01 Record

CVE-2026-23409

apparmor: fix differential encoding verification

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

apparmor: fix differential encoding verification

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.17% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 7.1% of scored records. A rank, not a probability.
NVD base score: 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-04-01 08:36Z7 MO AGO

Last updated

2026-05-11 22:06Z5 MO AGO

Reserved

2026-01-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base
CWE-372Incomplete Internal State DistinctionBase

Data version

5.2

Document digest

8afb6dc1434329efa213c6a211ab09a2308b06ff4ad295c16ec437cae9a65485

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < ff7c73744fafe944ed9a7b2b7cf6c8d5557a3d84, 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < 1439150cd3c411228b387ab5efca92199d2a659a, 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < 0fab44285445e9012674396d5c1236a67da518e0, 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < f90e3ecd9e1ed69f1a370f866ceed1f104f3ab4a, 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < 34fc60b125ed1d4eb002c76b0664bf0619492167, 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < 623a9d211bbbb031bb1cbdb38b23487648167f8a, 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < 1ff4857fac56ac5a90ee63b24db05fa5e91a45aa, 031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3 to < 39440b137546a3aa383cfdabc605fb73811b6093, 4.17—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/ff7c73744fafe944ed9a7b2b7cf6c8d5557a3d84
git.kernel.orghttps://git.kernel.org/stable/c/1439150cd3c411228b387ab5efca92199d2a659a
git.kernel.orghttps://git.kernel.org/stable/c/0fab44285445e9012674396d5c1236a67da518e0
git.kernel.orghttps://git.kernel.org/stable/c/f90e3ecd9e1ed69f1a370f866ceed1f104f3ab4a
git.kernel.orghttps://git.kernel.org/stable/c/34fc60b125ed1d4eb002c76b0664bf0619492167
git.kernel.orghttps://git.kernel.org/stable/c/623a9d211bbbb031bb1cbdb38b23487648167f8a
git.kernel.orghttps://git.kernel.org/stable/c/1ff4857fac56ac5a90ee63b24db05fa5e91a45aa
git.kernel.orghttps://git.kernel.org/stable/c/39440b137546a3aa383cfdabc605fb73811b6093

07 Fixed in

Debian 12

linux
Fixed in 6.1.164-1

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

Debian 13

linux
Fixed in 6.12.74-2

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

Debian 14

linux
Fixed in 6.19.6-2

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