7.8

CVE-2024-43856: linux

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2024-43856DEBIAN-CVE-2024-43856
Published 17-08-2024Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2024-43856 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.4% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.42%
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 36 · Related 31
DLA-3912-1DLA-4008-1MGASA-2024-0309MGASA-2024-0310RHSA-2024:9315SUSE-SU-2024:3189-1

Timeline

  1. 17-08-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: dma: fix call order in dmam_free_coherent dmam_free_coherent() frees a DMA allocation, which makes the freed vaddr available for reuse, then calls devres_destroy() to remove and free the data structure used to track the DMA allocation. Between the two calls, it is possible for a concurrent task to make an allocation with the same vaddr and add it to the devres list. If this happens, there will be two entries in the devres list with the same vaddr and devres_destroy() can free the wrong entry, triggering the WARN_ON() in dmam_match. Fix by destroying the devres entry before freeing the DMA allocation. kokonut //net/encryption http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

0.00 pp

From 0.42% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.42%

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

Ubuntu129 products
  • linuxAll versions (No fix recorded) | < 4.4.0-262.296 | < 4.15.0-232.244 | < 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< 4.4.0-1139.145 | < 4.4.0-1177.192 | < 4.15.0-1176.189 | < 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≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < fe2d246080f035e0af5793cb79067ba125e4fb63 | ≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < 2f7bbdc744f2e7051d1cb47c8e082162df1923c9 | ≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < 257193083e8f43907e99ea633820fc2b3bcd24c7 | ≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < 87b34c8c94e29fa01d744e5147697f592998d954 | ≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < f993a4baf6b622232e4c190d34c220179e5d61eb | ≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < 1fe97f68fce1ba24bf823bfb0eb0956003473130 | ≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < 22094f5f52e7bc16c5bf9613365049383650b02e | ≥ 9ac7849e35f705830f7b016ff272b0ff1f7ff759, < 28e8b7406d3a1f5329a03aa25a43aa28e087cb20 | 2.6.21
  • linux_kernel≥ 2.6.21, < 4.19.320 | ≥ 4.20, < 5.4.282 | ≥ 5.5, < 5.10.224 | ≥ 5.11, < 5.15.165 | ≥ 5.16, < 6.1.103 | ≥ 6.2, < 6.6.44 | ≥ 6.7, < 6.10.3
Debian1 product
  • linux< 6.1.106-1 | < 6.10.3-1

3 vendors · 132 products

References

36 links
Show all 36 references