CVE-2024-46689soc: qcom: cmd-db: Map shared memory as WC, not WB
- 5.5MediumCVSS base score
- 0.25%Exploitation in 30 daysEPSS · top 83% 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: soc: qcom: cmd-db: Map shared memory as WC, not WB Linux does not write into cmd-db region. This region of memory is write protected by XPU. XPU may sometime falsely detect clean cache eviction as "write" into the write protected region leading to secure interrupt which causes an endless loop somewhere in Trust Zone. The only reason it is working right now is because Qualcomm Hypervisor maps the same region as Non-Cacheable memory in Stage 2 translation tables. The issue manifests if we want to use another hypervisor (like Xen or KVM), which does not know anything about those specific mappings. Changing the mapping of cmd-db memory from MEMREMAP_WB to MEMREMAP_WT/WC removes dependency on correct mappings in Stage 2 tables. This patch fixes the issue by updating the mapping to MEMREMAP_WC. I tested this on SA8155P with Xen.
Timeline
ID reserved
By Linux
- 2 days later
· 2 days later
Published
- 20 months later
· 20 months 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 83% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 312416d9171a1460b7ed8d182b5b540c910ce80d – < 0ee9594c974368a17e85a431e9fe1c14fb65c278
- affected 312416d9171a1460b7ed8d182b5b540c910ce80d – < f5a5a5a0e95f36e2792d48e6e4b64e665eb01374
- affected 312416d9171a1460b7ed8d182b5b540c910ce80d – < eaff392c1e34fb77cc61505a31b0191e5e46e271
- affected 312416d9171a1460b7ed8d182b5b540c910ce80d – < d9d48d70e922b272875cda60d2ada89291c840cf
- affected 312416d9171a1460b7ed8d182b5b540c910ce80d – < ef80520be0ff78ae5ed44cb6eee1525e65bebe70
- affected 312416d9171a1460b7ed8d182b5b540c910ce80d – < 62c2d63605ca25b5db78a347ed303c0a0a77d5b4
- affected 312416d9171a1460b7ed8d182b5b540c910ce80d – < f9bb896eab221618927ae6a2f1d566567999839d
- affected 4.18
- unaffected < 4.18
- unaffected 5.4.283 – ≤ 5.4.*
- unaffected 5.10.225 – ≤ 5.10.*
- unaffected 5.15.166 – ≤ 5.15.*
- unaffected 6.1.108 – ≤ 6.1.*
- unaffected 6.6.49 – ≤ 6.6.*
- unaffected 6.10.8 – ≤ 6.10.*
- unaffected 6.11 – ≤ *
References
References9
- https://git.kernel.org/stable/c/0ee9594c974368a17e85a431e9fe1c14fb65c278 (opens in a new tab)
- https://git.kernel.org/stable/c/f5a5a5a0e95f36e2792d48e6e4b64e665eb01374 (opens in a new tab)
- https://git.kernel.org/stable/c/eaff392c1e34fb77cc61505a31b0191e5e46e271 (opens in a new tab)
- https://git.kernel.org/stable/c/d9d48d70e922b272875cda60d2ada89291c840cf (opens in a new tab)
- https://git.kernel.org/stable/c/ef80520be0ff78ae5ed44cb6eee1525e65bebe70 (opens in a new tab)
- https://git.kernel.org/stable/c/62c2d63605ca25b5db78a347ed303c0a0a77d5b4 (opens in a new tab)
- https://git.kernel.org/stable/c/f9bb896eab221618927ae6a2f1d566567999839d (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html (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-2024-41950 (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-2024-46689)Record last updated .