CVE-2025-39947 (GCVE-0-2025-39947)
Vulnerability from cvelistv5
Published
2025-10-04 07:31
Modified
2025-10-04 07:31
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Harden uplink netdev access against device unbind
The function mlx5_uplink_netdev_get() gets the uplink netdevice
pointer from mdev->mlx5e_res.uplink_netdev. However, the netdevice can
be removed and its pointer cleared when unbound from the mlx5_core.eth
driver. This results in a NULL pointer, causing a kernel panic.
BUG: unable to handle page fault for address: 0000000000001300
at RIP: 0010:mlx5e_vport_rep_load+0x22a/0x270 [mlx5_core]
Call Trace:
<TASK>
mlx5_esw_offloads_rep_load+0x68/0xe0 [mlx5_core]
esw_offloads_enable+0x593/0x910 [mlx5_core]
mlx5_eswitch_enable_locked+0x341/0x420 [mlx5_core]
mlx5_devlink_eswitch_mode_set+0x17e/0x3a0 [mlx5_core]
devlink_nl_eswitch_set_doit+0x60/0xd0
genl_family_rcv_msg_doit+0xe0/0x130
genl_rcv_msg+0x183/0x290
netlink_rcv_skb+0x4b/0xf0
genl_rcv+0x24/0x40
netlink_unicast+0x255/0x380
netlink_sendmsg+0x1f3/0x420
__sock_sendmsg+0x38/0x60
__sys_sendto+0x119/0x180
do_syscall_64+0x53/0x1d0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
Ensure the pointer is valid before use by checking it for NULL. If it
is valid, immediately call netdev_hold() to take a reference, and
preventing the netdevice from being freed while it is in use.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/en_rep.c",
"drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c",
"drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h",
"include/linux/mlx5/driver.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e",
"status": "affected",
"version": "7a9fb35e8c3a67145fca262c304de65cb2f83abf",
"versionType": "git"
},
{
"lessThan": "d1f3db4e7a3be29fc17f01850f162363f919370d",
"status": "affected",
"version": "7a9fb35e8c3a67145fca262c304de65cb2f83abf",
"versionType": "git"
},
{
"lessThan": "8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b",
"status": "affected",
"version": "7a9fb35e8c3a67145fca262c304de65cb2f83abf",
"versionType": "git"
},
{
"lessThan": "6b4be64fd9fec16418f365c2d8e47a7566e9eba5",
"status": "affected",
"version": "7a9fb35e8c3a67145fca262c304de65cb2f83abf",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/en_rep.c",
"drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c",
"drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h",
"include/linux/mlx5/driver.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"lessThan": "5.13",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.108",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.49",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.108",
"versionStartIncluding": "5.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.49",
"versionStartIncluding": "5.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.9",
"versionStartIncluding": "5.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "5.13",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Harden uplink netdev access against device unbind\n\nThe function mlx5_uplink_netdev_get() gets the uplink netdevice\npointer from mdev-\u003emlx5e_res.uplink_netdev. However, the netdevice can\nbe removed and its pointer cleared when unbound from the mlx5_core.eth\ndriver. This results in a NULL pointer, causing a kernel panic.\n\n BUG: unable to handle page fault for address: 0000000000001300\n at RIP: 0010:mlx5e_vport_rep_load+0x22a/0x270 [mlx5_core]\n Call Trace:\n \u003cTASK\u003e\n mlx5_esw_offloads_rep_load+0x68/0xe0 [mlx5_core]\n esw_offloads_enable+0x593/0x910 [mlx5_core]\n mlx5_eswitch_enable_locked+0x341/0x420 [mlx5_core]\n mlx5_devlink_eswitch_mode_set+0x17e/0x3a0 [mlx5_core]\n devlink_nl_eswitch_set_doit+0x60/0xd0\n genl_family_rcv_msg_doit+0xe0/0x130\n genl_rcv_msg+0x183/0x290\n netlink_rcv_skb+0x4b/0xf0\n genl_rcv+0x24/0x40\n netlink_unicast+0x255/0x380\n netlink_sendmsg+0x1f3/0x420\n __sock_sendmsg+0x38/0x60\n __sys_sendto+0x119/0x180\n do_syscall_64+0x53/0x1d0\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\nEnsure the pointer is valid before use by checking it for NULL. If it\nis valid, immediately call netdev_hold() to take a reference, and\npreventing the netdevice from being freed while it is in use."
}
],
"providerMetadata": {
"dateUpdated": "2025-10-04T07:31:08.636Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e"
},
{
"url": "https://git.kernel.org/stable/c/d1f3db4e7a3be29fc17f01850f162363f919370d"
},
{
"url": "https://git.kernel.org/stable/c/8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b"
},
{
"url": "https://git.kernel.org/stable/c/6b4be64fd9fec16418f365c2d8e47a7566e9eba5"
}
],
"title": "net/mlx5e: Harden uplink netdev access against device unbind",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-39947",
"datePublished": "2025-10-04T07:31:08.636Z",
"dateReserved": "2025-04-16T07:20:57.148Z",
"dateUpdated": "2025-10-04T07:31:08.636Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-39947\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-04T08:15:47.867\",\"lastModified\":\"2025-10-06T14:56:47.823\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5e: Harden uplink netdev access against device unbind\\n\\nThe function mlx5_uplink_netdev_get() gets the uplink netdevice\\npointer from mdev-\u003emlx5e_res.uplink_netdev. However, the netdevice can\\nbe removed and its pointer cleared when unbound from the mlx5_core.eth\\ndriver. This results in a NULL pointer, causing a kernel panic.\\n\\n BUG: unable to handle page fault for address: 0000000000001300\\n at RIP: 0010:mlx5e_vport_rep_load+0x22a/0x270 [mlx5_core]\\n Call Trace:\\n \u003cTASK\u003e\\n mlx5_esw_offloads_rep_load+0x68/0xe0 [mlx5_core]\\n esw_offloads_enable+0x593/0x910 [mlx5_core]\\n mlx5_eswitch_enable_locked+0x341/0x420 [mlx5_core]\\n mlx5_devlink_eswitch_mode_set+0x17e/0x3a0 [mlx5_core]\\n devlink_nl_eswitch_set_doit+0x60/0xd0\\n genl_family_rcv_msg_doit+0xe0/0x130\\n genl_rcv_msg+0x183/0x290\\n netlink_rcv_skb+0x4b/0xf0\\n genl_rcv+0x24/0x40\\n netlink_unicast+0x255/0x380\\n netlink_sendmsg+0x1f3/0x420\\n __sock_sendmsg+0x38/0x60\\n __sys_sendto+0x119/0x180\\n do_syscall_64+0x53/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\\n\\nEnsure the pointer is valid before use by checking it for NULL. If it\\nis valid, immediately call netdev_hold() to take a reference, and\\npreventing the netdevice from being freed while it is in use.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6b4be64fd9fec16418f365c2d8e47a7566e9eba5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d1f3db4e7a3be29fc17f01850f162363f919370d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…