CVE-2024-40984

MEDIUM EPSS 20.3%
Published Jul 12, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jul 12, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
20.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥2.6.32  –  <4.19.317
linuxlinux_kernel*≥4.20  –  <5.4.279
linuxlinux_kernel*≥5.5  –  <5.10.221
linuxlinux_kernel*≥5.11  –  <5.15.162
linuxlinux_kernel*≥5.16  –  <6.1.96
linuxlinux_kernel*≥6.2  –  <6.6.36
linuxlinux_kernel*≥6.7  –  <6.9.7
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any

References 12

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-355557.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-613116.html
  • git.kernel.org https://git.kernel.org/stable/c/434c6b924e1f4c219aab2d9e05fe79c5364e37d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/435ecc978c3d5d0c4e172ec5b956dc1904061d98
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6eca23100e9030725f69c1babacd58803f29ec8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a83e1385b780d41307433ddbc86e3c528db031f0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ae465109d82f4fb03c5adbe85f2d6a6a3d59124c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc5017c57f5eee80020c73ff8b67ba7f9fd08b1f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ddc1f5f124479360a1fd43f73be950781d172239
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e21a4c9129c72fa54dd00f5ebf71219b41d43c04
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/434c6b924e1f4c219aab2d9e05fe79c5364e37d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/435ecc978c3d5d0c4e172ec5b956dc1904061d98
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6eca23100e9030725f69c1babacd58803f29ec8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a83e1385b780d41307433ddbc86e3c528db031f0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ae465109d82f4fb03c5adbe85f2d6a6a3d59124c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc5017c57f5eee80020c73ff8b67ba7f9fd08b1f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ddc1f5f124479360a1fd43f73be950781d172239
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e21a4c9129c72fa54dd00f5ebf71219b41d43c04
    Patch