ghsa-743c-jrqg-qcwf
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
padata: do not leak refcount in reorder_work
A recent patch that addressed a UAF introduced a reference count leak: the parallel_data refcount is incremented unconditionally, regardless of the return value of queue_work(). If the work item is already queued, the incremented refcount is never decremented.
Fix this by checking the return value of queue_work() and decrementing the refcount when necessary.
Resolves:
Unreferenced object 0xffff9d9f421e3d80 (size 192): comm "cryptomgr_probe", pid 157, jiffies 4294694003 hex dump (first 32 bytes): 80 8b cf 41 9f 9d ff ff b8 97 e0 89 ff ff ff ff ...A............ d0 97 e0 89 ff ff ff ff 19 00 00 00 1f 88 23 00 ..............#. backtrace (crc 838fb36): __kmalloc_cache_noprof+0x284/0x320 padata_alloc_pd+0x20/0x1e0 padata_alloc_shell+0x3b/0xa0 0xffffffffc040a54d cryptomgr_probe+0x43/0xc0 kthread+0xf6/0x1f0 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30
{
"affected": [],
"aliases": [
"CVE-2025-38031"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T10:15:35Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\npadata: do not leak refcount in reorder_work\n\nA recent patch that addressed a UAF introduced a reference count leak:\nthe parallel_data refcount is incremented unconditionally, regardless\nof the return value of queue_work(). If the work item is already queued,\nthe incremented refcount is never decremented.\n\nFix this by checking the return value of queue_work() and decrementing\nthe refcount when necessary.\n\nResolves:\n\nUnreferenced object 0xffff9d9f421e3d80 (size 192):\n comm \"cryptomgr_probe\", pid 157, jiffies 4294694003\n hex dump (first 32 bytes):\n 80 8b cf 41 9f 9d ff ff b8 97 e0 89 ff ff ff ff ...A............\n d0 97 e0 89 ff ff ff ff 19 00 00 00 1f 88 23 00 ..............#.\n backtrace (crc 838fb36):\n __kmalloc_cache_noprof+0x284/0x320\n padata_alloc_pd+0x20/0x1e0\n padata_alloc_shell+0x3b/0xa0\n 0xffffffffc040a54d\n cryptomgr_probe+0x43/0xc0\n kthread+0xf6/0x1f0\n ret_from_fork+0x2f/0x50\n ret_from_fork_asm+0x1a/0x30",
"id": "GHSA-743c-jrqg-qcwf",
"modified": "2025-06-18T12:30:32Z",
"published": "2025-06-18T12:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38031"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1a426abdf1c86882c9203dd8182f3b8274b89938"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1c65ae4988714716101555fe2b9830e33136d6fb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5300e487487d7a2e3e1e6e9d8f03ed9452e4019e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/584a729615fa92f4de45480efb7e569d14be1516"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cceb15864e1612ebfbc10ec4e4dcd19a10c0056c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d6ebcde6d4ecf34f8495fb30516645db3aea8993"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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