CVE-2025-38174
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…
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0771bcbe2f6e5d5f263cf466efe571d2754a46daPatch
- https://git.kernel.org/stable/c/0a3011d47dbc92a33621861c423cb64833d7fe57Patch
- https://git.kernel.org/stable/c/0f73628e9da1ee39daf5f188190cdbaee5e0c98cPatch
- https://git.kernel.org/stable/c/2f62eda4d974c26bc595425eafd429067541f2c9Patch
- https://git.kernel.org/stable/c/5a057f261539720165d03d85024da2b52e67f63dPatch
- https://git.kernel.org/stable/c/85286e634ebbaf9c0fb1cdf580add2f33fc7628cPatch
- https://git.kernel.org/stable/c/cdb4feab2f39e75a66239e3a112beced279612a8Patch
- https://git.kernel.org/stable/c/e49e994cd83705f7ca30eda1e304abddfd96a37aPatch
- https://git.kernel.org/stable/c/eb2d5e794fb966b3ef8bde99eb8561446a53509fPatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.