high CVSS 7.8 EPSS <0.1%

CVE-2024-49865·Kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: drm/xe/vm: move xa_alloc to prevent UAF Evil user can guess the next id of the vm before the ioctl completes and then call vm destroy ioctl to trigger UAF since create ioctl is still referencing the same vm. Move the xa_alloc all the way to the end to prevent this. v2: - Rebase (cherry picked from commit dcfd3971327f3ee92765154baebbaece833d3ca9)

Severity
high
Software
Kernel
Fixed in
6.11.3
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 8% 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.

Read the two together. CVE-2024-49865 scores 7.8 on CVSS, so a successful attack would be serious — but at <0.1%, almost nobody is currently attempting it. That is a different situation from a flaw under mass exploitation, and it is usually the difference between patching on your next maintenance window and patching tonight.

Affected versions

From: 6.8

Until: 6.11.3

Fixed in: 6.11.3

How to fix this CVE

Update your Linux kernel to version 6.11.3 or later to remediate CVE-2024-49865, a use-after-free vulnerability in the DRM/xe virtual machine subsystem. This vulnerability allows local attackers with standard user privileges to trigger a kernel crash or potential code execution by racing the VM creation and destruction ioctls. Ensure all systems running kernel versions 6.8 through 6.11.2 are patched immediately.

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 if version is between 6.8 and 6.11.2 (vulnerable range)
  2. Confirm DRM/xe driver is loaded: lsmod | grep xe — if output is empty, the vulnerable component is not active
  3. Search system logs for UAF or segmentation fault indicators: sudo grep -i 'segfault\|use-after-free\|kernel panic' /var/log/kern.log /var/log/messages
  4. After patching, reboot and verify: uname -r — confirm kernel version is 6.11.3 or later

FAQ

What is CVE-2024-49865?

CVE-2024-49865 is a use-after-free vulnerability in the Linux kernel's DRM/xe (Intel graphics) virtual machine subsystem. An attacker can predict the VM ID before creation completes and destroy it while the creation operation still holds a reference, leading to memory corruption.

Is CVE-2024-49865 being actively exploited?

No, CVE-2024-49865 is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog and no public exploits are available as of the disclosure date.

What versions of Kernel are affected by CVE-2024-49865?

Linux kernel versions 6.8 through 6.11.2 are vulnerable. The vulnerability has been patched in version 6.11.3 and later stable releases.

How do I check if my server is vulnerable to CVE-2024-49865?

Run `uname -r` to display your kernel version. If the output shows a version between 6.8 and 6.11.2 (inclusive), your system is vulnerable. Additionally, verify DRM/xe support with `lsmod | grep xe` — vulnerability only affects systems with the DRM/xe driver loaded.

Does Defensia detect CVE-2024-49865?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If the Linux kernel is installed on a monitored server running version 6.8–6.11.2, CVE-2024-49865 will appear in your dashboard with remediation steps.

Related Kernel CVEs

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CVE-2026-53228CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6_tunnel_xmit() caches the inner IPv6 header pointer at function entry and continues using it after iptunnel_handle_offloads(). For GSO skbs, iptunnel_handle_offloads() calls skb_header_unclone(). When the skb header is cloned, skb_header_unclone() can call pskb_expand_head(), which may move the skb head. The pskb_expand_head() contract requires pointers into the skb header to be reloaded after the call. If the later skb_realloc_headroom() branch is not taken, SIT uses the stale iph6 pointer to read the inner hop limit and DS field. That can read from a freed skb head after the old head's remaining clone is released. Reload iph6 after the offload helper succeeds and before subsequent reads from the inner IPv6 header. Keep the existing reload after skb_realloc_headroom(), since that branch can also replace the skb.

References

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