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CVE-2024-26675

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ppp_async: limit MRU to 64K syzbot triggered a warning [1] in __alloc_pages(): WARN_ON_ONCE_GFP(order > MAX_PAGE_ORDER, gfp)…

Published Apr 2, 2024CWE-770EPSS 0.25%

Overview

CVE-2024-26675 is a medium-severity vulnerability. It was published on April 2, 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:

ppp_async: limit MRU to 64K

syzbot triggered a warning [1] in __alloc_pages():

WARN_ON_ONCE_GFP(order > MAX_PAGE_ORDER, gfp)

Willem fixed a similar issue in commit c0a2a1b0d631 ("ppp: limit MRU to 64K")

Adopt the same sanity check for ppp_async_ioctl(PPPIOCSMRU)

[1]:

WARNING: CPU: 1 PID: 11 at mm/page_alloc.c:4543 __alloc_pages+0x308/0x698 mm/page_alloc.c:4543

Modules linked in:

CPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc2-syzkaller-g41bccc98fb79 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023

Workqueue: events_unbound flush_to_ldisc

pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4543

lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4537

sp : ffff800093967580

x29: ffff800093967660 x28: ffff8000939675a0 x27: dfff800000000000

x26: ffff70001272ceb4 x25: 0000000000000000 x24: ffff8000939675c0

x23:

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/210d938f963dddc543b07e66a79b7d8d4bd00bd8Refgit.kernel.org/stable/c/4e2c4846b2507f6dfc9bea72b7567c2693a82a16Refgit.kernel.org/stable/c/4fdb14ba89faff6e6969a4dffdc8e54235d6e5edRefgit.kernel.org/stable/c/56fae81633ccee307cfcb032f706bf1863a56982Refgit.kernel.org/stable/c/58fbe665b097bf7b3144da7e7b91fb27aa8d0ae3Refgit.kernel.org/stable/c/7e5ef49670766c9742ffcd9cead7cdb018268719Refgit.kernel.org/stable/c/b06e067e93fa4b98acfd3a9f38a398ab91bbc58bRefgit.kernel.org/stable/c/cb88cb53badb8aeb3955ad6ce80b07b598e310b8Refgit.kernel.org/stable/c/210d938f963dddc543b07e66a79b7d8d4bd00bd8Refgit.kernel.org/stable/c/4e2c4846b2507f6dfc9bea72b7567c2693a82a16

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26675?

CVE-2024-26675 is a medium-severity vulnerability. It was published on April 2, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26675?

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-2024-26675?

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-2024-26675?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26675 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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