Answer in brief
CVE-2026-89440 records a Unknown severity vulnerability in mmc: via-sdmmc: stop card-detect handling on probe failure. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e4e46fb61e3bb4628170810d3f2b996b709b90d9 <efe7f25dd27e35063477b4b0e7eed3675669fd99 || >=e4e46fb61e3bb4628170810d3f2b996b709b90d9 <2550f89589caad7402d618d7dffc038582c94b6b || >=e4e46fb61e3bb4628170810d3f2b996b709b90d9 <c2b8a624911999399cc14822fec3e35032b3cee4 || >=e4e46fb61e3bb4628170810d3f2b996b709b90d9 <088eaa92fcebaa6b957ccf9635afdf39643a577d || 076bcd2c93e16b05c10564e299d6e5d26a766d00 || 12b8e81b77c05c658efd9cde3585bbd65ae39b59 || 95025a8dd0ec015872f6c16473fe04d6264e68ca || f59ef2a47a228e51322ad76752a55a8917c56e38 || 63400da6cd37a9793c19bb6aed7131b58b975a04 || 0959cc1685eb19774300d43ef25e318b457b156b || 0ec94795114edc7e24ec71849dce42bfa61dafa3 || ba91b413983a9235792523c6b9f7ba2586c4d75d || >=4.9.337 <4.10 || >=4.14.303 <4.15 || >=4.19.270 <4.20 || >=5.4.229 <5.5 || >=5.10.163 <5.11 || >=5.15.86 <5.16 || >=6.0.16 <6.1 || >=6.1.2 <6.2 | efe7f25dd27e35063477b4b0e7eed3675669fd99, 2550f89589caad7402d618d7dffc038582c94b6b, c2b8a624911999399cc14822fec3e35032b3cee4, 088eaa92fcebaa6b957ccf9635afdf39643a577d, 4.10, 4.15, 4.20, 5.5, 5.11, 5.16, 6.1, 6.2 |
| Linux/Linuxgeneric | 6.2 | Not reported |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.