CVE-2026-90397
firmware: qcom: scm: Fix NULL dereference in IRQ handler before __scm is published
- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: scm: Fix NULL dereference in IRQ handler before __scm is published In qcom_scm_probe(), devm_request_threaded_irq() is called before smp_store_release(&__scm, scm). Two paths can dereference __scm before it is published, both causing a NULL pointer dereference. The IRQ handler receives scm via its data argument but passes only wq_ctx to qcom_scm_waitq_wakeup() and qcom_scm_get_completion(), which then dereference __scm directly. Thread scm through both functions so the IRQ handler path never touches __scm. Non-atomic SMC calls made during probe (e.g. from qcom_tzmem_init via qcom_scm_shm_bridge_enable) can return WAITQ_SLEEP, causing qcom_scm_wait_for_wq_completion() to run before __scm is published and dereference it. Add platform_set_drvdata(pdev, scm) early in probe and change qcom_scm_wait_for_wq_completion() to take the device pointer and use dev_get_drvdata() to reach scm, removing any dependency on __scm.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 34 days later
· 34 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 6bf32599223634294cdc6efb359ffaab1d68073c – < c9c1e3da0a206270e5df470ca1c82de52190d68c
- affected 6bf32599223634294cdc6efb359ffaab1d68073c – < b451f38cb7f5bca78484362347f039c08c94de95
- affected 6bf32599223634294cdc6efb359ffaab1d68073c – < 1d753df5899ec356272d08bc4718e82844e4bdf0
- affected 6bf32599223634294cdc6efb359ffaab1d68073c – < f312ef5026678f14caf1378c5f7fffdf667f9c81
- affected 6bf32599223634294cdc6efb359ffaab1d68073c – < 966d23c7e68ea32679275a7e3d2383181002c868
- affected 6.3
- unaffected < 6.3
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/c9c1e3da0a206270e5df470ca1c82de52190d68c (opens in a new tab)
- https://git.kernel.org/stable/c/b451f38cb7f5bca78484362347f039c08c94de95 (opens in a new tab)
- https://git.kernel.org/stable/c/1d753df5899ec356272d08bc4718e82844e4bdf0 (opens in a new tab)
- https://git.kernel.org/stable/c/f312ef5026678f14caf1378c5f7fffdf667f9c81 (opens in a new tab)
- https://git.kernel.org/stable/c/966d23c7e68ea32679275a7e3d2383181002c868 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-82058 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-90397)Record last updated .