5.5

CVE-2024-44948: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-44948DEBIAN-CVE-2024-44948
Published 04-09-2024Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2024-44948 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.4% 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
0.24%
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 32 · Related 28
DLA-3912-1DLA-4008-1MGASA-2024-0309MGASA-2024-0310SUSE-SU-2024:3551-1SUSE-SU-2024:3553-1

Timeline

  1. 04-09-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: x86/mtrr: Check if fixed MTRRs exist before saving them MTRRs have an obsolete fixed variant for fine grained caching control of the 640K-1MB region that uses separate MSRs. This fixed variant has a separate capability bit in the MTRR capability MSR. So far all x86 CPUs which support MTRR have this separate bit set, so it went unnoticed that mtrr_save_state() does not check the capability bit before accessing the fixed MTRR MSRs. Though on a CPU that does not support the fixed MTRR capability this results in a #GP. The #GP itself is harmless because the RDMSR fault is handled gracefully, but results in a WARN_ON(). Add the missing capability check to prevent this.

CVSS metrics

3 scores · 3 sources · 1 version

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

No weakness data has been published for this record.

Affected systems

Ubuntu129 products
  • linuxAll versions (No fix recorded) | < 5.4.0-200.220 | < 5.15.0-125.135 | < 6.8.0-50.51
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < 34f36e6ee5bd7eff8b2adcd9fcaef369f752d82e | ≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < 06c1de44d378ec5439db17bf476507d68589bfe9 | ≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < 450b6b22acdaac67a18eaf5ed498421ffcf10051 | ≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < ca7d00c5656d1791e28369919e3e10febe9c3b16 | ≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < 8aa79dfb216b865e96ff890bc4ea71650f9bc8d7 | ≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < 8a90d3fc7c24608548d3a750671f9dac21d1a462 | ≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < 388f1c954019f253a8383f7eb733f38d541e10b6 | ≥ 2b1f6278d77c1f2f669346fc2bb48012b5e9495a, < 919f18f961c03d6694aa726c514184f2311a4614 | 2.6.22
  • linux_kernel≥ 2.6.22, < 4.19.320 | ≥ 4.20, < 5.4.282 | ≥ 5.5, < 5.10.224 | ≥ 5.11, < 5.15.165 | ≥ 5.16, < 6.1.105 | ≥ 6.2, < 6.6.46 | ≥ 6.7, < 6.10.5 | 6.11:rc1 | 6.11:rc2
Debian1 product
  • linux< 6.1.106-1 | < 6.10.6-1

3 vendors · 132 products

References

31 links
Show all 31 references