CVE-2024-27026 vmxnet3: Fix missing reserved tailroom
A missing reserved tailroom in the vmxnet3 driver causes kernel warnings and potential crashes during XDP processing, requiring a patch.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-27026?
CVE-2024-27026 is a high-severity denial of service vulnerability in Linux kernel, published on 1 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
vmxnet3: Fix missing reserved tailroom
Use rbi->len instead of rcd->len for non-dataring packet.
Found issue: XDP_WARN: xdp_update_frame_from_buff(line:278): Driver BUG: missing reserved tailroom WARNING: CPU: 0 PID: 0 at net/core/xdp.c:586 xdp_warn+0xf/0x20 CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W O 6.5.1 #1 RIP: 0010:xdp_warn+0xf/0x20 ... ? xdp_warn+0xf/0x20 xdp_do_redirect+0x15f/0x1c0 vmxnet3_run_xdp+0x17a/0x400 [vmxnet3] vmxnet3_process_xdp+0xe4/0x760 [vmxnet3] ? vmxnet3_tq_tx_complete.isra.0+0x21e/0x2c0 [vmxnet3] vmxnet3_rq_rx_complete+0x7ad/0x1120 [vmxnet3] vmxnet3_poll_rx_only+0x2d/0xa0 [vmxnet3] __napi_poll+0x20/0x180 net_rx_action+0x177/0x390
Which versions are affected by CVE-2024-27026?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-27026?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-27026 being exploited?
There is no known exploitation of CVE-2024-27026 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-27026, DEBIAN-CVE-2024-27026, GHSA-qw45-gv2r-frwm, UBUNTU-CVE-2024-27026.