01 Record

CVE-2026-23403

apparmor: fix memory leak in verify_header

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

apparmor: fix memory leak in verify_header

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: 0.18% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 7.4% 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 08:36Z5 MO AGO

Last updated

2026-05-11 22:06Z3 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-401Missing Release of Memory after Effective LifetimeVariant
CWE-763Release of Invalid Pointer or ReferenceBase

Data version

5.2

Document digest

0a86c7df246b091f3f7c6f282902965ddf40862c21917d319702827cd6a9c5df

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxdd51c84857630e77c139afe4d9bba65fc051dc3f to < 9d678eb0fe55c9195d9a253e8c5b82a87b930737, dd51c84857630e77c139afe4d9bba65fc051dc3f to < 6b79abcb3c985e153fcf9d395e1d4336081aabc2, dd51c84857630e77c139afe4d9bba65fc051dc3f to < bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557, dd51c84857630e77c139afe4d9bba65fc051dc3f to < 663ce34786e759ebcbeb3060685c20bcc886d51a, dd51c84857630e77c139afe4d9bba65fc051dc3f to < 786e2c2a87d9c505f33321d1fd23a176aa8ddeb1, dd51c84857630e77c139afe4d9bba65fc051dc3f to < 4f0889f2df1ab99224a5e1ac4e20437eea5fe38e, dd51c84857630e77c139afe4d9bba65fc051dc3f to < 42fd831abfc15d0643c14688f0522556b347e7e6, dd51c84857630e77c139afe4d9bba65fc051dc3f to < e38c55d9f834e5b848bfed0f5c586aaf45acb825, 3.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/9d678eb0fe55c9195d9a253e8c5b82a87b930737
git.kernel.orghttps://git.kernel.org/stable/c/6b79abcb3c985e153fcf9d395e1d4336081aabc2
git.kernel.orghttps://git.kernel.org/stable/c/bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557
git.kernel.orghttps://git.kernel.org/stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a
git.kernel.orghttps://git.kernel.org/stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1
git.kernel.orghttps://git.kernel.org/stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e
git.kernel.orghttps://git.kernel.org/stable/c/42fd831abfc15d0643c14688f0522556b347e7e6
git.kernel.orghttps://git.kernel.org/stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825

01 Record index

CVE-2026-23403

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-23403

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References