ghsa-984g-3ggq-r83h
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()
If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we attempt to dereference it in tcm_loop_tpg_address_show() we will get a segfault, see below for an example. So, check tl_hba->sh before dereferencing it.
Unable to allocate struct scsi_host BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop] ... Call Trace: configfs_read_iter+0x12d/0x1d0 [configfs] vfs_read+0x1b5/0x300 ksys_read+0x6f/0xf0 ...
{
"affected": [],
"aliases": [
"CVE-2025-68229"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-16T14:15:57Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()\n\nIf the allocation of tl_hba-\u003esh fails in tcm_loop_driver_probe() and we\nattempt to dereference it in tcm_loop_tpg_address_show() we will get a\nsegfault, see below for an example. So, check tl_hba-\u003esh before\ndereferencing it.\n\n Unable to allocate struct scsi_host\n BUG: kernel NULL pointer dereference, address: 0000000000000194\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1\n Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024\n RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]\n...\n Call Trace:\n \u003cTASK\u003e\n configfs_read_iter+0x12d/0x1d0 [configfs]\n vfs_read+0x1b5/0x300\n ksys_read+0x6f/0xf0\n...",
"id": "GHSA-984g-3ggq-r83h",
"modified": "2025-12-16T15:30:46Z",
"published": "2025-12-16T15:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68229"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1c9ba455b5073253ceaadae4859546e38e8261fe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/72e8831079266749a7023618a0de2f289a9dced6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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