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CVE-2022-48937

3.3 · LOW

In the Linux kernel, the following vulnerability has been resolved: io_uring: add a schedule point in io_add_buffers() Looping ~65535 times doing kmalloc() calls can trigger soft lockups, especia…

Published Aug 22, 2024CWE-667EPSS 0.16%

Overview

CVE-2022-48937 is a low-severity vulnerability. It was published on August 22, 2024 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. 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:

io_uring: add a schedule point in io_add_buffers()

Looping ~65535 times doing kmalloc() calls can trigger soft lockups,

especially with DEBUG features (like KASAN).

[ 253.536212] watchdog: BUG: soft lockup - CPU#64 stuck for 26s! [b219417889:12575]

[ 253.544433] Modules linked in: vfat fat i2c_mux_pca954x i2c_mux spidev cdc_acm xhci_pci xhci_hcd sha3_generic gq(O)

[ 253.544451] CPU: 64 PID: 12575 Comm: b219417889 Tainted: G S O 5.17.0-smp-DEV #801

[ 253.544457] RIP: 0010:kernel_text_address (./include/asm-generic/sections.h:192 ./include/linux/kallsyms.h:29 kernel/extable.c:67 kernel/extable.c:98)

[ 253.544464] Code: 0f 93 c0 48 c7 c1 e0 63 d7 a4 48 39 cb 0f 92 c1 20 c1 0f b6 c1 5b 5d c3 90 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 53 48 89 fb <48> c7 c0 00 00 80 a0 41 be 01 00 00 00 48 39 c7 72 0c 48 c7 c0 40

[ 253.544468] RSP: 0018:ffff8882d8baf4c0 EFLAGS: 00000246

[ 253.544471] RAX: 1ffff1105b175

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/4a93c6594613c3429b6f30136fff115c7f803af4Refgit.kernel.org/stable/c/8f3cc3c5bc43d03b5748ac4fb8d180084952c36aRefgit.kernel.org/stable/c/c718ea4e7382e18957ed0e88a5f855e2122d9c00Refgit.kernel.org/stable/c/f240762f88b4b1b58561939ffd44837759756477

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48937?

CVE-2022-48937 is a low-severity vulnerability. It was published on August 22, 2024 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2022-48937?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-48937?

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-2022-48937?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48937 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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