CVE-2026-68433

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Source
https://cve.org/CVERecord?id=CVE-2026-68433
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68433.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-68433
Downstream
Published
2026-08-12T00:07:20Z
Modified
2026-08-21T03:30:25Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H CVSS Calculator
Summary
libceph: bound get_version reply decode to front len
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68433.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
513a8243d67f8e8d27f2883bd2f18bc87c7ca376
Fixed
1307028f082756bf453e1889aee9983d30643a4b
Fixed
f6cbf6878f3a1503c872ba8f1e69a58ee68d8b2e
Fixed
72a35070fcefa229b1b031aa7482ad3788e18f07
Fixed
340e0386aa39da181015bee38f309018c335ce16
Fixed
d60de8253c85a02d0e6194b0735e7a562981a04c
Fixed
4e7ebfaa0d14cf50e44041bfde38070d6dbc019f
Fixed
0d934c934ec746d53fc7e4f53239792647bbae63
Fixed
d3c32939fa0e3ee9b883b9a0fd1972c5c444e3d0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68433.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.16.0
Fixed
5.10.265
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.216
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.183
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.148
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.101
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.42
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68433.json"