nvme-tcp: fix usage of page_frag_cache
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.
CVE-2026-80862
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80862
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
"lessThan": "d19f98c79f1b7e09e4cdf5c20d626e571e487467",
"versionType": "git"
},
{
"status": "affected",
"version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
"lessThan": "64561afb42d8390695bf810d9bbd087cbca00291",
"versionType": "git"
},
{
"status": "affected",
"version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
"lessThan": "0a9750263ffacbbd2048a391fd4bd22e2146c57d",
"versionType": "git"
},
{
"status": "affected",
"version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
"lessThan": "6e4cf281558709b92ec2ca3054fe2ffc69266ef9",
"versionType": "git"
},
{
"status": "affected",
"version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
"lessThan": "36ac05f7cfd59d90c597071304b14e98090d5dd1",
"versionType": "git"
},
{
"status": "affected",
"version": "c57506918b078ecab7dedebef0f34dbc23ae2e46",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.160",
"lessThan": "6.7",
"versionType": "semver"
}
],
"programFiles": [
"drivers/nvme/host/tcp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.108",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.49",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.13",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2.3",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/nvme/host/tcp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80862
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46640 · Revision 1
- Added to Heist Feed
- Publisher date