Description
In the Linux kernel, the following vulnerability has been resolved:
mmc: via-sdmmc: stop card-detect handling on probe failure
request_irq() registers the SD card-detect interrupt and the probe enables it before mmc_add_host() runs. If mmc_add_host() fails, the error path only unmaps the registers and returns: the interrupt stays registered, so the handler keeps running against the host once it is freed. via_sdc_isr() dereferences sdhost and its MMIO base and schedules carddet_work, which via_sdc_card_detect() also runs against freed memory through its container_of() dereference.
Add a probe-error path that disables and frees the interrupt and cancels carddet_work before unmapping. carddet_work can re-enable the device interrupt via via_reset_pcictrl(), which restores PCIINTCTRL, so mask it again after cancelling the work.
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 | >= 63400da6cd37a9793c19bb6aed7131b58b975a04, < 5bb5327b92aae17e91c7228953c350a6ee3c94e8; >= 0959cc1685eb19774300d43ef25e318b457b156b, < d045596706d1b25d38af4a79980b017639fea9d1; >= ba91b413983a9235792523c6b9f7ba2586c4d75d, < 806409f12fdb14c9e4c56a64494c9b75f356cd49; >= e4e46fb61e3bb4628170810d3f2b996b709b90d9, < dde5b9c91e9fc64e54a2f186d3ae95868b4dbb02; >= e4e46fb61e3bb4628170810d3f2b996b709b90d9, < efe7f25dd27e35063477b4b0e7eed3675669fd99; >= e4e46fb61e3bb4628170810d3f2b996b709b90d9, < 2550f89589caad7402d618d7dffc038582c94b6b; >= e4e46fb61e3bb4628170810d3f2b996b709b90d9, < c2b8a624911999399cc14822fec3e35032b3cee4; >= e4e46fb61e3bb4628170810d3f2b996b709b90d9, < 088eaa92fcebaa6b957ccf9635afdf39643a577d; 076bcd2c93e16b05c10564e299d6e5d26a766d00; 12b8e81b77c05c658efd9cde3585bbd65ae39b59; 95025a8dd0ec015872f6c16473fe04d6264e68ca; f59ef2a47a228e51322ad76752a55a8917c56e38; 0ec94795114edc7e24ec71849dce42bfa61dafa3; >= 5.10.163, < 5.10.270; >= 5.15.86, < 5.15.221; >= 6.1.2, < 6.1.188; >= 4.9.337, < 4.10; >= 4.14.303, < 4.15; >= 4.19.270, < 4.20; >= 5.4.229, < 5.5 |
| Linux | Linux | 6.2 |
References
- https://git.kernel.org/stable/c/088eaa92fcebaa6b957ccf9635afdf39643a577d
- https://git.kernel.org/stable/c/2550f89589caad7402d618d7dffc038582c94b6b
- https://git.kernel.org/stable/c/5bb5327b92aae17e91c7228953c350a6ee3c94e8
- https://git.kernel.org/stable/c/806409f12fdb14c9e4c56a64494c9b75f356cd49
- https://git.kernel.org/stable/c/c2b8a624911999399cc14822fec3e35032b3cee4
- https://git.kernel.org/stable/c/d045596706d1b25d38af4a79980b017639fea9d1
- https://git.kernel.org/stable/c/dde5b9c91e9fc64e54a2f186d3ae95868b4dbb02
- https://git.kernel.org/stable/c/efe7f25dd27e35063477b4b0e7eed3675669fd99
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received