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CVE-2024-26906

5.5 · MEDIUM
Published Apr 17, 2024 linux EPSS 0.25% (17th pctl)

Overview

CVE-2024-26906 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 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:

x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()

When trying to use copy_from_kernel_nofault() to read vsyscall page

through a bpf program, the following oops was reported:

BUG: unable to handle page fault for address: ffffffffff600000

#PF: supervisor read access in kernel mode

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

PGD 3231067 P4D 3231067 PUD 3233067 PMD 3235067 PTE 0

Oops: 0000 [#1] PREEMPT SMP PTI

CPU: 1 PID: 20390 Comm: test_progs ...... 6.7.0+ #58

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ......

RIP: 0010:copy_from_kernel_nofault+0x6f/0x110

......

Call Trace:

<TASK>

? copy_from_kernel_nofault+0x6f/0x110

bpf_probe_read_kernel+0x1d/0x50

bpf_prog_2061065e56845f08_do_probe_read+0x51/0x8d

trace_call_bpf+0xc5/0x1c0

perf_call_bpf_enter.isra.0+0x69/0xb0

perf_syscall_enter+0x13e/0x200

syscall_trace_enter+0x188/0x1c0

do_syscall_64+0xb5/0xe0

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 >= 0, < 5.10.214 Affected

References

Ref git.kernel.org/stable/c/29bd6f86904682adafe9affbc7f79b14defcaff8 Ref git.kernel.org/stable/c/32019c659ecfe1d92e3bf9fcdfbb11a7c70acd58 Ref git.kernel.org/stable/c/57f78c46f08198e1be08ffe99c4c1ccc12855bf5 Ref git.kernel.org/stable/c/6e4694e65b6db4c3de125115dd4f55848cc48381 Ref git.kernel.org/stable/c/e8a67fe34b76a49320b33032228a794f40b0316b Ref git.kernel.org/stable/c/f175de546a3eb77614d94d4c02550181c0a8493e Ref git.kernel.org/stable/c/29bd6f86904682adafe9affbc7f79b14defcaff8 Ref git.kernel.org/stable/c/32019c659ecfe1d92e3bf9fcdfbb11a7c70acd58 Ref git.kernel.org/stable/c/57f78c46f08198e1be08ffe99c4c1ccc12855bf5 Ref git.kernel.org/stable/c/6e4694e65b6db4c3de125115dd4f55848cc48381

Frequently Asked Questions

What is CVE-2024-26906?

CVE-2024-26906 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26906?

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-2024-26906?

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.

How can CyberStrike help with CVE-2024-26906?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26906 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

Autonomous Discovery

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HackBrowser

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