CVE-2026-98212mmc: hsq: Fix use-after-free in retry work
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: mmc: hsq: Fix use-after-free in retry work mmc_hsq_pump_requests() queues retry_work when request_atomic() returns -EBUSY; today sdhci-sprd is the only consumer that implements request_atomic(). The work is embedded in a devm-allocated mmc_hsq, but is never cancelled during driver removal. Work still pending at unbind can therefore run after the devm allocation has been released and dereference hsq->mmc and hsq->mrq. Use devm_work_autocancel() to cancel and drain retry_work before the devm allocation is released. By the time devres cleanup begins, mmc_remove_host() has already stopped the host, so no new requests can arm the work. This issue was found by an in-house static analysis tool.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6db96e5810e0a6a345b7d78549de7676ae5b2662 before c50d6515bffb148c2c12be6d587ec201dfab4c34; from 6db96e5810e0a6a345b7d78549de7676ae5b2662 before df2eb59fd9eb33663dc1053f5a4ed851e0aa1f67; from 6db96e5810e0a6a345b7d78549de7676ae5b2662 before 8439bf262ce3267bcfee29d3c61605f1731a2271; from 6db96e5810e0a6a345b7d78549de7676ae5b2662 before 45341b341642c377192c95e4d48e0a859cf85f42; 6db96e5810e0a6a345b7d78549de7676ae5b2662 builds before 5d132990475f02cfa1debe03d50b479432864ebd | CNA record |
References
- https://git.kernel.org/stable/c/c50d6515bffb148c2c12be6d587ec201dfab4c34
- https://git.kernel.org/stable/c/df2eb59fd9eb33663dc1053f5a4ed851e0aa1f67
- https://git.kernel.org/stable/c/8439bf262ce3267bcfee29d3c61605f1731a2271
- https://git.kernel.org/stable/c/45341b341642c377192c95e4d48e0a859cf85f42
- https://git.kernel.org/stable/c/5d132990475f02cfa1debe03d50b479432864ebd
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.