libceph: bound get_version reply decode to front len
In the Linux kernel, the following vulnerability has been resolved: libceph: bound get_version reply decode to front len handle_get_version_reply() uses msg->front_alloc_len as the decode boundary for MON_GET_VERSION_REPLY. That is the size of the reused reply buffer, not the number of bytes actually received. A truncated reply can therefore pass ceph_decode_need() and decode the second u64 from stale tail bytes left in the buffer by an earlier message, causing an uninitialized memory read. Use msg->front.iov_len as the receive-side decode boundary, matching other libceph reply handlers and limiting decoding to the bytes that were actually read from the wire.
CVE-2026-68433
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-2026-68433
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": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "1307028f082756bf453e1889aee9983d30643a4b",
"versionType": "git"
},
{
"status": "affected",
"version": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "f6cbf6878f3a1503c872ba8f1e69a58ee68d8b2e",
"versionType": "git"
},
{
"status": "affected",
"version": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "72a35070fcefa229b1b031aa7482ad3788e18f07",
"versionType": "git"
},
{
"status": "affected",
"version": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "340e0386aa39da181015bee38f309018c335ce16",
"versionType": "git"
},
{
"status": "affected",
"version": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "d60de8253c85a02d0e6194b0735e7a562981a04c",
"versionType": "git"
},
{
"status": "affected",
"version": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "4e7ebfaa0d14cf50e44041bfde38070d6dbc019f",
"versionType": "git"
},
{
"status": "affected",
"version": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "0d934c934ec746d53fc7e4f53239792647bbae63",
"versionType": "git"
},
{
"status": "affected",
"version": "513a8243d67f8e8d27f2883bd2f18bc87c7ca376",
"lessThan": "d3c32939fa0e3ee9b883b9a0fd1972c5c444e3d0",
"versionType": "git"
}
],
"programFiles": [
"net/ceph/mon_client.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ceph/mon_client.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68433
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41725 · Revision 1
- Added to Heist Feed
- Publisher date