CVE-2024-53217: NFSD: Prevent NULL dereference in nfsd4_process_cb_update()
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Prevent NULL dereference in nfsd4processcbupdate()
@ses is initialized to NULL. If nfsd4findbackchannel() finds no available backchannel session, setupcallbackclient() will try to dereference @ses and segfault.
Other sources
This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.
— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.129-1~deb11u1 - Compensating control
Apply an upstream Linux kernel fix for NFSD: Prevent NULL dereference in nfsd4_process_cb_update() to avoid NULL dereference/segfault when no backchannel session is available.
Event History
Frequently Asked Questions
What is the severity of CVE-2024-53217?
The severity of CVE-2024-53217 is considered moderate due to the potential for a NULL dereference in the Linux kernel.
How do I fix CVE-2024-53217?
To fix CVE-2024-53217, update your Linux kernel to a patched version that addresses this vulnerability.
Which versions of the Linux kernel are affected by CVE-2024-53217?
CVE-2024-53217 affects Linux kernel versions between 2.6.38 and 6.12.2.
What components are impacted by CVE-2024-53217?
CVE-2024-53217 specifically impacts the NFSD and its handling of backchannel sessions.
Is there a workaround for CVE-2024-53217?
No official workaround is available for CVE-2024-53217; the recommended approach is to upgrade to the latest kernel version.