We use necessary cookies to keep DataHouse.pl working and optional cookies for analytics and marketing. You can accept all, reject optional cookies, or configure your choices.

OK, I AGREE I DISAGREE CHANGE THE CONSENTS

Thanks to cookies and similar technologies (hereinafter referred to as "cookies"), we can improve the functionality of our website and display content tailored to your needs and expectations.

For more information on the use of cookies, please see our [Cookie Policy].

I agree to:

Analytical use of cookies

Marketing use of cookies

Use of necessary cookies (always active)

Your preferences regarding cookies, expressed after logging in to the website, will be assigned to your Datahouse.pl account. This ensures that it is also saved if you sign in to your account from another device or browser.

CONFIRM SELECTION CANCEL

CVE-2026-46322

In the Linux kernel, the following vulnerability has been resolved: tun: free page on build_skb failure in tun_xdp_one() When build_skb() fails in tun_xdp_one(), the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhost_net_build_xdp() allocated for the frame. As with the short-frame rejection path, tun_sendmsg() discards the per-buffer error and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page. Each build_skb() failure in a batch leaks one page-frag chunk. Free the page before taking the error path, matching the put_page() the other error exits of tun_xdp_one() already perform.

CVE-2026-46322CVSS 7.1Linux

CVE-2026-46322

In the Linux kernel, the following vulnerability has been resolved: tun: free page on build_skb failure in tun_xdp_one() When build_skb() fails in tun_xdp_one(), the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhost_net_build_xdp() allocated for the frame. As with the short-frame rejection path, tun_sendmsg() discards the per-buffer error and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page. Each build_skb() failure in a batch leaks one page-frag chunk. Free the page before taking the error path, matching the put_page() the other error exits of tun_xdp_one() already perform.

CVSS: 7.1 HIGH
EPSS: 2.89%
Known exploited: not in KEV
Product: -

What is known

In the Linux kernel, the following vulnerability has been resolved: tun: free page on build_skb failure in tun_xdp_one() When build_skb() fails in tun_xdp_one(), the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhost_net_build_xdp() allocated for the frame. As with the short-frame rejection path, tun_sendmsg() discards the per-buffer error and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page. Each build_skb() failure in a batch leaks one page-frag chunk. Free the page before taking the error path, matching the put_page() the other error exits of tun_xdp_one() already perform.

Sources

Back to security hub Contact DataHouse