CVE-2025-38174

thunderbolt: Do not double dequeue a configuration request

State: Published
Severity: 8.8 High
Published: Jul 4, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Do not double dequeue a configuration request

Some of our devices crash in tb_cfg_request_dequeue():

general protection fault, probably for non-canonical address 0xdead000000000122

CPU: 6 PID: 91007 Comm: kworker/6:2 Tainted: G U W 6.6.65 RIP: 0010:tb_cfg_request_dequeue+0x2d/0xa0 Call Trace: <TASK> ? tb_cfg_request_dequeue+0x2d/0xa0 tb_cfg_request_work+0x33/0x80 worker_thread+0x386/0x8f0 kthread+0xed/0x110 ret_from_fork+0x38/0x50 ret_from_fork_asm+0x1b/0x30

The circumstances are unclear, however, the theory is that tb_cfg_request_work() can be scheduled twice for a request: first time via frame.callback from ring_work() and second time from tb_cfg_request(). Both times kworkers will execute tb_cfg_request_dequeue(), which results in double list_del() from the ctl->request_queue (the list poison deference hints at it: 0xdead000000000122).

Do not dequeue requests that don't have TB_CFG_REQUEST_ACTIVE bit set.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	16603153666d22df544ae9f9b3764fd18da28eeb to before e49e994cd83705f7ca30eda1e304abddfd96a37aAffected 16603153666d22df544ae9f9b3764fd18da28eeb to before 0a3011d47dbc92a33621861c423cb64833d7fe57Affected 16603153666d22df544ae9f9b3764fd18da28eeb to before 2f62eda4d974c26bc595425eafd429067541f2c9Affected 16603153666d22df544ae9f9b3764fd18da28eeb to before 85286e634ebbaf9c0fb1cdf580add2f33fc7628cAffected 16603153666d22df544ae9f9b3764fd18da28eeb to before 5a057f261539720165d03d85024da2b52e67f63dAffected 16603153666d22df544ae9f9b3764fd18da28eeb to before eb2d5e794fb966b3ef8bde99eb8561446a53509fAffected 16603153666d22df544ae9f9b3764fd18da28eeb to before 0771bcbe2f6e5d5f263cf466efe571d2754a46daAffected 16603153666d22df544ae9f9b3764fd18da28eeb to before cdb4feab2f39e75a66239e3a112beced279612a8Affected 16603153666d22df544ae9f9b3764fd18da28eeb to before 0f73628e9da1ee39daf5f188190cdbaee5e0c98cAffected
LinuxLinux	3.17Affected before 3.17Not affected 5.4.295 through 5.4.Not affected 5.10.239 through 5.10.Not affected 5.15.186 through 5.15.Not affected 6.1.142 through 6.1.Not affected 6.6.94 through 6.6.Not affected 6.12.33 through 6.12.Not affected 6.14.11 through 6.14.Not affected 6.15.2 through 6.15.Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

16603153666d22df544ae9f9b3764fd18da28eeb to before e49e994cd83705f7ca30eda1e304abddfd96a37aAffected
16603153666d22df544ae9f9b3764fd18da28eeb to before 0a3011d47dbc92a33621861c423cb64833d7fe57Affected
16603153666d22df544ae9f9b3764fd18da28eeb to before 2f62eda4d974c26bc595425eafd429067541f2c9Affected
16603153666d22df544ae9f9b3764fd18da28eeb to before 85286e634ebbaf9c0fb1cdf580add2f33fc7628cAffected
16603153666d22df544ae9f9b3764fd18da28eeb to before 5a057f261539720165d03d85024da2b52e67f63dAffected
16603153666d22df544ae9f9b3764fd18da28eeb to before eb2d5e794fb966b3ef8bde99eb8561446a53509fAffected
16603153666d22df544ae9f9b3764fd18da28eeb to before 0771bcbe2f6e5d5f263cf466efe571d2754a46daAffected
16603153666d22df544ae9f9b3764fd18da28eeb to before cdb4feab2f39e75a66239e3a112beced279612a8Affected
16603153666d22df544ae9f9b3764fd18da28eeb to before 0f73628e9da1ee39daf5f188190cdbaee5e0c98cAffected

LinuxLinux

3.17Affected
before 3.17Not affected
5.4.295 through 5.4.*Not affected
5.10.239 through 5.10.*Not affected
5.15.186 through 5.15.*Not affected
6.1.142 through 6.1.*Not affected
6.6.94 through 6.6.*Not affected
6.12.33 through 6.12.*Not affected
6.14.11 through 6.14.*Not affected
6.15.2 through 6.15.*Not affected
6.16 and laterNot affected

References

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