7.8

CVE-2026-89441: mmc: via-sdmmc: cancel card-detect work on remove

Received
AliasesUBUNTU-CVE-2026-89441DEBIAN-CVE-2026-89441
Published 11-09-2026Last modified 21-10-2026

Vulnerability summary

CVE-2026-89441 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.18%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:11805-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

Increase +0.05 pp

From 0.13% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.113-1 | < 7.2.6-1
Linux1 product
  • linux≥ f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 55d71c70f11d9f92c7d2653774001e98cb509deb | ≥ f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 0a3c70191868fb007c03ff79693ad4e4b3fdcbb8 | ≥ f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < f7ff3027ef004a331ef911a4886f12bc2e996037 | ≥ f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < eaca730c6f5e3609df62a0469fb789235a93d276 | ≥ f0bf7f61b8405224bc52fc9a3ccd167a68126e00, < 57e5d877f898d5e5c9d672a77bb6bdd24f0d9bf5 | 2.6.31

3 vendors · 171 products

References

9 links