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CVE-2024-26745

4.4 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV When kdump kernel tries to copy dump data over SR-I…

Published Apr 4, 2024CWE-476EPSS 0.22%

Overview

CVE-2024-26745 is a medium-severity vulnerability. It was published on April 4, 2024 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.4, 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: IOMMU table is not initialized for kdump over SR-IOV

When kdump kernel tries to copy dump data over SR-IOV, LPAR panics due

to NULL pointer exception:

Kernel attempted to read user page (0) - exploit attempt? (uid: 0)

BUG: Kernel NULL pointer dereference on read at 0x00000000

Faulting instruction address: 0xc000000020847ad4

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

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

Modules linked in: mlx5_core(+) vmx_crypto pseries_wdt papr_scm libnvdimm mlxfw tls psample sunrpc fuse overlay squashfs loop

CPU: 12 PID: 315 Comm: systemd-udevd Not tainted 6.4.0-Test102+ #12

Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries

NIP: c000000020847ad4 LR: c00000002083b2dc CTR: 00000000006cd18c

REGS: c000000029162ca0 TRAP: 0300 Not tainted (6.4.0-Test102+)

MSR: 800000000280b033

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/09a3c1e46142199adcee372a420b024b4fc61051Refgit.kernel.org/stable/c/5da6d306f315344af1ca2eff4bd9b10b130f0c28Refgit.kernel.org/stable/c/7eb95e0af5c9c2e6fad50356eaf32d216d0e7bc3Refgit.kernel.org/stable/c/d4d1e4b1513d975961de7bb4f75e450a92d65ebfRefgit.kernel.org/stable/c/09a3c1e46142199adcee372a420b024b4fc61051Refgit.kernel.org/stable/c/5da6d306f315344af1ca2eff4bd9b10b130f0c28Refgit.kernel.org/stable/c/7eb95e0af5c9c2e6fad50356eaf32d216d0e7bc3Refgit.kernel.org/stable/c/d4d1e4b1513d975961de7bb4f75e450a92d65ebf

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26745?

CVE-2024-26745 is a medium-severity vulnerability. It was published on April 4, 2024 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2024-26745?

This vulnerability has a CVSS 3.1 base score of 4.4, 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-2024-26745?

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-2024-26745?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26745 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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