199 lines
11 KiB
JSON
199 lines
11 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-2025-39908",
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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": "2025-04-16T07:20:57.146Z",
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"datePublished": "2025-10-01T07:44:31.904Z",
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"dateUpdated": "2026-08-05T12:06:01.925Z"
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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": "2026-08-05T12:06:01.925Z"
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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\nnet: dev_ioctl: take ops lock in hwtstamp lower paths\n\nndo hwtstamp callbacks are expected to run under the per-device ops\nlock. Make the lower get/set paths consistent with the rest of ndo\ninvocations.\n\nKernel log:\nWARNING: CPU: 13 PID: 51364 at ./include/net/netdev_lock.h:70 __netdev_update_features+0x4bd/0xe60\n...\nRIP: 0010:__netdev_update_features+0x4bd/0xe60\n...\nCall Trace:\n<TASK>\nnetdev_update_features+0x1f/0x60\nmlx5_hwtstamp_set+0x181/0x290 [mlx5_core]\nmlx5e_hwtstamp_set+0x19/0x30 [mlx5_core]\ndev_set_hwtstamp_phylib+0x9f/0x220\ndev_set_hwtstamp_phylib+0x9f/0x220\ndev_set_hwtstamp+0x13d/0x240\ndev_ioctl+0x12f/0x4b0\nsock_ioctl+0x171/0x370\n__x64_sys_ioctl+0x3f7/0x900\n? __sys_setsockopt+0x69/0xb0\ndo_syscall_64+0x6f/0x2e0\nentry_SYSCALL_64_after_hwframe+0x4b/0x53\n...\n</TASK>\n....\n---[ end trace 0000000000000000 ]---\n\nNote that the mlx5_hwtstamp_set and mlx5e_hwtstamp_set functions shown\nin the trace come from an in progress patch converting the legacy ioctl\nto ndo_hwtstamp_get/set and are not present in mainline."
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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 vulnerable code is reached through the `SIOCGHWTSTAMP`/`SIOCSHWTSTAMP` socket ioctl on a stacked netdev (VLAN/bond/macvlan), which requires local access to the system. No remote or adjacent network input reaches this path.\nAC:L - The attacker fully controls one side of the race (spamming the unlocked ioctl in a tight loop) and can drive the other side by triggering device reconfiguration/VF resets or racing concurrent netdev-genl queue operations that take only `dev->lock`; no attacker-uncontrollable precondition is required beyond a bond/VLAN/macvlan over an ops-locked NIC, which is a standard datacenter/cloud configuration.\nPR:L - `SIOCGHWTSTAMP` passes through `dev_ioctl`'s default case with no capability check whatsoever, so any unprivileged local user reaches the unlocked lower-device ndo call; `SIOCSHWTSTAMP` requires only `ns_capable(net->user_ns, CAP_NET_ADMIN)`, which an unprivileged user obtains via user namespaces or holds inside a container netns.\nUI:N - The ioctl is issued directly by the attacker's own process; no victim action, mount, or file open is needed.\nS:U - The missing lock and its consequences are entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unserialized `ndo_hwtstamp_get`/`set` racing against `iavf_free_queues()`/queue reconfiguration yields use-after-free access to freed kernel heap objects, which is leverageable to read reclaimed kernel memory, and the get path can return torn driver state.\nI:H - The race produces a use-after-free read-modify-write (`adapter->rx_rings[i].flags |= ...`) into a freed or reallocated array, and an out-of-bounds write once `num_active_queues` changes underneath the loop — a controllable kernel heap write primitive usable for privilege escalation.\nA:H - The missing lock trips `netdev_ops_assert_locked()`, producing a WARNING splat that panics on `panic_on_warn` systems, and the underlying use-after-free/NULL-deref on `adapter->rx_rings` crashes the kernel outright."
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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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"net/core/dev_ioctl.c"
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],
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"versions": [
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{
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"version": "ffb7ed19ac0a9fa9ea79af1d7b42c03a10da98a5",
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"lessThan": "2d92fa0cdc02291de57f72170e8b60cef0cf5372",
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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": "ffb7ed19ac0a9fa9ea79af1d7b42c03a10da98a5",
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"lessThan": "686cab5a18e443e1d5f2abb17bed45837836425f",
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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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"net/core/dev_ioctl.c"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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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": "6.16.8",
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"lessThanOrEqual": "6.16.*",
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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": "6.17",
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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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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "6.16.8"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "6.17"
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}
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]
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}
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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/2d92fa0cdc02291de57f72170e8b60cef0cf5372"
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},
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{
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"url": "https://git.kernel.org/stable/c/686cab5a18e443e1d5f2abb17bed45837836425f"
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}
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],
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"title": "net: dev_ioctl: take ops lock in hwtstamp lower paths",
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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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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-39908",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-01-14T17:42:37.187417Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"description": "CWE-noinfo Not enough information"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-01-14T17:42:46.951Z"
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}
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}
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]
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}
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} |