GHSA-V32H-7447-3J7R
Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-06-25 21:31In the Linux kernel, the following vulnerability has been resolved:
net: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()
ocelot_port_xmit_inj() calls ocelot_can_inject() and ocelot_port_inject_frame() without holding the injection group lock. Both functions contain lockdep_assert_held() for the injection lock, and the correct caller felix_port_deferred_xmit() properly acquires the lock using ocelot_lock_inj_grp() before calling these functions.
Add ocelot_lock_inj_grp()/ocelot_unlock_inj_grp() around the register injection path to fix the missing lock protection. The FDMA path is not affected as it uses its own locking mechanism.
{
"affected": [],
"aliases": [
"CVE-2026-45849"
],
"database_specific": {
"cwe_ids": [
"CWE-667"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-27T14:16:56Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()\n\nocelot_port_xmit_inj() calls ocelot_can_inject() and\nocelot_port_inject_frame() without holding the injection group lock.\nBoth functions contain lockdep_assert_held() for the injection lock,\nand the correct caller felix_port_deferred_xmit() properly acquires\nthe lock using ocelot_lock_inj_grp() before calling these functions.\n\nAdd ocelot_lock_inj_grp()/ocelot_unlock_inj_grp() around the register\ninjection path to fix the missing lock protection. The FDMA path is not\naffected as it uses its own locking mechanism.",
"id": "GHSA-v32h-7447-3j7r",
"modified": "2026-06-25T21:31:18Z",
"published": "2026-05-27T15:33:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45849"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/026f6513c5880c2c89e38ad66bbec2868f978605"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0b217a40156f497e09dd20d3f7baec40c785f386"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/51c32ae7fae14552d79f7139614b77c1bbd57a48"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/63da961381e0d979459dede713001f8452364477"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7ac58d8832802ec89baa7539e13e6d58a88cce04"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cc1b179f778f98270bdbbb48d183b4b6427ae198"
}
],
"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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