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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
16603153666d22df544ae9f9b3764fd18da28eeb to < e49e994cd83705f7ca30eda1e304abddfd96a37aaffected16603153666d22df544ae9f9b3764fd18da28eeb to < 0a3011d47dbc92a33621861c423cb64833d7fe57affected16603153666d22df544ae9f9b3764fd18da28eeb to < 2f62eda4d974c26bc595425eafd429067541f2c9affected16603153666d22df544ae9f9b3764fd18da28eeb to < 85286e634ebbaf9c0fb1cdf580add2f33fc7628caffected16603153666d22df544ae9f9b3764fd18da28eeb to < 5a057f261539720165d03d85024da2b52e67f63daffected16603153666d22df544ae9f9b3764fd18da28eeb to < eb2d5e794fb966b3ef8bde99eb8561446a53509faffected16603153666d22df544ae9f9b3764fd18da28eeb to < 0771bcbe2f6e5d5f263cf466efe571d2754a46daaffected16603153666d22df544ae9f9b3764fd18da28eeb to < cdb4feab2f39e75a66239e3a112beced279612a8affected16603153666d22df544ae9f9b3764fd18da28eeb to < 0f73628e9da1ee39daf5f188190cdbaee5e0c98caffected
Linux Linux
Default version status: affected
3.17affected0 to < 3.17unaffected5.4.295 to ≤ 5.4.*unaffected5.10.239 to ≤ 5.10.*unaffected5.15.186 to ≤ 5.15.*unaffected6.1.142 to ≤ 6.1.*unaffected6.6.94 to ≤ 6.6.*unaffected6.12.33 to ≤ 6.12.*unaffected6.14.11 to ≤ 6.14.*unaffected6.15.2 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/e49e994cd83705f7ca30eda1e304abddfd96a37a ↗
- https://git.kernel.org/stable/c/0a3011d47dbc92a33621861c423cb64833d7fe57 ↗
- https://git.kernel.org/stable/c/2f62eda4d974c26bc595425eafd429067541f2c9 ↗
- https://git.kernel.org/stable/c/85286e634ebbaf9c0fb1cdf580add2f33fc7628c ↗
- https://git.kernel.org/stable/c/5a057f261539720165d03d85024da2b52e67f63d ↗
- https://git.kernel.org/stable/c/eb2d5e794fb966b3ef8bde99eb8561446a53509f ↗
- https://git.kernel.org/stable/c/0771bcbe2f6e5d5f263cf466efe571d2754a46da ↗
- https://git.kernel.org/stable/c/cdb4feab2f39e75a66239e3a112beced279612a8 ↗
- https://git.kernel.org/stable/c/0f73628e9da1ee39daf5f188190cdbaee5e0c98c ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗