Answer in brief
CVE-2026-89440 records a High severity (CVSS 7.8) 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), 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.
CVSS is 7.8. 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), 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 |
| Linux/Linuxgeneric | >=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 || >=6.0.16 <6.1 | 5bb5327b92aae17e91c7228953c350a6ee3c94e8, d045596706d1b25d38af4a79980b017639fea9d1, 806409f12fdb14c9e4c56a64494c9b75f356cd49, dde5b9c91e9fc64e54a2f186d3ae95868b4dbb02, efe7f25dd27e35063477b4b0e7eed3675669fd99, 2550f89589caad7402d618d7dffc038582c94b6b, c2b8a624911999399cc14822fec3e35032b3cee4, 088eaa92fcebaa6b957ccf9635afdf39643a577d, 5.10.270, 5.15.221, 6.1.188, 4.10, 4.15, 4.20, 5.5, 6.1 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 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.