01 Record

CVE-2026-43405

libceph: Use u32 for non-negative values in ceph_monmap_decode()

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

View raw JSON

02 Description

libceph: Use u32 for non-negative values in ceph_monmap_decode()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 48.3% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-05-08 14:21Z5 MO AGO

Last updated

2026-10-19 19:16Z10 DAYS AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-190Integer Overflow or WraparoundBase
CWE-908Use of Uninitialized ResourceBase

Data version

5.2

Document digest

9e8a495ca0df68693a64a177792002c829829353ca616fc404dea86b778db178

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa5cbd5fc22d5043a8a76e15d75d031fe24d1f69c to < ee5588e2bc41acb73f6676c0520420c107cd0140, a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c to < 86f7060cd638d6eb042e8ed780fb83a59ca0dcb3, a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c to < 5f2806684b05bd24d05c091083b8e2517ba8ffac, a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c to < b268984ae88cb0dcd7a8e8263962c748448e26e8, a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c to < ba0a4df8c563536857dcbf7b4dbd0f2a15f57ace, a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c to < 08bc6173fd611ad5a40f472bf5f15b92aea0fe40, a5cbd5fc22d5043a8a76e15d75d031fe24d1f69c to < 770444611f047dbfd4517ec0bc1b179d40c2f346, 5.11—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/ee5588e2bc41acb73f6676c0520420c107cd0140
git.kernel.orghttps://git.kernel.org/stable/c/86f7060cd638d6eb042e8ed780fb83a59ca0dcb3
git.kernel.orghttps://git.kernel.org/stable/c/5f2806684b05bd24d05c091083b8e2517ba8ffac
git.kernel.orghttps://git.kernel.org/stable/c/b268984ae88cb0dcd7a8e8263962c748448e26e8
git.kernel.orghttps://git.kernel.org/stable/c/ba0a4df8c563536857dcbf7b4dbd0f2a15f57ace
git.kernel.orghttps://git.kernel.org/stable/c/08bc6173fd611ad5a40f472bf5f15b92aea0fe40
git.kernel.orghttps://git.kernel.org/stable/c/770444611f047dbfd4517ec0bc1b179d40c2f346

07 Fixed in

Debian 12

linux
Fixed in 6.1.170-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.85-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.19.10-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.