ghsa-f7c5-8mw5-3gc6
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
net: marvell: prestera: fix handling IPv4 routes with nhid
Fix handling IPv4 routes referencing a nexthop via its id by replacing calls to fib_info_nh() with fib_info_nhc().
Trying to add an IPv4 route referencing a nextop via nhid:
$ ip link set up swp5
$ ip a a 10.0.0.1/24 dev swp5
$ ip nexthop add dev swp5 id 20 via 10.0.0.2
$ ip route add 10.0.1.0/24 nhid 20
triggers warnings when trying to handle the route:
[ 528.805763] ------------[ cut here ]------------ [ 528.810437] WARNING: CPU: 3 PID: 53 at include/net/nexthop.h:468 __prestera_fi_is_direct+0x2c/0x68 [prestera] [ 528.820434] Modules linked in: prestera_pci act_gact act_police sch_ingress cls_u32 cls_flower prestera arm64_delta_tn48m_dn_led(O) arm64_delta_tn48m_dn_cpld(O) [last unloaded: prestera_pci] [ 528.837485] CPU: 3 PID: 53 Comm: kworker/u8:3 Tainted: G O 6.4.5 #1 [ 528.845178] Hardware name: delta,tn48m-dn (DT) [ 528.849641] Workqueue: prestera_ordered __prestera_router_fib_event_work [prestera] [ 528.857352] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 528.864347] pc : __prestera_fi_is_direct+0x2c/0x68 [prestera] [ 528.870135] lr : prestera_k_arb_fib_evt+0xb20/0xd50 [prestera] [ 528.876007] sp : ffff80000b20bc90 [ 528.879336] x29: ffff80000b20bc90 x28: 0000000000000000 x27: ffff0001374d3a48 [ 528.886510] x26: ffff000105604000 x25: ffff000134af8a28 x24: ffff0001374d3800 [ 528.893683] x23: ffff000101c89148 x22: ffff000101c89000 x21: ffff000101c89200 [ 528.900855] x20: ffff00013641fda0 x19: ffff800009d01088 x18: 0000000000000059 [ 528.908027] x17: 0000000000000277 x16: 0000000000000000 x15: 0000000000000000 [ 528.915198] x14: 0000000000000003 x13: 00000000000fe400 x12: 0000000000000000 [ 528.922371] x11: 0000000000000002 x10: 0000000000000aa0 x9 : ffff8000013d2020 [ 528.929543] x8 : 0000000000000018 x7 : 000000007b1703f8 x6 : 000000001ca72f86 [ 528.936715] x5 : 0000000033399ea7 x4 : 0000000000000000 x3 : ffff0001374d3acc [ 528.943886] x2 : 0000000000000000 x1 : ffff00010200de00 x0 : ffff000134ae3f80 [ 528.951058] Call trace: [ 528.953516] __prestera_fi_is_direct+0x2c/0x68 [prestera] [ 528.958952] __prestera_router_fib_event_work+0x100/0x158 [prestera] [ 528.965348] process_one_work+0x208/0x488 [ 528.969387] worker_thread+0x4c/0x430 [ 528.973068] kthread+0x120/0x138 [ 528.976313] ret_from_fork+0x10/0x20 [ 528.979909] ---[ end trace 0000000000000000 ]--- [ 528.984998] ------------[ cut here ]------------ [ 528.989645] WARNING: CPU: 3 PID: 53 at include/net/nexthop.h:468 __prestera_fi_is_direct+0x2c/0x68 [prestera] [ 528.999628] Modules linked in: prestera_pci act_gact act_police sch_ingress cls_u32 cls_flower prestera arm64_delta_tn48m_dn_led(O) arm64_delta_tn48m_dn_cpld(O) [last unloaded: prestera_pci] [ 529.016676] CPU: 3 PID: 53 Comm: kworker/u8:3 Tainted: G W O 6.4.5 #1 [ 529.024368] Hardware name: delta,tn48m-dn (DT) [ 529.028830] Workqueue: prestera_ordered __prestera_router_fib_event_work [prestera] [ 529.036539] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 529.043533] pc : __prestera_fi_is_direct+0x2c/0x68 [prestera] [ 529.049318] lr : __prestera_k_arb_fc_apply+0x280/0x2f8 [prestera] [ 529.055452] sp : ffff80000b20bc60 [ 529.058781] x29: ffff80000b20bc60 x28: 0000000000000000 x27: ffff0001374d3a48 [ 529.065953] x26: ffff000105604000 x25: ffff000134af8a28 x24: ffff0001374d3800 [ 529.073126] x23: ffff000101c89148 x22: ffff000101c89148 x21: ffff00013641fda0 [ 529.080299] x20: ffff000101c89000 x19: ffff000101c89020 x18: 0000000000000059 [ 529.087471] x17: 0000000000000277 x16: 0000000000000000 x15: 0000000000000000 [ 529.094642] x14: 0000000000000003 x13: 00000000000fe400 x12: 0000000000000000 [ 529.101814] x11: 0000000000000002 x10: 0000000000000aa0 x9 : ffff8000013cee80 [ 529.108985] x8 : 0000000000000018 x7 : 000000007b1703f8 x6 ---truncated---
{
"affected": [],
"aliases": [
"CVE-2023-53342"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-17T15:15:37Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: marvell: prestera: fix handling IPv4 routes with nhid\n\nFix handling IPv4 routes referencing a nexthop via its id by replacing\ncalls to fib_info_nh() with fib_info_nhc().\n\nTrying to add an IPv4 route referencing a nextop via nhid:\n\n $ ip link set up swp5\n $ ip a a 10.0.0.1/24 dev swp5\n $ ip nexthop add dev swp5 id 20 via 10.0.0.2\n $ ip route add 10.0.1.0/24 nhid 20\n\ntriggers warnings when trying to handle the route:\n\n[ 528.805763] ------------[ cut here ]------------\n[ 528.810437] WARNING: CPU: 3 PID: 53 at include/net/nexthop.h:468 __prestera_fi_is_direct+0x2c/0x68 [prestera]\n[ 528.820434] Modules linked in: prestera_pci act_gact act_police sch_ingress cls_u32 cls_flower prestera arm64_delta_tn48m_dn_led(O) arm64_delta_tn48m_dn_cpld(O) [last unloaded: prestera_pci]\n[ 528.837485] CPU: 3 PID: 53 Comm: kworker/u8:3 Tainted: G O 6.4.5 #1\n[ 528.845178] Hardware name: delta,tn48m-dn (DT)\n[ 528.849641] Workqueue: prestera_ordered __prestera_router_fib_event_work [prestera]\n[ 528.857352] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 528.864347] pc : __prestera_fi_is_direct+0x2c/0x68 [prestera]\n[ 528.870135] lr : prestera_k_arb_fib_evt+0xb20/0xd50 [prestera]\n[ 528.876007] sp : ffff80000b20bc90\n[ 528.879336] x29: ffff80000b20bc90 x28: 0000000000000000 x27: ffff0001374d3a48\n[ 528.886510] x26: ffff000105604000 x25: ffff000134af8a28 x24: ffff0001374d3800\n[ 528.893683] x23: ffff000101c89148 x22: ffff000101c89000 x21: ffff000101c89200\n[ 528.900855] x20: ffff00013641fda0 x19: ffff800009d01088 x18: 0000000000000059\n[ 528.908027] x17: 0000000000000277 x16: 0000000000000000 x15: 0000000000000000\n[ 528.915198] x14: 0000000000000003 x13: 00000000000fe400 x12: 0000000000000000\n[ 528.922371] x11: 0000000000000002 x10: 0000000000000aa0 x9 : ffff8000013d2020\n[ 528.929543] x8 : 0000000000000018 x7 : 000000007b1703f8 x6 : 000000001ca72f86\n[ 528.936715] x5 : 0000000033399ea7 x4 : 0000000000000000 x3 : ffff0001374d3acc\n[ 528.943886] x2 : 0000000000000000 x1 : ffff00010200de00 x0 : ffff000134ae3f80\n[ 528.951058] Call trace:\n[ 528.953516] __prestera_fi_is_direct+0x2c/0x68 [prestera]\n[ 528.958952] __prestera_router_fib_event_work+0x100/0x158 [prestera]\n[ 528.965348] process_one_work+0x208/0x488\n[ 528.969387] worker_thread+0x4c/0x430\n[ 528.973068] kthread+0x120/0x138\n[ 528.976313] ret_from_fork+0x10/0x20\n[ 528.979909] ---[ end trace 0000000000000000 ]---\n[ 528.984998] ------------[ cut here ]------------\n[ 528.989645] WARNING: CPU: 3 PID: 53 at include/net/nexthop.h:468 __prestera_fi_is_direct+0x2c/0x68 [prestera]\n[ 528.999628] Modules linked in: prestera_pci act_gact act_police sch_ingress cls_u32 cls_flower prestera arm64_delta_tn48m_dn_led(O) arm64_delta_tn48m_dn_cpld(O) [last unloaded: prestera_pci]\n[ 529.016676] CPU: 3 PID: 53 Comm: kworker/u8:3 Tainted: G W O 6.4.5 #1\n[ 529.024368] Hardware name: delta,tn48m-dn (DT)\n[ 529.028830] Workqueue: prestera_ordered __prestera_router_fib_event_work [prestera]\n[ 529.036539] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 529.043533] pc : __prestera_fi_is_direct+0x2c/0x68 [prestera]\n[ 529.049318] lr : __prestera_k_arb_fc_apply+0x280/0x2f8 [prestera]\n[ 529.055452] sp : ffff80000b20bc60\n[ 529.058781] x29: ffff80000b20bc60 x28: 0000000000000000 x27: ffff0001374d3a48\n[ 529.065953] x26: ffff000105604000 x25: ffff000134af8a28 x24: ffff0001374d3800\n[ 529.073126] x23: ffff000101c89148 x22: ffff000101c89148 x21: ffff00013641fda0\n[ 529.080299] x20: ffff000101c89000 x19: ffff000101c89020 x18: 0000000000000059\n[ 529.087471] x17: 0000000000000277 x16: 0000000000000000 x15: 0000000000000000\n[ 529.094642] x14: 0000000000000003 x13: 00000000000fe400 x12: 0000000000000000\n[ 529.101814] x11: 0000000000000002 x10: 0000000000000aa0 x9 : ffff8000013cee80\n[ 529.108985] x8 : 0000000000000018 x7 : 000000007b1703f8 x6 \n---truncated---",
"id": "GHSA-f7c5-8mw5-3gc6",
"modified": "2025-09-17T15:30:38Z",
"published": "2025-09-17T15:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53342"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2aa71b4b294ee2c3041d085404cea914be9b3225"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8373dca3c1f8a203cecebe3421dbe890c4f08e16"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a3e5f3b7f25d7b90f3b76d98a946fec6e5f79216"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- 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.