ghsa-89f8-gjh9-jgr6
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: ti: netcp: Standardize knav_dma_open_channel to return NULL on error
Make knav_dma_open_channel consistently return NULL on error instead of ERR_PTR. Currently the header include/linux/soc/ti/knav_dma.h returns NULL when the driver is disabled, but the driver implementation does not even return NULL or ERR_PTR on failure, causing inconsistency in the users. This results in a crash in netcp_free_navigator_resources as followed (trimmed):
Unhandled fault: alignment exception (0x221) at 0xfffffff2 [fffffff2] pgd=80000800207003, pmd=82ffda003, *pte=00000000 Internal error: : 221 [#1] SMP ARM Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.17.0-rc7 #1 NONE Hardware name: Keystone PC is at knav_dma_close_channel+0x30/0x19c LR is at netcp_free_navigator_resources+0x2c/0x28c
[... TRIM...]
Call trace: knav_dma_close_channel from netcp_free_navigator_resources+0x2c/0x28c netcp_free_navigator_resources from netcp_ndo_open+0x430/0x46c netcp_ndo_open from __dev_open+0x114/0x29c __dev_open from __dev_change_flags+0x190/0x208 __dev_change_flags from netif_change_flags+0x1c/0x58 netif_change_flags from dev_change_flags+0x38/0xa0 dev_change_flags from ip_auto_config+0x2c4/0x11f0 ip_auto_config from do_one_initcall+0x58/0x200 do_one_initcall from kernel_init_freeable+0x1cc/0x238 kernel_init_freeable from kernel_init+0x1c/0x12c kernel_init from ret_from_fork+0x14/0x38 [... TRIM...]
Standardize the error handling by making the function return NULL on all error conditions. The API is used in just the netcp_core.c so the impact is limited.
Note, this change, in effect reverts commit 5b6cb43b4d62 ("net: ethernet: ti: netcp_core: return error while dma channel open issue"), but provides a less error prone implementation.
{
"affected": [],
"aliases": [
"CVE-2025-68220"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-16T14:15:55Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: ti: netcp: Standardize knav_dma_open_channel to return NULL on error\n\nMake knav_dma_open_channel consistently return NULL on error instead\nof ERR_PTR. Currently the header include/linux/soc/ti/knav_dma.h\nreturns NULL when the driver is disabled, but the driver\nimplementation does not even return NULL or ERR_PTR on failure,\ncausing inconsistency in the users. This results in a crash in\nnetcp_free_navigator_resources as followed (trimmed):\n\nUnhandled fault: alignment exception (0x221) at 0xfffffff2\n[fffffff2] *pgd=80000800207003, *pmd=82ffda003, *pte=00000000\nInternal error: : 221 [#1] SMP ARM\nModules linked in:\nCPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.17.0-rc7 #1 NONE\nHardware name: Keystone\nPC is at knav_dma_close_channel+0x30/0x19c\nLR is at netcp_free_navigator_resources+0x2c/0x28c\n\n[... TRIM...]\n\nCall trace:\n knav_dma_close_channel from netcp_free_navigator_resources+0x2c/0x28c\n netcp_free_navigator_resources from netcp_ndo_open+0x430/0x46c\n netcp_ndo_open from __dev_open+0x114/0x29c\n __dev_open from __dev_change_flags+0x190/0x208\n __dev_change_flags from netif_change_flags+0x1c/0x58\n netif_change_flags from dev_change_flags+0x38/0xa0\n dev_change_flags from ip_auto_config+0x2c4/0x11f0\n ip_auto_config from do_one_initcall+0x58/0x200\n do_one_initcall from kernel_init_freeable+0x1cc/0x238\n kernel_init_freeable from kernel_init+0x1c/0x12c\n kernel_init from ret_from_fork+0x14/0x38\n[... TRIM...]\n\nStandardize the error handling by making the function return NULL on\nall error conditions. The API is used in just the netcp_core.c so the\nimpact is limited.\n\nNote, this change, in effect reverts commit 5b6cb43b4d62 (\"net:\nethernet: ti: netcp_core: return error while dma channel open issue\"),\nbut provides a less error prone implementation.",
"id": "GHSA-89f8-gjh9-jgr6",
"modified": "2025-12-16T15:30:46Z",
"published": "2025-12-16T15:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68220"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2572c358ee434ce4b994472cceeb4043cbff5bc5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3afeb909c3e2e0eb19b1e20506196e5f2d9c2259"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8427218ecbd7f8559c37972e66cb0fa06e82353b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/90a88306eb874fe4bbdd860e6c9787f5bbc588b5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/952637c5b9be64539cd0e13ef88db71a1df46373"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/af6b10a13fc0aee37df4a8292414cc055c263fa3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f9608637ecc165d7d6341df105aee44691461fb9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fbb53727ca789a8d27052aab4b77ca9e2a0fae2b"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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