs is `FS_USERNS_MOUNT` and only requires `ns_capable(net->user_ns, CAP_SYS_ADMIN)`; the counter files are world-readable (0444), so any process inside an ordinary container also qualifies. It is not PR:N because a local account/container foothold is required.\nUI:N - The attacker performs every step itself — namespace creation, sysfs mount and file read — with no action by any other user or administrator.\nS:U - The type confusion corrupts kernel memory within the same kernel security authority; no hypervisor, IOMMU or other trust boundary is crossed, matching standard kernel privilege-escalation scoring.\nC:H - The bogus `container_of()` makes the kernel read `hw_stats_data` from uninitialized/adjacent slab memory that heap grooming can control, after which `print_hw_stat()` returns `stats->value[index]` — an attacker-influenced pointer plus index — to userspace through `sysfs_emit()`, yielding arbitrary kernel memory disclosure.\nI:H - The fabricated `ib_device` pointer produces a wild-pointer write via `mutex_lock(&stats->lock)` and via `set_stats_lifespan()` on the writable `lifespan` attribute, and `update_hw_stats()` performs an indirect call through `dev->ops.get_hw_stats` read from fully out-of-bounds memory, giving a control-flow hijack primitive.\nA:H - The reported and reproducible outcome is an immediate kernel NULL pointer dereference oops/panic in `hw_stat_device_show()`, which any unprivileged user or container process can trigger on demand with a single `cat`."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/infiniband/core/device.c",
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"drivers/infiniband/core/sysfs.c",
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"include/rdma/ib_verbs.h"
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],
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"versions": [
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{
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"version": "467f432a521a284c418e3d521ee51840a5e23424",
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"lessThan": "9a5b7f8842a90a5e6eeff37f9f6d814e61ea3529",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "467f432a521a284c418e3d521ee51840a5e23424",
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"lessThan": "d5212b99649c5740154f307e9e3d7fee9bf62773",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "467f432a521a284c418e3d521ee51840a5e23424",
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"lessThan": "0cf80f924aecb5b2bebd4f4ad11b2efc676a0b78",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "467f432a521a284c418e3d521ee51840a5e23424",
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"lessThan": "df45ae2a4f1cdfda00c032839e12092e1f32c05e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "467f432a521a284c418e3d521ee51840a5e23424",
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"lessThan": "c14d9704f5d77a7c7fa46e2114b64a4f75b64e17",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "467f432a521a284c418e3d521ee51840a5e23424",
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"lessThan": "6682da5d8fd578a5068531d01633c9d2e4c8f12b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "467f432a521a284c418e3d521ee51840a5e23424",
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"lessThan": "a1ecb30f90856b0be4168ad51b8875148e285c1f",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/infiniband/core/device.c",
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"drivers/infiniband/core/sysfs.c",
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"include/rdma/ib_verbs.h"
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],
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"versions": [
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{
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"version": "5.14",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.14",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.180",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.134",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.87",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.23",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.13.11",
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"lessThanOrEqual": "6.13.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.14.2",
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"lessThanOrEqual": "6.14.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.15",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.14",
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"versionEndExcluding": "5.15.180"
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/9a5b7f8842a90a5e6eeff37f9f6d814e61ea3529"
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},
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{
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"url": "https://git.kernel.org/stable/c/d5212b99649c5740154f307e9e3d7fee9bf62773"
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},
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{
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"url": "https://git.kernel.org/stable/c/0cf80f924aecb5b2bebd4f4ad11b2efc676a0b78"
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},
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{
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"url": "https://git.kernel.org/stable/c/df45ae2a4f1cdfda00c032839e12092e1f32c05e"
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},
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{
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"url": "https://git.kernel.org/stable/c/c14d9704f5d77a7c7fa46e2114b64a4f75b64e17"
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},
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{
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"url": "https://git.kernel.org/stable/c/6682da5d8fd578a5068531d01633c9d2e4c8f12b"
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},
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{
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"url": "https://git.kernel.org/stable/c/a1ecb30f90856b0be4168ad51b8875148e285c1f"
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}
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],
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"title": "RDMA/core: Don't expose hw_counters outside of init net namespace",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T19:42:08.973Z"
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}
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}
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]
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}
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} |