Description
In the Linux kernel, the following vulnerability has been resolved:
mmc: via-sdmmc: cancel card-detect work on remove
Disabling the device interrupt and freeing the IRQ prevents new card-detect work from being queued, but carddet_work already queued by the handler can still run after via_sd_remove() returns. via_sdc_card_detect() recovers the host through container_of() and dereferences its MMIO base; once remove() returns the host can be freed, so that work would touch freed memory.
Cancel carddet_work after freeing the IRQ and before cancelling finish_bh_work, which the card-detect handler can also queue. carddet_work can re-enable the interrupt through via_reset_pcictrl(); mask it again afterwards.
This issue was found by an in-house static analysis tool and confirmed by manual code review.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 28e8e9e1f3bdb75b611ea14c39775455528c4012; >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < a32603f9b4dd0a1c3ea5845eec7c95f5f8741b3d; >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 3ee1b5c8618a26811840bf9f45cb3120dac1e273; >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 55d71c70f11d9f92c7d2653774001e98cb509deb; >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 0a3c70191868fb007c03ff79693ad4e4b3fdcbb8; >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < f7ff3027ef004a331ef911a4886f12bc2e996037; >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < eaca730c6f5e3609df62a0469fb789235a93d276; >= f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 57e5d877f898d5e5c9d672a77bb6bdd24f0d9bf5 |
| Linux | Linux | 2.6.31 |
References
- https://git.kernel.org/stable/c/0a3c70191868fb007c03ff79693ad4e4b3fdcbb8
- https://git.kernel.org/stable/c/28e8e9e1f3bdb75b611ea14c39775455528c4012
- https://git.kernel.org/stable/c/3ee1b5c8618a26811840bf9f45cb3120dac1e273
- https://git.kernel.org/stable/c/55d71c70f11d9f92c7d2653774001e98cb509deb
- https://git.kernel.org/stable/c/57e5d877f898d5e5c9d672a77bb6bdd24f0d9bf5
- https://git.kernel.org/stable/c/a32603f9b4dd0a1c3ea5845eec7c95f5f8741b3d
- https://git.kernel.org/stable/c/eaca730c6f5e3609df62a0469fb789235a93d276
- https://git.kernel.org/stable/c/f7ff3027ef004a331ef911a4886f12bc2e996037
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 30, 2026
- NVD status
- Received