cbcvebase.
CVE-2024-46689
published 2024-09-13

CVE-2024-46689: 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…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
14.6th percentile
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.

Affected

32 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
debianlinux-6.1< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
linuxlinux
linuxlinux>= 312416d9171a1460b7ed8d182b5b540c910ce80d < 0ee9594c974368a17e85a431e9fe1c14fb65c2780ee9594c974368a17e85a431e9fe1c14fb65c278
linuxlinux>= 312416d9171a1460b7ed8d182b5b540c910ce80d < f5a5a5a0e95f36e2792d48e6e4b64e665eb01374f5a5a5a0e95f36e2792d48e6e4b64e665eb01374
linuxlinux>= 312416d9171a1460b7ed8d182b5b540c910ce80d < eaff392c1e34fb77cc61505a31b0191e5e46e271eaff392c1e34fb77cc61505a31b0191e5e46e271
linuxlinux>= 312416d9171a1460b7ed8d182b5b540c910ce80d < d9d48d70e922b272875cda60d2ada89291c840cfd9d48d70e922b272875cda60d2ada89291c840cf
linuxlinux>= 312416d9171a1460b7ed8d182b5b540c910ce80d < ef80520be0ff78ae5ed44cb6eee1525e65bebe70ef80520be0ff78ae5ed44cb6eee1525e65bebe70
linuxlinux>= 312416d9171a1460b7ed8d182b5b540c910ce80d < 62c2d63605ca25b5db78a347ed303c0a0a77d5b462c2d63605ca25b5db78a347ed303c0a0a77d5b4
linuxlinux>= 312416d9171a1460b7ed8d182b5b540c910ce80d < f9bb896eab221618927ae6a2f1d566567999839df9bb896eab221618927ae6a2f1d566567999839d
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1
linuxlinux_kernel>= 0 < 6.1.112-16.1.112-1
linuxlinux_kernel>= 0 < 6.10.9-16.10.9-1
linuxlinux_kernel>= 0 < 6.10.9-16.10.9-1
linuxlinux_kernel>= 0 < 5.4.0-200.2205.4.0-200.220
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 4.18 < 5.4.2835.4.283
linuxlinux_kernel>= 5.11 < 5.15.1665.15.166
linuxlinux_kernel>= 5.16 < 6.1.1086.1.108
linuxlinux_kernel>= 5.5 < 5.10.2255.10.225
linuxlinux_kernel>= 6.2 < 6.6.496.6.49
linuxlinux_kernel>= 6.7 < 6.10.86.10.8
msrcazl3_kernel_6.6.47.1-1_on_azure_linux_3.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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