ghsa-vmpq-wpxg-r7rp
Vulnerability from github
Published
2024-02-22 18:30
Modified
2024-03-18 18:32
Severity
Details
In the Linux kernel, the following vulnerability has been resolved:
net: netdevsim: don't try to destroy PHC on VFs
PHC gets initialized in nsim_init_netdevsim(), which is only called if (nsim_dev_port_is_pf()).
Create a counterpart of nsim_init_netdevsim() and move the mock_phc_destroy() there.
This fixes a crash trying to destroy netdevsim with VFs instantiated, as caught by running the devlink.sh test:
BUG: kernel NULL pointer dereference, address: 00000000000000b8
RIP: 0010:mock_phc_destroy+0xd/0x30
Call Trace:
<TASK>
nsim_destroy+0x4a/0x70 [netdevsim]
__nsim_dev_port_del+0x47/0x70 [netdevsim]
nsim_dev_reload_destroy+0x105/0x120 [netdevsim]
nsim_drv_remove+0x2f/0xb0 [netdevsim]
device_release_driver_internal+0x1a1/0x210
bus_remove_device+0xd5/0x120
device_del+0x159/0x490
device_unregister+0x12/0x30
del_device_store+0x11a/0x1a0 [netdevsim]
kernfs_fop_write_iter+0x130/0x1d0
vfs_write+0x30b/0x4b0
ksys_write+0x69/0xf0
do_syscall_64+0xcc/0x1e0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
{
"affected": [],
"aliases": [
"CVE-2024-26587"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-22T17:15:08Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: netdevsim: don\u0027t try to destroy PHC on VFs\n\nPHC gets initialized in nsim_init_netdevsim(), which\nis only called if (nsim_dev_port_is_pf()).\n\nCreate a counterpart of nsim_init_netdevsim() and\nmove the mock_phc_destroy() there.\n\nThis fixes a crash trying to destroy netdevsim with\nVFs instantiated, as caught by running the devlink.sh test:\n\n BUG: kernel NULL pointer dereference, address: 00000000000000b8\n RIP: 0010:mock_phc_destroy+0xd/0x30\n Call Trace:\n \u003cTASK\u003e\n nsim_destroy+0x4a/0x70 [netdevsim]\n __nsim_dev_port_del+0x47/0x70 [netdevsim]\n nsim_dev_reload_destroy+0x105/0x120 [netdevsim]\n nsim_drv_remove+0x2f/0xb0 [netdevsim]\n device_release_driver_internal+0x1a1/0x210\n bus_remove_device+0xd5/0x120\n device_del+0x159/0x490\n device_unregister+0x12/0x30\n del_device_store+0x11a/0x1a0 [netdevsim]\n kernfs_fop_write_iter+0x130/0x1d0\n vfs_write+0x30b/0x4b0\n ksys_write+0x69/0xf0\n do_syscall_64+0xcc/0x1e0\n entry_SYSCALL_64_after_hwframe+0x6f/0x77",
"id": "GHSA-vmpq-wpxg-r7rp",
"modified": "2024-03-18T18:32:17Z",
"published": "2024-02-22T18:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26587"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/08aca65997fb6f233066883b1f1e653bcb1f26ca"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c5068e442eed063d2f1658e6b6d3c1c6fcf1e588"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ea937f77208323d35ffe2f8d8fc81b00118bfcda"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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