01 Record

CVE-2026-23352

x86/efi: defer freeing of boot services memory

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

x86/efi: defer freeing of boot services memory

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: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.6% 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: Low. 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

2026-03-25 10:27Z5 MO AGO

Last updated

2026-05-23 16:04Z3 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

3aa6b1e038abd39a423888b64b1d08300382fe929afedeca5fbba7832333d205

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0aed459e8487eb6ebdb4efe8cefe1eafbc704b30 to < 4a2cb90c538f06c873a187aa743575d48685d7a6, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < 7131bd1fecc749bc94fb44aae217bbd8a8a85264, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < 6d8ba221e7aafaa2f284b7d22faee814c28e009d, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < 227688312fece0026fc67a00ba9a0b3611ebe95d, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < 6a25e25279282c5c8ade554c04c6ab9dc7902c64, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < 399da820ecfe6f4f10c143e5c453d3559a04db9c, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < f9e9cc320854a76a39e7bc92d144554f3a727fad, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < 7dcf59422a3b0d20ddda844f856b4a1e0608a326, 916f676f8dc016103f983c7ec54c18ecdbb6e349 to < a4b0bf6a40f3c107c67a24fbc614510ef5719980, 2.6.39.1 to < 2.6.39.2, 3.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/4a2cb90c538f06c873a187aa743575d48685d7a6
git.kernel.orghttps://git.kernel.org/stable/c/7131bd1fecc749bc94fb44aae217bbd8a8a85264
git.kernel.orghttps://git.kernel.org/stable/c/6d8ba221e7aafaa2f284b7d22faee814c28e009d
git.kernel.orghttps://git.kernel.org/stable/c/227688312fece0026fc67a00ba9a0b3611ebe95d
git.kernel.orghttps://git.kernel.org/stable/c/6a25e25279282c5c8ade554c04c6ab9dc7902c64
git.kernel.orghttps://git.kernel.org/stable/c/399da820ecfe6f4f10c143e5c453d3559a04db9c
git.kernel.orghttps://git.kernel.org/stable/c/f9e9cc320854a76a39e7bc92d144554f3a727fad
git.kernel.orghttps://git.kernel.org/stable/c/7dcf59422a3b0d20ddda844f856b4a1e0608a326
git.kernel.orghttps://git.kernel.org/stable/c/a4b0bf6a40f3c107c67a24fbc614510ef5719980

01 Record index

CVE-2026-23352

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-23352

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References