5.5

CVE-2024-46689: linux Out-of-bounds Write

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-46689DEBIAN-CVE-2024-46689
Published 13-09-2024Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2024-46689 is a medium (CVSS 5.5) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 29 · Related 25
DLA-3912-1DLA-4008-1DSA-5782-1RHSA-2025:20518SUSE-SU-2024:3551-1SUSE-SU-2024:3553-1

Timeline

  1. 13-09-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.25% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu125 products
  • linux< 5.4.0-200.220 | < 5.15.0-125.135 | < 6.8.0-50.51
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1135.145 | < 5.15.0-1072.78 | < 6.8.0-1020.22
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 312416d9171a1460b7ed8d182b5b540c910ce80d, < 0ee9594c974368a17e85a431e9fe1c14fb65c278 | ≥ 312416d9171a1460b7ed8d182b5b540c910ce80d, < f5a5a5a0e95f36e2792d48e6e4b64e665eb01374 | ≥ 312416d9171a1460b7ed8d182b5b540c910ce80d, < eaff392c1e34fb77cc61505a31b0191e5e46e271 | ≥ 312416d9171a1460b7ed8d182b5b540c910ce80d, < d9d48d70e922b272875cda60d2ada89291c840cf | ≥ 312416d9171a1460b7ed8d182b5b540c910ce80d, < ef80520be0ff78ae5ed44cb6eee1525e65bebe70 | ≥ 312416d9171a1460b7ed8d182b5b540c910ce80d, < 62c2d63605ca25b5db78a347ed303c0a0a77d5b4 | ≥ 312416d9171a1460b7ed8d182b5b540c910ce80d, < f9bb896eab221618927ae6a2f1d566567999839d | 4.18
  • linux_kernel≥ 4.18, < 5.4.283 | ≥ 5.5, < 5.10.225 | ≥ 5.11, < 5.15.166 | ≥ 5.16, < 6.1.108 | ≥ 6.2, < 6.6.49 | ≥ 6.7, < 6.10.8 | 6.11:rc1 | 6.11:rc2 | 6.11:rc3 | 6.11:rc4 | 6.11:rc5
Debian1 product
  • linux< 6.1.112-1 | < 6.10.9-1

3 vendors · 128 products

References

30 links
Show all 30 references