What’s Vulnerable › Vulnerabilities

CVE-2023-3212

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-23 · updated 2026-10-14
• Weakness: CWE-476

Description

A NULL pointer dereference issue was found in the gfs2 file system in the Linux kernel. It occurs on corrupt gfs2 file systems when the evict code tries to reference the journal descriptor structure after it has been freed and set to NULL. A privileged local user could use this flaw to cause a kernel panic.

Affected products

• Debian Linux: 10.0, 11.0, 12.0
• Fedoraproject Fedora: 38
• Linux kernel: before 6.4; 6.4-rc1 — fixed in 6.4
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700S Firmware: all versions
• Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: Linux kernel 6.4. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2214348
• https://github.com/torvalds/linux/commit/504a10d9e46bc37b23d0a1ae2f28973c8516e636
• https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
• https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
• https://security.netapp.com/advisory/ntap-20230929-0005/
• https://www.debian.org/security/2023/dsa-5448
• https://www.debian.org/security/2023/dsa-5480
• https://bugzilla.redhat.com/show_bug.cgi?id=2214348
• https://github.com/torvalds/linux/commit/504a10d9e46bc37b23d0a1ae2f28973c8516e636
• https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
• https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
• https://security.netapp.com/advisory/ntap-20230929-0005/

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