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CVE-2023-52503

18
FAUCET Score

CVE-2023-52503 is a use-after-free vulnerability in the Linux kernel's AMDTEE driver, specifically within the amdtee_close_session function. This flaw arises from a race condition where a session object can be freed while another thread attempts to re-allocate it, leading to memory corruption. With a CVSS score of 7.0 (HIGH), successful exploitation requires local access and high attack complexity, but could result in high impact to confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.6, < 5.10.199CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.136CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.59CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.5.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 47th percentile among its peer group of 1,525 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2023-52503Low

kernel: tee: amdtee: fix use-after-free vulnerability in amdtee_close_session

Mar 2, 2024

References

git.kernel.org / stable/c/1680c82929bc14d706065f123dab77f2f1293116
Patch
git.kernel.org / stable/c/1c95574350cd63bc3c5c2fa06658010768f2a0ce
Patch
git.kernel.org / stable/c/60c3e7a00db954947c265b55099c21b216f2a05c
Patch
git.kernel.org / stable/c/da7ce52a2f6c468946195b116615297d3d113a27
Patch
git.kernel.org / stable/c/f4384b3e54ea813868bb81a861bf5b2406e15d8f
Patch