5.5

CVE-2024-49858: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-49858DEBIAN-CVE-2024-49858
Published 21-10-2024Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2024-49858 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.9% 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
0.21%
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 39 · Related 37
DLA-4008-1DLA-4075-1MGASA-2024-0344MGASA-2024-0345OPENSUSE-SU-2024:14500-1OPENSUSE-SU-2025:14705-1

Timeline

  1. 21-10-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: efistub/tpm: Use ACPI reclaim memory for event log to avoid corruption The TPM event log table is a Linux specific construct, where the data produced by the GetEventLog() boot service is cached in memory, and passed on to the OS using an EFI configuration table. The use of EFI_LOADER_DATA here results in the region being left unreserved in the E820 memory map constructed by the EFI stub, and this is the memory description that is passed on to the incoming kernel by kexec, which is therefore unaware that the region should be reserved. Even though the utility of the TPM2 event log after a kexec is questionable, any corruption might send the parsing code off into the weeds and crash the kernel. So let's use EFI_ACPI_RECLAIM_MEMORY instead, which is always treated as reserved by the E820 conversion logic.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.21%

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

Ubuntu135 products
  • linuxAll versions (No fix recorded) | < 5.15.0-127.137 | < 6.8.0-54.56
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1073.79 | < 6.8.0-1023.25
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 33b6d03469b2206fb51ecc37f40411a857ad8fff, < f76b69ab9cf04358266e3cea5748c0c2791fbb08 | ≥ 33b6d03469b2206fb51ecc37f40411a857ad8fff, < 11690d7e76842f29b60fbb5b35bc97d206ea0e83 | ≥ 33b6d03469b2206fb51ecc37f40411a857ad8fff, < 5b22c038fb2757c652642933de5664da471f8cb7 | ≥ 33b6d03469b2206fb51ecc37f40411a857ad8fff, < 19fd2f2c5fb36b61506d3208474bfd8fdf1cada3 | ≥ 33b6d03469b2206fb51ecc37f40411a857ad8fff, < 38d9b07d99b789efb6d8dda21f1aaad636c38993 | ≥ 33b6d03469b2206fb51ecc37f40411a857ad8fff, < 2e6871a632a99d9b9e2ce3a7847acabe99e5a26e | ≥ 33b6d03469b2206fb51ecc37f40411a857ad8fff, < 77d48d39e99170b528e4f2e9fc5d1d64cdedd386 | 4.16
  • linux_kernel< 5.10.227 | ≥ 5.11, < 5.15.168 | ≥ 5.16, < 6.1.113 | ≥ 6.2, < 6.6.54 | ≥ 6.7, < 6.10.13 | ≥ 6.11, < 6.11.2
Debian1 product
  • linux< 6.1.115-1 | < 6.11.2-1

3 vendors · 138 products

References

36 links
Show all 36 references