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CVE-2024-26611

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: xsk: fix usage of multi-buffer BPF helpers for ZC XDP Currently when packet is shrunk via bpf_xdp_adjust_tail() and memory type…

Published Mar 11, 2024CWE-476EPSS 0.65%

Overview

CVE-2024-26611 is a high-severity vulnerability. It was published on March 11, 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:

xsk: fix usage of multi-buffer BPF helpers for ZC XDP

Currently when packet is shrunk via bpf_xdp_adjust_tail() and memory

type is set to MEM_TYPE_XSK_BUFF_POOL, null ptr dereference happens:

[1136314.192256] BUG: kernel NULL pointer dereference, address:

0000000000000034

[1136314.203943] #PF: supervisor read access in kernel mode

[1136314.213768] #PF: error_code(0x0000) - not-present page

[1136314.223550] PGD 0 P4D 0

[1136314.230684] Oops: 0000 [#1] PREEMPT SMP NOPTI

[1136314.239621] CPU: 8 PID: 54203 Comm: xdpsock Not tainted 6.6.0+ #257

[1136314.250469] Hardware name: Intel Corporation S2600WFT/S2600WFT,

BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019

[1136314.265615] RIP: 0010:__xdp_return+0x6c/0x210

[1136314.274653] Code: ad 00 48 8b 47 08 49 89 f8 a8 01 0f 85 9b 01 00 00 0f 1f 44 00 00 f0 41 ff 48 34 75 32 4c 89 c7 e9 79 cd 80 ff 83 fe 03 75 17 <f6> 41 34 01 0f 85 02 01 00 00 48 89 cf e9 22 cc 1e 00 e9 3d

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/5cd781f7216f980207af09c5e0e1bb1eda284540Refgit.kernel.org/stable/c/82ee4781b8200e44669a354140d5c6bd966b8768Refgit.kernel.org/stable/c/c5114710c8ce86b8317e9b448f4fd15c711c2a82Refgit.kernel.org/stable/c/5cd781f7216f980207af09c5e0e1bb1eda284540Refgit.kernel.org/stable/c/82ee4781b8200e44669a354140d5c6bd966b8768Refgit.kernel.org/stable/c/c5114710c8ce86b8317e9b448f4fd15c711c2a82

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26611?

CVE-2024-26611 is a high-severity vulnerability. It was published on March 11, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-26611?

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-2024-26611?

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-2024-26611?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26611 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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