PT-2024-7287 · Linux+1 · Linux Kernel+1

Brian King + 1 · Published 2024-02-19 · Updated 2025-01-07 · CVE-2024-26738

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.7.0-203405+

Description: The issue is related to the powerpc/pseries/iommu component of the Linux kernel. When a PCI device is dynamically added, the kernel experiences a NULL pointer dereference, leading to a crash. This occurs because the iommu device structure is not properly initialized during the DLPAR add process. The fix involves registering the iommu device during DLPAR add.

Recommendations: To resolve this issue, update the Linux kernel to a version that includes the fix for the powerpc/pseries/iommu component. Specifically, ensure that the kernel version is 6.7.0-203405+ or later. As a temporary workaround, consider disabling the dynamic addition of PCI devices until the kernel can be updated.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2024-08641

CVE-2024-26738

Affected Products

Linux Kernel

Red Os

References · 24

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26738.json · Exploit
• https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765 · Patch
• https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2024-26738 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-26738 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-26738 · Vendor Advisory
• https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25 · Patch
• https://ubuntu.com/security/CVE-2024-26738 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-26738 · Security Note
• https://bdu.fstec.ru/vul/2024-08641 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-26738 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2024-26738 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-26738 · Vendor Advisory
• https://redos.red-soft.ru/support/secure · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.19 · Note