libceph: Fix multiplication overflow in decode_new_up_state_weight()
In the Linux kernel, the following vulnerability has been resolved: libceph: Fix multiplication overflow in decode_new_up_state_weight() If a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted osdmap, out-of-bounds memory accesses may occur in decode_new_up_state_weight(). This happens because the bounds check for the new_state part is based on calculating its length depending on a len value read from the incoming message. This calculation may overflow leading to an incorrect bounds check. Subsequently, out-of-bounds reads may occur when decoding this part. This patch switches the multiplication to use check_mul_overflow() to abort processing the osdmap if an overflow occurred. Therefore, osdmaps/messages containing large values for len that result in a multiplication overflow are treated as invalid. [ idryomov: rename new_state_len -> new_state_item_size, formatting ]
CVE-2026-68158
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-2026-68158
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": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "2ceee3b77b83052648c40fef965f836fd7699d26",
"versionType": "git"
},
{
"status": "affected",
"version": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "e4473751cc37db41f3f7da25d64a23e0c74570f1",
"versionType": "git"
},
{
"status": "affected",
"version": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "f6961070c326bd158c38fa48756cde2bd78c4aaa",
"versionType": "git"
},
{
"status": "affected",
"version": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "05c90e059269f087becfcce23348496085835c29",
"versionType": "git"
},
{
"status": "affected",
"version": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "143ba49ead77ec483c0326f8aaad8649874e99c4",
"versionType": "git"
},
{
"status": "affected",
"version": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "1732d89dfcd74f6fde9ce70900d316c4a151c153",
"versionType": "git"
},
{
"status": "affected",
"version": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "bee4b5b53e7bff0467fd916cc44c9b190733c6bd",
"versionType": "git"
},
{
"status": "affected",
"version": "930c532869774ebf8af9efe9484c597f896a7d46",
"lessThan": "98917a499ec7064c14fc56d180a4fd636fc2784c",
"versionType": "git"
},
{
"status": "affected",
"version": "1196c36fd53c3b1615eb02f986cb727b1dfc1047",
"versionType": "git"
},
{
"status": "affected",
"version": "bbc3aa6b0e6050b2b2e04a08dd4d6423d576b196",
"versionType": "git"
},
{
"status": "affected",
"version": "6b96b2d473701b45df3fea8dd9796b6ec39e6d54",
"versionType": "git"
},
{
"status": "affected",
"version": "7405d73cea0d0e6c541f5c534078feeb46188844",
"versionType": "git"
},
{
"status": "affected",
"version": "8777c9f654637d56f4c4ca54eb1bc7c609b70085",
"versionType": "git"
},
{
"status": "affected",
"version": "6831c98ce0b8a3e88db64aa224372effd0dcc694",
"versionType": "git"
},
{
"status": "affected",
"version": "032951d32c13b7564dfba82758260cb7aa1149d2",
"versionType": "git"
},
{
"status": "affected",
"version": "14877928f10667a5606383885d004f7185f33718",
"versionType": "git"
},
{
"status": "affected",
"version": "3.10.103",
"lessThan": "3.11",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.12.63",
"lessThan": "3.13",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.14.75",
"lessThan": "3.15",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.16.39",
"lessThan": "3.17",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.18.39",
"lessThan": "3.19",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.1.30",
"lessThan": "4.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.4.17",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.6.6",
"lessThan": "4.7",
"versionType": "semver"
}
],
"programFiles": [
"net/ceph/osdmap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.7",
"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/osdmap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68158
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #41144 · Revision 1
- Added to Heist Feed
- Publisher date