CVE-2026-53215 net: mvpp2: refill RX buffers before XDP or skb use
A use-after-free vulnerability in the Marvell mvpp2 network driver allows attackers to cause memory corruption or denial of service by triggering RX buffer errors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-53215?
CVE-2026-53215 is a critical use after free vulnerability in Linux kernel, published on 25 Jun 2026. 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:
net: mvpp2: refill RX buffers before XDP or skb use
The RX error path returns the current descriptor buffer to the hardware BM pool. That is only valid while the driver still owns the buffer.
mvpp2_rx_refill() can fail after the current buffer has been handed to XDP or attached to an skb. In those cases mvpp2_run_xdp() may have recycled, redirected, or queued the page for XDP_TX, and an skb free also retires the data buffer. Returning such a buffer to BM lets hardware DMA into memory that is no longer owned by the RX ring.
Refill the BM pool before handing the current buffer to XDP or to the skb. If the allocation fails there, drop the packet and return the still-owned current buffer to BM, preserving the pool depth. Once the refill succeeds, later local drops retire/free the current buffer instead of returning it to BM.
Weakness: CWE-416
Which versions are affected by CVE-2026-53215?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53215?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-53215 being exploited?
There is no known exploitation of CVE-2026-53215 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-53215, DEBIAN-CVE-2026-53215, GHSA-37pv-m98r-vgm8, ROOT-OS-DEBIAN-11-CVE-2026-53215, ROOT-OS-DEBIAN-12-CVE-2026-53215, ROOT-OS-UBUNTU-2204-CVE-2026-53215 and 2 more.