GHSA-PJQW-98XM-C848
Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-19 18:32In the Linux kernel, the following vulnerability has been resolved:
media: meson: vdec: Fix memory leak in error path of vdec_open
The vdec_open() function previously jumped directly to err_m2m_release when vdec_init_ctrls() failed, skipping release of the m2m context. This caused a resource leak.
Fix it by introducing a proper err_m2m_ctx_release label that calls v4l2_m2m_ctx_release(sess->m2m_ctx) before releasing the m2m device.
This was identified via kmemleak: unreferenced object 0xffff0000205d6878 (size 8): comm "v4l_id", pid 5289, jiffies 4294938580 hex dump (first 8 bytes): 40 d2 49 18 00 00 ff ff @.I..... backtrace (crc d3204599): kmemleak_alloc+0xc8/0xf0 __kvmalloc_node_noprof+0x60c/0x850 v4l2_ctrl_handler_init_class+0x1b4/0x2e8 [videodev] vdec_open+0x1f4/0x788 [meson_vdec] v4l2_open+0x144/0x460 [videodev] chrdev_open+0x1ac/0x500 do_dentry_open+0x3f0/0xfe8 vfs_open+0x68/0x320 do_open+0x2d8/0x9a8 path_openat+0x1d0/0x4f0 do_filp_open+0x190/0x380 do_sys_openat2+0xf8/0x1b0 __arm64_sys_openat+0x13c/0x1e8 invoke_syscall+0xdc/0x268 el0_svc_common.constprop.0+0x178/0x258 do_el0_svc+0x4c/0x70
{
"affected": [],
"aliases": [
"CVE-2026-68223"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-10T13:20:10Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: meson: vdec: Fix memory leak in error path of vdec_open\n\nThe vdec_open() function previously jumped directly to\nerr_m2m_release when vdec_init_ctrls() failed, skipping\nrelease of the m2m context. This caused a resource leak.\n\nFix it by introducing a proper err_m2m_ctx_release label\nthat calls v4l2_m2m_ctx_release(sess-\u003em2m_ctx) before\nreleasing the m2m device.\n\nThis was identified via kmemleak:\nunreferenced object 0xffff0000205d6878 (size 8):\n comm \"v4l_id\", pid 5289, jiffies 4294938580\n hex dump (first 8 bytes):\n 40 d2 49 18 00 00 ff ff @.I.....\n backtrace (crc d3204599):\n kmemleak_alloc+0xc8/0xf0\n __kvmalloc_node_noprof+0x60c/0x850\n v4l2_ctrl_handler_init_class+0x1b4/0x2e8 [videodev]\n vdec_open+0x1f4/0x788 [meson_vdec]\n v4l2_open+0x144/0x460 [videodev]\n chrdev_open+0x1ac/0x500\n do_dentry_open+0x3f0/0xfe8\n vfs_open+0x68/0x320\n do_open+0x2d8/0x9a8\n path_openat+0x1d0/0x4f0\n do_filp_open+0x190/0x380\n do_sys_openat2+0xf8/0x1b0\n __arm64_sys_openat+0x13c/0x1e8\n invoke_syscall+0xdc/0x268\n el0_svc_common.constprop.0+0x178/0x258\n do_el0_svc+0x4c/0x70",
"id": "GHSA-pjqw-98xm-c848",
"modified": "2026-08-19T18:32:11Z",
"published": "2026-08-10T15:33:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68223"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1391b75bf0119b5d37f1c1c3078d452a01967f9b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2cf0171ad594860e31723c671e37824ce12c01ea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5f97120d1a50c9efffe54425fac42bb7ef13ac86"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/940f161f734b25f175a95d2684c2021f6323693a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/99f3527bd1a27ff798d59177ed045b0dd87deaef"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c6cd08a71a630f19b10c318e76e3c56e1dd10e00"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d9058a19731036c03a779bfe8c3ca0d9aa198599"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fb77d6f4580f316c9148b942af0028ee489d121e"
}
],
"schema_version": "1.4.0",
"severity": []
}
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