5.5

CVE-2024-56767: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-56767DEBIAN-CVE-2024-56767
Published 06-01-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2024-56767 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.4% 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
0.22%
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 56 · Related 53
DLA-4075-1DLA-4076-1MGASA-2025-0030MGASA-2025-0032SUSE-SU-2025:0289-1SUSE-SU-2025:0428-1

Timeline

  1. 06-01-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset The at_xdmac_memset_create_desc may return NULL, which will lead to a null pointer dereference. For example, the len input is error, or the atchan->free_descs_list is empty and memory is exhausted. Therefore, add check to avoid this.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.22%

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

Ubuntu135 products
  • linux< 4.4.0-274.308 | < 4.15.0-243.255 | < 5.4.0-211.231 | < 5.15.0-135.146 | < 6.8.0-60.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1149.155 | < 4.4.0-1187.202 | < 4.15.0-1186.199 | < 5.4.0-1142.152 | < 5.15.0-1080.87 | < 6.8.0-1029.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ b206d9a23ac71cb905f5fb6e0cd813406f89b678, < 3d229600c54e9e0909080ecaf1aab0642aefa5f0 | ≥ b206d9a23ac71cb905f5fb6e0cd813406f89b678, < ed1a8aaa344522c0c349ac9042db27ad130ef913 | ≥ b206d9a23ac71cb905f5fb6e0cd813406f89b678, < 8d364597de9ce2a5f52714224bfe6c2e7a29b303 | ≥ b206d9a23ac71cb905f5fb6e0cd813406f89b678, < fdba6d5e455388377ec7e82a5913ddfcc7edd93b | ≥ b206d9a23ac71cb905f5fb6e0cd813406f89b678, < e658f1c133b854b2ae799147301d82dddb8f3162 | ≥ b206d9a23ac71cb905f5fb6e0cd813406f89b678, < 54376d8d26596f98ed7432a788314bb9154bf3e3 | ≥ b206d9a23ac71cb905f5fb6e0cd813406f89b678, < c43ec96e8d34399bd9dab2f2dc316b904892133f | 4.2
  • linux_kernel≥ 4.2, < 6.1.123 | ≥ 6.2, < 6.6.69 | ≥ 6.7, < 6.12.8 | 6.13:rc1 | 6.13:rc2 | 6.13:rc3 | 6.13:rc4
Debian1 product
  • linux< 6.1.123-1 | < 6.12.8-1

3 vendors · 138 products

References

59 links
Show all 59 references