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CVE-2024-26738

5.5 · MEDIUM

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 kerne…

Published Apr 3, 2024CWE-476EPSS 0.24%

Overview

CVE-2024-26738 is a medium-severity vulnerability. 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, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25Refgit.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321Refgit.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765Refgit.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25Refgit.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321Refgit.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26738?

CVE-2024-26738 is a medium-severity vulnerability. 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?

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

How can CyberStrike help with CVE-2024-26738?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26738 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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