CVE-2025-38174

thunderbolt: Do not double dequeue a configuration request

MEDIUM

5.5

CVSS Score

Published: July 4, 2025 at 10:39 AM UTC

Updated: August 5, 2026 at 12:44 PM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

3.17 ≤ v < 5.10.2393.17 ≤ v < 5.15.1863.17 ≤ v < 5.4.2953.17 ≤ v < 6.1.1423.17 ≤ v < 6.12.333.17 ≤ v < 6.14.113.17 ≤ v < 6.15.23.17 ≤ v < 6.163.17 ≤ v < 6.6.945.11 ≤ v < 5.15.1865.16 ≤ v < 6.1.1425.5 ≤ v < 5.10.2396.13 ≤ v < 6.14.116.15 ≤ v < 6.15.26.2 ≤ v < 6.6.946.7 ≤ v < 6.12.3316603153666d22df544ae9f9b3764fd18da28eeb3.17

Vendor states this is fixed in 0771bcbe2f6e5d5f263cf466efe571d2754a46da (fixed)

Vendor states this is fixed in 0a3011d47dbc92a33621861c423cb64833d7fe57 (fixed)

Vendor states this is fixed in 0f73628e9da1ee39daf5f188190cdbaee5e0c98c (fixed)

Vendor states this is fixed in 2f62eda4d974c26bc595425eafd429067541f2c9 (fixed)

Vendor states this is fixed in 5a057f261539720165d03d85024da2b52e67f63d (fixed)

Vendor states this is fixed in 85286e634ebbaf9c0fb1cdf580add2f33fc7628c (fixed)

Vendor states this is fixed in cdb4feab2f39e75a66239e3a112beced279612a8 (fixed)

Vendor states this is fixed in e49e994cd83705f7ca30eda1e304abddfd96a37a (fixed)

Vendor states this is fixed in eb2d5e794fb966b3ef8bde99eb8561446a53509f (fixed)

Vendor states this is fixed in 3.17 (unaffected)

Vendor states this is fixed in 5.10.239 (unaffected)

Vendor states this is fixed in 5.15.186 (unaffected)