high
7.1
CWE
476 416
Advisory Published
CVE Published
Updated

CVE-2022-41858: Null Pointer Dereference

First published: Tue Apr 05 2022(Updated: )

A flaw was found in the Linux kernel. A NULL pointer dereference may occur while a slip driver is in progress to detach in sl_tx_timeout in drivers/net/slip/slip.c. This issue could allow an attacker to crash the system or leak internal kernel information.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<5.18
5.18
Linux Kernel<4.9.311
Linux Kernel>=4.10<4.14.276
Linux Kernel>=4.15<4.19.239
Linux Kernel>=4.20<5.4.190
Linux Kernel>=5.5.0<5.10.112
Linux Kernel>=5.11<5.15.35
Linux Kernel>=5.16<5.17.4
netapp hci baseboard management controller=h300s
netapp hci baseboard management controller=h410c
netapp hci baseboard management controller=h410s
netapp hci baseboard management controller=h500s
netapp hci baseboard management controller=h700s
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.13-1
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager<=ISVG 10.0.2

Remedy

This flaw can be mitigated by preventing the affected slip driver from loading during the boot time, and ensuring the module is added to the blacklist file. ~~~ Refer: How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~

Remedy

https://github.com/torvalds/linux/commit/ec4eb8a86ade4d22633e1da2a7d85a846b7d1798

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2022-41858?

    CVE-2022-41858 is classified as a high severity vulnerability due to its potential to crash the system or leak internal kernel information.

  • How do I fix CVE-2022-41858?

    To mitigate CVE-2022-41858, update your Linux kernel to version 5.19 or later, or apply the specific patches provided by your distribution.

  • Which versions of the Linux kernel are affected by CVE-2022-41858?

    CVE-2022-41858 affects Linux kernel versions prior to 5.19, specifically versions between 4.10 and 5.18.

  • Can CVE-2022-41858 be exploited remotely?

    Yes, an attacker may exploit CVE-2022-41858 remotely if the system has the affected slip driver enabled.

  • What is the impact of CVE-2022-41858 on affected systems?

    The impact of CVE-2022-41858 includes the potential for system crashes and unauthorized access to sensitive information within the kernel.

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