ghsa-8xqr-m9jg-qc5f
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
loop: Fix use-after-free issues
do_req_filebacked() calls blk_mq_complete_request() synchronously or asynchronously when using asynchronous I/O unless memory allocation fails. Hence, modify loop_handle_cmd() such that it does not dereference 'cmd' nor 'rq' after do_req_filebacked() finished unless we are sure that the request has not yet been completed. This patch fixes the following kernel crash:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000054 Call trace: css_put.42938+0x1c/0x1ac loop_process_work+0xc8c/0xfd4 loop_rootcg_workfn+0x24/0x34 process_one_work+0x244/0x558 worker_thread+0x400/0x8fc kthread+0x16c/0x1e0 ret_from_fork+0x10/0x20
{
"affected": [],
"aliases": [
"CVE-2023-53111"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-02T16:15:30Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nloop: Fix use-after-free issues\n\ndo_req_filebacked() calls blk_mq_complete_request() synchronously or\nasynchronously when using asynchronous I/O unless memory allocation fails.\nHence, modify loop_handle_cmd() such that it does not dereference \u0027cmd\u0027 nor\n\u0027rq\u0027 after do_req_filebacked() finished unless we are sure that the request\nhas not yet been completed. This patch fixes the following kernel crash:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000054\nCall trace:\n css_put.42938+0x1c/0x1ac\n loop_process_work+0xc8c/0xfd4\n loop_rootcg_workfn+0x24/0x34\n process_one_work+0x244/0x558\n worker_thread+0x400/0x8fc\n kthread+0x16c/0x1e0\n ret_from_fork+0x10/0x20",
"id": "GHSA-8xqr-m9jg-qc5f",
"modified": "2025-05-02T18:31:37Z",
"published": "2025-05-02T18:31:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53111"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/407badf73ec9fb0d5744bf2ca1745c1818aa222f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6917395c4667cfb607ed8bf1826205a59414657c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b0cb770f5d7b1ff40bea7ca385438ee94570eec"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e3fda704903f6d1fc351412f1bc6620333959ada"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.