medium CVSS 6.5 EPSS <0.1%

CVE-2024-50076·Kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: vt: prevent kernel-infoleak in con_font_get() font.data may not initialize all memory spaces depending on the implementation of vc->vc_sw->con_font_get. This may cause info-leak, so to prevent this, it is safest to modify it to initialize the allocated memory space to 0, and it generally does not affect the overall performance of the system.

Severity
medium
Software
Kernel
Fixed in
6.11.5
Published

How likely is exploitation

FIRST's Exploit Prediction Scoring System puts the probability of this CVE being exploited in the next 30 days at <0.1% — higher than 22% of all published CVEs. EPSS is an independent forecast of exploitation, not a severity rating: it says nothing about how much damage a successful attack does, which is what a CVSS score measures.

Affected versions

From: 6.7

Until: 6.11.5

Fixed in: 6.11.5

How to fix this CVE

Update your Linux kernel to version 6.11.5 or later to address a kernel memory disclosure vulnerability in the virtual terminal font handling code. This vulnerability could allow a local authenticated attacker to read uninitialized kernel memory. Apply the update immediately through your distribution's package manager.

sudo dnf update kernel kernel-devel

Defensia detects this vulnerability

How to check if you are affected

  1. Check installed kernel version: uname -r (verify it is 6.11.5 or later, or earlier than 6.7)
  2. Verify vulnerability status: if kernel version is between 6.7 and 6.11.4, the system is vulnerable
  3. Review auth logs for local user login attempts: grep 'sshd\|sudo' /var/log/auth.log | tail -100 (check for suspicious authentication patterns)
  4. Confirm patch application by checking kernel release notes: cat /proc/version and cross-reference with upstream changelog at kernel.org

FAQ

What is CVE-2024-50076?

CVE-2024-50076 is a kernel information disclosure vulnerability in the virtual terminal font subsystem where uninitialized memory regions could be exposed to authenticated local users through the con_font_get() function.

Is CVE-2024-50076 being actively exploited?

No, CVE-2024-50076 is not listed in the CISA Known Exploited Vulnerabilities catalog and no public exploits are currently available.

What versions of Kernel are affected by CVE-2024-50076?

Linux kernel versions 6.7 through 6.11.4 are vulnerable; kernel 6.11.5 and later contain the fix.

How do I check if my server is vulnerable to CVE-2024-50076?

Run 'uname -r' and compare the output against the vulnerable range 6.7-6.11.4; if your version falls within this range, immediate patching is required.

Does Defensia detect CVE-2024-50076?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If the Linux kernel is installed on a monitored server, CVE-2024-50076 will appear in your dashboard with remediation steps.

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References

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