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CVE-2023-52686

17
FAUCET Score

CVE-2023-52686 is a null pointer dereference vulnerability in the Linux kernel's powerpc/powernv component, specifically within the opal_event_init() function, affecting various Debian and Linux kernel versions. Rated Medium (CVSS 5.5), a local attacker with low privileges could cause a denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.11, < 4.19.306CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.268CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.209CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.148CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.75CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 69th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-553.8.1.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-503.11.1.el9_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: kernel-0:5.14.0-427.85.1.el9_4
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2023-52686Low

kernel: powerpc/powernv: Add a null pointer check in opal_event_init()

May 17, 2024

References

git.kernel.org / stable/c/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
Mailing ListPatch
git.kernel.org / stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050
Mailing ListPatch
git.kernel.org / stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
Mailing ListPatch
git.kernel.org / stable/c/a14c55eb461d630b836f80591d8caf1f74e62877
Mailing ListPatch
git.kernel.org / stable/c/c0b111ea786ddcc8be0682612830796ece9436c7
Mailing ListPatch
git.kernel.org / stable/c/e08c2e275fa1874de945b87093f925997722ee42
Mailing ListPatch
git.kernel.org / stable/c/e6ad05e3ae9c84c5a71d7bb2d44dc845ae7990cf
Mailing ListPatch
git.kernel.org / stable/c/e93d7cf4c1ddbcd846739e7ad849f955a4f18031
Mailing ListPatch
lists.debian.org / debian-lts-announce/2024/06/msg00016.html
Mailing List