Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2022-49928

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed There is a null-ptr-deref when xps sysfs alloc failed: BUG: KASAN: nul…

Published May 1, 2025CWE-476EPSS 0.36%

Overview

CVE-2022-49928 is a high-severity vulnerability. It was published on May 1, 2025 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:

SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed

There is a null-ptr-deref when xps sysfs alloc failed:

BUG: KASAN: null-ptr-deref in sysfs_do_create_link_sd+0x40/0xd0

Read of size 8 at addr 0000000000000030 by task gssproxy/457

CPU: 5 PID: 457 Comm: gssproxy Not tainted 6.0.0-09040-g02357b27ee03 #9

Call Trace:

<TASK>

dump_stack_lvl+0x34/0x44

kasan_report+0xa3/0x120

sysfs_do_create_link_sd+0x40/0xd0

rpc_sysfs_client_setup+0x161/0x1b0

rpc_new_client+0x3fc/0x6e0

rpc_create_xprt+0x71/0x220

rpc_create+0x1d4/0x350

gssp_rpc_create+0xc3/0x160

set_gssp_clnt+0xbc/0x140

write_gssp+0x116/0x1a0

proc_reg_write+0xd6/0x130

vfs_write+0x177/0x690

ksys_write+0xb9/0x150

do_syscall_64+0x35/0x80

entry_SYSCALL_64_after_hwframe+0x46/0xb0

When the xprt_switch sysfs alloc failed, should not add xprt and

switch sysfs to it, otherwise, maybe null-ptr-deref; also initialize

the 'xp

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/7b189b0aa8dab14b49c31c65af8a982e96e25b62Refgit.kernel.org/stable/c/cbdeaee94a415800c65a8c3fa04d9664a8b8fb3aRefgit.kernel.org/stable/c/d59722d088a9d86ce6d9d39979e5d1d669d249f7

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49928?

CVE-2022-49928 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2022-49928?

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-2022-49928?

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-2022-49928?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49928 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