9.3

CVE-2024-36909: linux

CVSS: 9.3v3.1CriticalModified
AliasesUBUNTU-CVE-2024-36909DEBIAN-CVE-2024-36909
Published 30-05-2024Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2024-36909 is a critical (CVSS 9.3) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.24%
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 17 · Related 15
MGASA-2024-0263MGASA-2024-0266SUSE-SU-2024:2802-1SUSE-SU-2024:2894-1SUSE-SU-2024:2896-1SUSE-SU-2024:2939-1

Timeline

  1. 30-05-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Don't free ring buffers that couldn't be re-encrypted In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. The VMBus ring buffer code could free decrypted/shared pages if set_memory_decrypted() fails. Check the decrypted field in the struct vmbus_gpadl for the ring buffers to decide whether to free the memory.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.24%

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

Ubuntu100 products
  • linux< 6.8.0-40.40
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1013.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d4dccf353db80e209f262e3973c834e6e48ba9a9, < 2f622008bf784a9f5dd17baa19223cc2ac30a039 | ≥ d4dccf353db80e209f262e3973c834e6e48ba9a9, < 82f9e213b124a7d2bb5b16ea35d570260ef467e0 | ≥ d4dccf353db80e209f262e3973c834e6e48ba9a9, < a9212a4e2963a7fbe3864ba33dc551d4ad8d0abb | ≥ d4dccf353db80e209f262e3973c834e6e48ba9a9, < 30d18df6567be09c1433e81993e35e3da573ac48 | 5.16
  • linux_kernel< 6.1.91 | ≥ 6.2, < 6.6.31 | ≥ 6.7, < 6.8.10 | 6.9:rc1 | 6.9:rc2 | 6.9:rc3
Debian1 product
  • linux< 6.1.94-1 | < 6.8.11-1

3 vendors · 103 products

References

13 links
Show all 13 references