01 Record

CVE-2023-52447

bpf: Defer the free of inner map when necessary

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

bpf: Defer the free of inner map when necessary

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total 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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 16.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-15.

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

2024-02-22 16:21Z2 YR AGO

Last updated

2026-10-15 00:16Z15 DAYS AGO

Reserved

2024-02-20

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant
CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

5b1d966db588d829ffe55fc00f805cc6545071eadeb60520e80081e3bd62076b

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxbba1dc0b55ac462d24ed1228ad49800c238cd6d7 to < 90c445799fd1dc214d7c6279c144e33a35e29ef2, bba1dc0b55ac462d24ed1228ad49800c238cd6d7 to < 37d98fb9c3144c0fddf7f6e99aece9927ac8dce6, bba1dc0b55ac462d24ed1228ad49800c238cd6d7 to < 62fca83303d608ad4fec3f7428c8685680bb01b0, bba1dc0b55ac462d24ed1228ad49800c238cd6d7 to < f91cd728b10c51f6d4a39957ccd56d1e802fc8ee, bba1dc0b55ac462d24ed1228ad49800c238cd6d7 to < bfd9b20c4862f41d4590fde11d70a5eeae53dcc5, bba1dc0b55ac462d24ed1228ad49800c238cd6d7 to < 876673364161da50eed6b472d746ef88242b2368, 5.9—

linuxlinux_kernelbba1dc0b55ac to < 90c445799fd1, bba1dc0b55ac to < 37d98fb9c314, bba1dc0b55ac to < 62fca83303d6, bba1dc0b55ac to < f91cd728b10c, bba1dc0b55ac to < bfd9b20c4862, bba1dc0b55ac to < 876673364161, 5.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/90c445799fd1dc214d7c6279c144e33a35e29ef2
git.kernel.orghttps://git.kernel.org/stable/c/37d98fb9c3144c0fddf7f6e99aece9927ac8dce6
git.kernel.orghttps://git.kernel.org/stable/c/62fca83303d608ad4fec3f7428c8685680bb01b0
git.kernel.orghttps://git.kernel.org/stable/c/f91cd728b10c51f6d4a39957ccd56d1e802fc8ee
git.kernel.orghttps://git.kernel.org/stable/c/bfd9b20c4862f41d4590fde11d70a5eeae53dcc5
git.kernel.orghttps://git.kernel.org/stable/c/876673364161da50eed6b472d746ef88242b2368
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-265688.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.76-1

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

Debian 13

linux
Fixed in 6.6.15-1

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

Debian 14

linux
Fixed in 6.6.15-1

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