Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2022-48954

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: s390/qeth: fix use-after-free in hsci KASAN found that addr was dereferenced after br2dev_event_work was freed.

Published Oct 21, 2024CWE-416EPSS 0.33%

Overview

CVE-2022-48954 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

s390/qeth: fix use-after-free in hsci

KASAN found that addr was dereferenced after br2dev_event_work was freed.

==================================================================

BUG: KASAN: use-after-free in qeth_l2_br2dev_worker+0x5ba/0x6b0

Read of size 1 at addr 00000000fdcea440 by task kworker/u760:4/540

CPU: 17 PID: 540 Comm: kworker/u760:4 Tainted: G E 6.1.0-20221128.rc7.git1.5aa3bed4ce83.300.fc36.s390x+kasan #1

Hardware name: IBM 8561 T01 703 (LPAR)

Workqueue: 0.0.8000_event qeth_l2_br2dev_worker

Call Trace:

[<000000016944d4ce>] dump_stack_lvl+0xc6/0xf8

[<000000016942cd9c>] print_address_description.constprop.0+0x34/0x2a0

[<000000016942d118>] print_report+0x110/0x1f8

[<0000000167a7bd04>] kasan_report+0xfc/0x128

[<000000016938d79a>] qeth_l2_br2dev_worker+0x5ba/0x6b0

[<00000001673edd1e>] process_one_work+0x76e/0x1128

[<00000001673ee85c>] worker_thread+0x184/0x1098

[<000000016740718a>] kt

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/bde0dfc7c4569406a6ddeec363d04a1df7b3073fRefgit.kernel.org/stable/c/db6343a5b0d9661f2dd76f653c6d274d38234d2bRefgit.kernel.org/stable/c/ebaaadc332cd21e9df4dcf9ce12552d9354bbbe4

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48954?

CVE-2022-48954 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2022-48954?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-48954?

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-2022-48954?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48954 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.

Related HIGH CVEs from 2022

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999