CVE-2026-80862

UNKNOWN 0.0

nvme-tcp: fix usage of page_frag_cache

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix usage of page_frag_cache nvme uses page_frag_cache to preallocate PDU for each preallocated request of block device. Block devices are created in parallel threads, consequently page_frag_cache is used in not thread-safe manner. That leads to incorrect refcounting of backstore pages and premature free. That can be catched by !sendpage_ok inside network stack: WARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931 skb_splice_from_iter+0xfa/0x310. tcp_sendmsg_locked+0x782/0xce0 tcp_sendmsg+0x27/0x40 sock_sendmsg+0x8b/0xa0 nvme_tcp_try_send_cmd_pdu+0x149/0x2a0 Then random panic may occur. Fix that by serializing the usage of page_frag_cache.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Sep 4, 2026

Stay Ahead of the Next One

Get instant alerts for linux linux

Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

Linux / Linux

4e893ca8117022de68ce1b61c0309e3d17bb8a25 < d19f98c79f1b7e09e4cdf5c20d626e571e487467 4e893ca8117022de68ce1b61c0309e3d17bb8a25 < 64561afb42d8390695bf810d9bbd087cbca00291 4e893ca8117022de68ce1b61c0309e3d17bb8a25 < 0a9750263ffacbbd2048a391fd4bd22e2146c57d 4e893ca8117022de68ce1b61c0309e3d17bb8a25 < 6e4cf281558709b92ec2ca3054fe2ffc69266ef9 4e893ca8117022de68ce1b61c0309e3d17bb8a25 < 36ac05f7cfd59d90c597071304b14e98090d5dd1

Linux / Linux

6.12

References

NVD ↗ CVE.org ↗ EPSS Data ↗

git.kernel.org: https://git.kernel.org/stable/c/d19f98c79f1b7e09e4cdf5c20d626e571e487467 git.kernel.org: https://git.kernel.org/stable/c/64561afb42d8390695bf810d9bbd087cbca00291 git.kernel.org: https://git.kernel.org/stable/c/0a9750263ffacbbd2048a391fd4bd22e2146c57d git.kernel.org: https://git.kernel.org/stable/c/6e4cf281558709b92ec2ca3054fe2ffc69266ef9 git.kernel.org: https://git.kernel.org/stable/c/36ac05f7cfd59d90c597071304b14e98090d5dd1