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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-80862

nvme-tcp: fix usage of page_frag_cache

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 4e893ca8117022de68ce1b61c0309e3d17bb8a25 to < d19f98c79f1b7e09e4cdf5c20d626e571e487467affected
  • 4e893ca8117022de68ce1b61c0309e3d17bb8a25 to < 64561afb42d8390695bf810d9bbd087cbca00291affected
  • 4e893ca8117022de68ce1b61c0309e3d17bb8a25 to < 0a9750263ffacbbd2048a391fd4bd22e2146c57daffected
  • 4e893ca8117022de68ce1b61c0309e3d17bb8a25 to < 6e4cf281558709b92ec2ca3054fe2ffc69266ef9affected
  • 4e893ca8117022de68ce1b61c0309e3d17bb8a25 to < 36ac05f7cfd59d90c597071304b14e98090d5dd1affected
  • c57506918b078ecab7dedebef0f34dbc23ae2e46affected
  • 6.6.160 to < 6.7affected

Linux Linux

Default version status: affected

  • 6.12affected
  • 0 to < 6.12unaffected
  • 6.12.108 to ≤ 6.12.*unaffected
  • 6.18.49 to ≤ 6.18.*unaffected
  • 7.1.13 to ≤ 7.1.*unaffected
  • 7.2.3 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References