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CVE-2024-26868

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: nfs: fix panic when nfs4_ff_layout_prepare_ds() fails We've been seeing the following panic in production BUG: kernel NULL poi…

Published Apr 17, 2024CWE-476EPSS 0.61%

Overview

CVE-2024-26868 is a high-severity vulnerability. It was published on April 17, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

nfs: fix panic when nfs4_ff_layout_prepare_ds() fails

We've been seeing the following panic in production

BUG: kernel NULL pointer dereference, address: 0000000000000065

PGD 2f485f067 P4D 2f485f067 PUD 2cc5d8067 PMD 0

RIP: 0010:ff_layout_cancel_io+0x3a/0x90 [nfs_layout_flexfiles]

Call Trace:

<TASK>

? __die+0x78/0xc0

? page_fault_oops+0x286/0x380

? __rpc_execute+0x2c3/0x470 [sunrpc]

? rpc_new_task+0x42/0x1c0 [sunrpc]

? exc_page_fault+0x5d/0x110

? asm_exc_page_fault+0x22/0x30

? ff_layout_free_layoutreturn+0x110/0x110 [nfs_layout_flexfiles]

? ff_layout_cancel_io+0x3a/0x90 [nfs_layout_flexfiles]

? ff_layout_cancel_io+0x6f/0x90 [nfs_layout_flexfiles]

pnfs_mark_matching_lsegs_return+0x1b0/0x360 [nfsv4]

pnfs_error_mark_layout_for_return+0x9e/0x110 [nfsv4]

? ff_layout_send_layouterror+0x50/0x160 [nfs_layout_flexfiles]

nfs4_ff_layout_prepare_ds+0x11f/0x290 [nfs_layout_flexfiles]

ff_layout_pg_init_write+0xf0/0x

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/31db25e3141b20e2a76a9f219eeca52e3cab126cRefgit.kernel.org/stable/c/5ada9016b1217498fad876a3d5b07645cc955608Refgit.kernel.org/stable/c/719fcafe07c12646691bd62d7f8d94d657fa0766Refgit.kernel.org/stable/c/7ca651b4ec4a049f5a46a0e5ff921b86b91c47c5Refgit.kernel.org/stable/c/dac068f164ad05b35e7c0be13f138c3f6adca58fRefgit.kernel.org/stable/c/31db25e3141b20e2a76a9f219eeca52e3cab126cRefgit.kernel.org/stable/c/5ada9016b1217498fad876a3d5b07645cc955608Refgit.kernel.org/stable/c/719fcafe07c12646691bd62d7f8d94d657fa0766Refgit.kernel.org/stable/c/7ca651b4ec4a049f5a46a0e5ff921b86b91c47c5Refgit.kernel.org/stable/c/dac068f164ad05b35e7c0be13f138c3f6adca58f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26868?

CVE-2024-26868 is a high-severity vulnerability. It was published on April 17, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-26868?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-26868?

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-2024-26868?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26868 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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