CVE-2024-26738

5.5 · MEDIUM

Published Apr 3, 2024 linux CWE-476 EPSS 0.24% (15th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-26738 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 3, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller

When a PCI device is dynamically added, the kernel oopses with a NULL

pointer dereference:

BUG: Kernel NULL pointer dereference on read at 0x00000030

Faulting instruction address: 0xc0000000006bbe5c

Oops: Kernel access of bad area, sig: 11 [#1]

LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries

Modules linked in: rpadlpar_io rpaphp rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache netfs xsk_diag bonding nft_compat nf_tables nfnetlink rfkill binfmt_misc dm_multipath rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_umad ib_iser libiscsi scsi_transport_iscsi ib_ipoib rdma_cm iw_cm ib_cm mlx5_ib ib_uverbs ib_core pseries_rng drm drm_panel_orientation_quirks xfs libcrc32c mlx5_core mlxfw sd_mod t10_pi sg tls ibmvscsi ibmveth scsi_transport_srp vmx_crypto pseries_wdt psample dm_mir

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
linux	linux_kernel	>= 6.4, < 6.6.19	Affected

References

Ref git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25 Ref git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321 Ref git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765 Ref git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25 Ref git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321 Ref git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765

Frequently Asked Questions

What is CVE-2024-26738?

CVE-2024-26738 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 3, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26738?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26738?

How can CyberStrike help with CVE-2024-26738?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26738 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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HackBrowser

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