CVE-2024-46689
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
soc: qcom: cmd-db: Map shared memory as WC, not WB
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 312416d9171a1460b7ed8d182b5b540c910ce80d | affected | git | 0ee9594c974368a17e85a431e9fe1c14fb65c278 | Unavailable | None listed |
| 312416d9171a1460b7ed8d182b5b540c910ce80d | affected | git | f5a5a5a0e95f36e2792d48e6e4b64e665eb01374 | Unavailable | None listed |
| 312416d9171a1460b7ed8d182b5b540c910ce80d | affected | git | eaff392c1e34fb77cc61505a31b0191e5e46e271 | Unavailable | None listed |
| 312416d9171a1460b7ed8d182b5b540c910ce80d | affected | git | d9d48d70e922b272875cda60d2ada89291c840cf | Unavailable | None listed |
| 312416d9171a1460b7ed8d182b5b540c910ce80d | affected | git | ef80520be0ff78ae5ed44cb6eee1525e65bebe70 | Unavailable | None listed |
| 312416d9171a1460b7ed8d182b5b540c910ce80d | affected | git | 62c2d63605ca25b5db78a347ed303c0a0a77d5b4 | Unavailable | None listed |
| 312416d9171a1460b7ed8d182b5b540c910ce80d | affected | git | f9bb896eab221618927ae6a2f1d566567999839d | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.18 | Unavailable | None listed |
| 5.4.283 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.225 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.166 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.108 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.49 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.10.8 | unaffected | semver | Unavailable | 6.10.* | None listed |
| 6.11 | unaffected | original_commit_for_fix | Unavailable | * | None listed |