nvmet: pci-epf: reject too-short SGL segments
In the Linux kernel, the following vulnerability has been resolved: nvmet: pci-epf: reject too-short SGL segments The host controls an SGL segment's length. A nonzero length smaller than one SGL descriptor makes nr_descs zero, so nvmet_pci_epf_get_sgl_segment() reads the type byte of sgls[-1] outside the allocated buffer. If that byte contains a segment descriptor type, the function also copies the preceding 16 bytes and returns a negative descriptor count. The read was reproduced in 3/3 KASAN boots with only the host transfer mocked by a KUnit test: BUG: KASAN: slab-out-of-bounds in nvmet_pci_epf_get_sgl_segment Read of size 1 by task kunit_try_catch Call Trace: nvmet_pci_epf_get_sgl_segment nvmet_pci_epf_short_sgl_test Kernel panic - not syncing: KASAN: panic_on_warn set ... Reject segments that cannot hold one descriptor before allocating or transferring their contents.
CVE-2026-98724
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-2026-98724
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": "0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186",
"lessThan": "2423a05dd0f21330c47ce0ae1cb54a8b0be821e2",
"versionType": "git"
},
{
"status": "affected",
"version": "0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186",
"lessThan": "472df1d103dbe3e9d09156f0667e36180e912c46",
"versionType": "git"
},
{
"status": "affected",
"version": "0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186",
"lessThan": "5d5fbfbbacd1efb13a9bf91317d4fde859ede4b9",
"versionType": "git"
}
],
"programFiles": [
"drivers/nvme/target/pci-epf.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/nvme/target/pci-epf.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98724
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38703 · Revision 1
- Added to Heist Feed
- Publisher date