01 Record

CVE-2023-53326

powerpc: Don't try to copy PPR for task with NULL pt_regs

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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02 Description

powerpc: Don't try to copy PPR for task with NULL pt_regs

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 ImpactpartialSuccessful exploitation gives limited 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

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.3% 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

Modified. NVD last modified this record on 2026-06-17.

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

2025-09-16 16:12Z11 MO AGO

Last updated

2026-05-11 19:42Z3 MO AGO

Reserved

2025-09-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

72949a4e67b312b6c7d6ece94611ac2504d027c91b813734b38fa9bedc20dba0

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxfa439810cc1b3c927ec24ede17d02467e1b143a1 to < 80a4200d51e5a7e046f4a90f5faa5bafd5a60c58, fa439810cc1b3c927ec24ede17d02467e1b143a1 to < 7624973bc15b76d000e8e6f9b8080fcb76d36595, fa439810cc1b3c927ec24ede17d02467e1b143a1 to < 064a1c7b0f8403260d77627e62424a72ca26cee2, fa439810cc1b3c927ec24ede17d02467e1b143a1 to < 01849382373b867ddcbe7536b9dfa89f3bcea60e, fa439810cc1b3c927ec24ede17d02467e1b143a1 to < fd7276189450110ed835eb0a334e62d2f1c4e3be, 4.8—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/80a4200d51e5a7e046f4a90f5faa5bafd5a60c58
git.kernel.orghttps://git.kernel.org/stable/c/7624973bc15b76d000e8e6f9b8080fcb76d36595
git.kernel.orghttps://git.kernel.org/stable/c/064a1c7b0f8403260d77627e62424a72ca26cee2
git.kernel.orghttps://git.kernel.org/stable/c/01849382373b867ddcbe7536b9dfa89f3bcea60e
git.kernel.orghttps://git.kernel.org/stable/c/fd7276189450110ed835eb0a334e62d2f1c4e3be

01 Record index

CVE-2023-53326

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-53326

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References