01 Record

CVE-2026-53273

tee: optee: prevent use-after-free when the client exits before the supplicant

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

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02 Description

tee: optee: prevent use-after-free when the client exits before the supplicant

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
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

0.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 4.3% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. 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

2026-06-25 08:39Z4 MO AGO

Last updated

2026-10-19 19:57Z9 DAYS AGO

Reserved

2026-06-09

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

48b8f2863489b7a71f0a41dd3edd9090c25407f108bdd3bd4ff5bf463b0179ff

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0180cf0373f84fff61b16f8c062553a13dd7cfca to < 416259cb5bffecaaae5f76539deb535a8c1b2c34, c0a9a948159153be145f9471435695373904ee6d to < 724d0caffd4204b46f78efe22f18f8338031c6e1, ec18520f5edc20a00c34a8c9fdd6507c355e880f to < ae847ab29ded2d7cece4d5970f0edefa4137bf2f, d61cc1a435e6894bfb0dd3370c6f765d2d12825d to < 9a0dc9279d0907b198f205a693aedf696b08145d, fd9d2d6124c293e40797a080adf8a9c237efd8b8 to < d366a01475f927402c96a3fe78bfc06b924fc87d, 70b0d6b0a199c5a3ee6c72f5e61681ed6f759612 to < d5b57bb314d79e99bebb58a53588fa11dd4dbf69, 70b0d6b0a199c5a3ee6c72f5e61681ed6f759612 to < 373152c94e57e9592b68c100e224fbd943cfd608, 70b0d6b0a199c5a3ee6c72f5e61681ed6f759612 to < 387a926ee166814611acecb960207fe2f3c4fd3e, 3eb4911364c764572e9db4ab900a57689a54e8ce, 21234efe2a8474a6d2d01ea9573319de7858ce44, 5.10.235 to < 5.10.259, 5.15.179 to < 5.15.210, 6.1.130 to < 6.1.176, 6.6.80 to < 6.6.143, 6.12.17 to < 6.12.94, 5.4.291 to < 5.5, 6.13.5 to < 6.14, 6.14—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/416259cb5bffecaaae5f76539deb535a8c1b2c34
git.kernel.orghttps://git.kernel.org/stable/c/724d0caffd4204b46f78efe22f18f8338031c6e1
git.kernel.orghttps://git.kernel.org/stable/c/ae847ab29ded2d7cece4d5970f0edefa4137bf2f
git.kernel.orghttps://git.kernel.org/stable/c/9a0dc9279d0907b198f205a693aedf696b08145d
git.kernel.orghttps://git.kernel.org/stable/c/d366a01475f927402c96a3fe78bfc06b924fc87d
git.kernel.orghttps://git.kernel.org/stable/c/d5b57bb314d79e99bebb58a53588fa11dd4dbf69
git.kernel.orghttps://git.kernel.org/stable/c/373152c94e57e9592b68c100e224fbd943cfd608
git.kernel.orghttps://git.kernel.org/stable/c/387a926ee166814611acecb960207fe2f3c4fd3e

07 Fixed in

Debian 12

linux
Fixed in 6.1.176-1

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

Debian 13

linux
Fixed in 6.12.94-1

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

Debian 14

linux
Fixed in 7.0.13-1

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