01 Record

CVE-2023-52993

x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL

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

View raw JSON

02 Description

x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.9% 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

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

2025-03-27 16:43Z1 YR AGO

Last updated

2026-05-11 19:36Z3 MO AGO

Reserved

2025-03-27

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

39a0f1dae116498a112b9443c2ad91921bd2fdb267e2b804041f6ffeda61d62a

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa4633adcdbc15ac51afcd0e1395de58cee27cf92 to < 744fe9be9665227335539b7a77ece8d9ff62b6c0, a4633adcdbc15ac51afcd0e1395de58cee27cf92 to < 496975d1a2937f4baadf3d985991b13fc4fc4f27, a4633adcdbc15ac51afcd0e1395de58cee27cf92 to < 8770cd9d7c14aa99c255a0d08186f0be953e1638, a4633adcdbc15ac51afcd0e1395de58cee27cf92 to < e284c273dbb4c1ed68d4204bff94d0b10e4a90f5, a4633adcdbc15ac51afcd0e1395de58cee27cf92 to < 0b08201158f177aab469e356b4d6af24fdd118df, a4633adcdbc15ac51afcd0e1395de58cee27cf92 to < 137f1b47da5f58805da42c1b7811e28c1e353f39, a4633adcdbc15ac51afcd0e1395de58cee27cf92 to < 5fa55950729d0762a787451dc52862c3f850f859, 2.6.18—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/744fe9be9665227335539b7a77ece8d9ff62b6c0
git.kernel.orghttps://git.kernel.org/stable/c/496975d1a2937f4baadf3d985991b13fc4fc4f27
git.kernel.orghttps://git.kernel.org/stable/c/8770cd9d7c14aa99c255a0d08186f0be953e1638
git.kernel.orghttps://git.kernel.org/stable/c/e284c273dbb4c1ed68d4204bff94d0b10e4a90f5
git.kernel.orghttps://git.kernel.org/stable/c/0b08201158f177aab469e356b4d6af24fdd118df
git.kernel.orghttps://git.kernel.org/stable/c/137f1b47da5f58805da42c1b7811e28c1e353f39
git.kernel.orghttps://git.kernel.org/stable/c/5fa55950729d0762a787451dc52862c3f850f859

01 Record index

CVE-2023-52993

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-52993

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References