GHSA-JWMJ-482Q-J9C2
Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30In the Linux kernel, the following vulnerability has been resolved:
RDMA/srpt: Add a check for valid 'mad_agent' pointer
When unregistering MAD agent, srpt module has a non-null check for 'mad_agent' pointer before invoking ib_unregister_mad_agent(). This check can pass if 'mad_agent' variable holds an error value. The 'mad_agent' can have an error value for a short window when srpt_add_one() and srpt_remove_one() is executed simultaneously.
In srpt module, added a valid pointer check for 'sport->mad_agent' before unregistering MAD agent.
This issue can hit when RoCE driver unregisters ib_device
Stack Trace:
BUG: kernel NULL pointer dereference, address: 000000000000004d PGD 145003067 P4D 145003067 PUD 2324fe067 PMD 0 Oops: 0002 [#1] PREEMPT SMP NOPTI CPU: 10 PID: 4459 Comm: kworker/u80:0 Kdump: loaded Tainted: P Hardware name: Dell Inc. PowerEdge R640/06NR82, BIOS 2.5.4 01/13/2020 Workqueue: bnxt_re bnxt_re_task [bnxt_re] RIP: 0010:_raw_spin_lock_irqsave+0x19/0x40 Call Trace: ib_unregister_mad_agent+0x46/0x2f0 [ib_core] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready ? __schedule+0x20b/0x560 srpt_unregister_mad_agent+0x93/0xd0 [ib_srpt] srpt_remove_one+0x20/0x150 [ib_srpt] remove_client_context+0x88/0xd0 [ib_core] bond0: (slave p2p1): link status definitely up, 100000 Mbps full duplex disable_device+0x8a/0x160 [ib_core] bond0: active interface up! ? kernfs_name_hash+0x12/0x80 (NULL device ): Bonding Info Received: rdev: 000000006c0b8247 __ib_unregister_device+0x42/0xb0 [ib_core] (NULL device ): Master: mode: 4 num_slaves:2 ib_unregister_device+0x22/0x30 [ib_core] (NULL device *): Slave: id: 105069936 name:p2p1 link:0 state:0 bnxt_re_stopqps_and_ib_uninit+0x83/0x90 [bnxt_re] bnxt_re_alloc_lag+0x12e/0x4e0 [bnxt_re]
{
"affected": [],
"aliases": [
"CVE-2023-54274"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-30T13:16:16Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srpt: Add a check for valid \u0027mad_agent\u0027 pointer\n\nWhen unregistering MAD agent, srpt module has a non-null check\nfor \u0027mad_agent\u0027 pointer before invoking ib_unregister_mad_agent().\nThis check can pass if \u0027mad_agent\u0027 variable holds an error value.\nThe \u0027mad_agent\u0027 can have an error value for a short window when\nsrpt_add_one() and srpt_remove_one() is executed simultaneously.\n\nIn srpt module, added a valid pointer check for \u0027sport-\u003emad_agent\u0027\nbefore unregistering MAD agent.\n\nThis issue can hit when RoCE driver unregisters ib_device\n\nStack Trace:\n------------\nBUG: kernel NULL pointer dereference, address: 000000000000004d\nPGD 145003067 P4D 145003067 PUD 2324fe067 PMD 0\nOops: 0002 [#1] PREEMPT SMP NOPTI\nCPU: 10 PID: 4459 Comm: kworker/u80:0 Kdump: loaded Tainted: P\nHardware name: Dell Inc. PowerEdge R640/06NR82, BIOS 2.5.4 01/13/2020\nWorkqueue: bnxt_re bnxt_re_task [bnxt_re]\nRIP: 0010:_raw_spin_lock_irqsave+0x19/0x40\nCall Trace:\n ib_unregister_mad_agent+0x46/0x2f0 [ib_core]\n IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready\n ? __schedule+0x20b/0x560\n srpt_unregister_mad_agent+0x93/0xd0 [ib_srpt]\n srpt_remove_one+0x20/0x150 [ib_srpt]\n remove_client_context+0x88/0xd0 [ib_core]\n bond0: (slave p2p1): link status definitely up, 100000 Mbps full duplex\n disable_device+0x8a/0x160 [ib_core]\n bond0: active interface up!\n ? kernfs_name_hash+0x12/0x80\n (NULL device *): Bonding Info Received: rdev: 000000006c0b8247\n __ib_unregister_device+0x42/0xb0 [ib_core]\n (NULL device *): Master: mode: 4 num_slaves:2\n ib_unregister_device+0x22/0x30 [ib_core]\n (NULL device *): Slave: id: 105069936 name:p2p1 link:0 state:0\n bnxt_re_stopqps_and_ib_uninit+0x83/0x90 [bnxt_re]\n bnxt_re_alloc_lag+0x12e/0x4e0 [bnxt_re]",
"id": "GHSA-jwmj-482q-j9c2",
"modified": "2025-12-30T15:30:34Z",
"published": "2025-12-30T15:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54274"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/00cc21e32ea1b8ebbabf5d645da9378d986bf8ba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4323aaedeba32076e652aad056afd7885bb96bb7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5f6ef2a574b0e0e0ea46ed0022575442df9d0bf9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8ec6acdb9b6a80eeb13e778dfedb5d72a88f14fe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b713623bfef8cb1df9c769a3887fa10db63d1c54"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eca5cd9474cd26d62f9756f536e2e656d3f62f3a"
}
],
"schema_version": "1.4.0",
"severity": []
}
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