7.8

CVE-2024-56662: linux Out-of-bounds Read

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2024-56662DEBIAN-CVE-2024-56662
Published 27-12-2024Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2024-56662 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.2% 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
0.61%
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 45 · Related 41
DLA-4075-1DLA-4076-1MGASA-2025-0030MGASA-2025-0032RHSA-2025:20095RHSA-2025:20518

Timeline

  1. 27-12-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl Fix an issue detected by syzbot with KASAN: BUG: KASAN: vmalloc-out-of-bounds in cmd_to_func drivers/acpi/nfit/ core.c:416 [inline] BUG: KASAN: vmalloc-out-of-bounds in acpi_nfit_ctl+0x20e8/0x24a0 drivers/acpi/nfit/core.c:459 The issue occurs in cmd_to_func when the call_pkg->nd_reserved2 array is accessed without verifying that call_pkg points to a buffer that is appropriately sized as a struct nd_cmd_pkg. This can lead to out-of-bounds access and undefined behavior if the buffer does not have sufficient space. To address this, a check was added in acpi_nfit_ctl() to ensure that buf is not NULL and that buf_len is less than sizeof(*call_pkg) before accessing it. This ensures safe access to the members of call_pkg, including the nd_reserved2 array.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.61%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

0.00 pp

From 0.61% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.61%

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

Ubuntu134 products
  • linux< 4.15.0-239.251 | < 5.4.0-219.239 | < 5.15.0-135.146 | < 6.8.0-60.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1182.195 | < 5.4.0-1148.158 | < 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≥ ebe9f6f19d80d8978d16078dff3d5bd93ad8d102, < 616aa5f3c86e0479bcbb81e41c08c43ff32af637 | ≥ ebe9f6f19d80d8978d16078dff3d5bd93ad8d102, < bbdb3307f609ec4dc9558770f464ede01fe52aed | ≥ ebe9f6f19d80d8978d16078dff3d5bd93ad8d102, < 143f723e9eb4f0302ffb7adfdc7ef77eab3f68e0 | ≥ ebe9f6f19d80d8978d16078dff3d5bd93ad8d102, < e08dc2dc3c3f7938df0e4476fe3e6fdec5583c1d | ≥ ebe9f6f19d80d8978d16078dff3d5bd93ad8d102, < 212846fafb753a48e869e2a342fc1e24048da771 | ≥ ebe9f6f19d80d8978d16078dff3d5bd93ad8d102, < 265e98f72bac6c41a4492d3e30a8e5fd22fe0779 | 63108f2a408abea7ecab063efa0f398da4d0d14b | f5878c4f084dc6b1386dad03970bb61ad5e9dc4b | 0c79794474895dbbc3c52225f7e9f73cfecbb7dd | ≥ 4.14.176, < 4.15 | ≥ 4.19.31, < 4.20 | ≥ 5.0.4, < 5.1 | 5.1
  • linux_kernel≥ 4.14.176, < 4.15 | ≥ 4.19.31, < 4.20 | ≥ 5.0.4, < 5.10.232 | ≥ 5.11, < 5.15.175 | ≥ 5.16, < 6.1.121 | ≥ 6.2, < 6.6.67 | ≥ 6.7, < 6.12.6 | 6.13:rc1 | 6.13:rc2
Debian1 product
  • linux< 6.1.123-1 | < 6.12.6-1

3 vendors · 137 products

References

45 links
Show all 45 references