ghsa-rx53-49wx-mxjw
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()
BUG: kernel NULL pointer dereference, address: 00000000000002ec PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP PTI CPU: 28 UID: 0 PID: 343 Comm: kworker/28:1 Kdump: loaded Tainted: G OE 6.17.0-rc2+ #9 NONE Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Workqueue: smc_hs_wq smc_listen_work [smc] RIP: 0010:smc_ib_is_sg_need_sync+0x9e/0xd0 [smc] ... Call Trace: smcr_buf_map_link+0x211/0x2a0 [smc] __smc_buf_create+0x522/0x970 [smc] smc_buf_create+0x3a/0x110 [smc] smc_find_rdma_v2_device_serv+0x18f/0x240 [smc] ? smc_vlan_by_tcpsk+0x7e/0xe0 [smc] smc_listen_find_device+0x1dd/0x2b0 [smc] smc_listen_work+0x30f/0x580 [smc] process_one_work+0x18c/0x340 worker_thread+0x242/0x360 kthread+0xe7/0x220 ret_from_fork+0x13a/0x160 ret_from_fork_asm+0x1a/0x30
If the software RoCE device is used, ibdev->dma_device is a null pointer. As a result, the problem occurs. Null pointer detection is added to prevent problems.
{
"affected": [],
"aliases": [
"CVE-2025-39857"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-19T16:15:44Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()\n\nBUG: kernel NULL pointer dereference, address: 00000000000002ec\nPGD 0 P4D 0\nOops: Oops: 0000 [#1] SMP PTI\nCPU: 28 UID: 0 PID: 343 Comm: kworker/28:1 Kdump: loaded Tainted: G OE 6.17.0-rc2+ #9 NONE\nTainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\nWorkqueue: smc_hs_wq smc_listen_work [smc]\nRIP: 0010:smc_ib_is_sg_need_sync+0x9e/0xd0 [smc]\n...\nCall Trace:\n \u003cTASK\u003e\n smcr_buf_map_link+0x211/0x2a0 [smc]\n __smc_buf_create+0x522/0x970 [smc]\n smc_buf_create+0x3a/0x110 [smc]\n smc_find_rdma_v2_device_serv+0x18f/0x240 [smc]\n ? smc_vlan_by_tcpsk+0x7e/0xe0 [smc]\n smc_listen_find_device+0x1dd/0x2b0 [smc]\n smc_listen_work+0x30f/0x580 [smc]\n process_one_work+0x18c/0x340\n worker_thread+0x242/0x360\n kthread+0xe7/0x220\n ret_from_fork+0x13a/0x160\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nIf the software RoCE device is used, ibdev-\u003edma_device is a null pointer.\nAs a result, the problem occurs. Null pointer detection is added to\nprevent problems.",
"id": "GHSA-rx53-49wx-mxjw",
"modified": "2025-09-22T21:30:18Z",
"published": "2025-09-22T21:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39857"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0cdf1fd8fc59d44a48c694324611136910301ef9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/34f17cbe027050b8d5316ea1b6f9bd7c378e92de"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba1e9421cf1a8369d25c3832439702a015d6b5f9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eb929910bd4b4165920fa06a87b22cc6cae92e0e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f18d9b3abf9c6587372cc702f963a7592277ed56"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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