CVE-2026-89964

parisc: eisa: Fix infinite loop when parsing invalid IRQ value

Published Sep 16, 2026 CVSS n/a EPSS < 1% KEV · Not listed

Description

In the Linux kernel, the following vulnerability has been resolved:

parisc: eisa: Fix infinite loop when parsing invalid IRQ value

When an invalid value is passed via the "eisa_irq_edge=" kernel
command line parameter (e.g. "eisa_irq_edge=16,5"), eisa_irq_setup()
prints an error message and continues without advancing the current
position. As a result the same invalid value is parsed again and
again, causing an infinite loop while the kernel boots.

Advance to the next comma-separated entry, or stop parsing when there
is no next entry, before continuing so that the remaining entries are
processed normally.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 68659b627770f3c8d8f578e8ddee78a07d5f1d0e
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 8640ade22369e248f77fbdd31a9d71b338499eef
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 21f063e3c2b11fb9078ccdfd3b23634313ce4f0c
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 62d88e93ef5e1e04041e347945f7d7510eba1797
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< bb10d54b74845eb4547baa1b9e908ecd32aa64e1
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 3e2691eeee83a819125dba3f42c74e1b6730d5cd
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 16a62a3f2128b3d86fefc082d8f631becd02bff5
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2

Linux

affected

Version	Status	Constraints
`2.6.12`	affected	—
`0`	unaffected	< 2.6.12
`5.10.270`	unaffected	≤ 5.10.*
`5.15.221`	unaffected	≤ 5.15.*
`6.1.188`	unaffected	≤ 6.1.*
`6.6.157`	unaffected	≤ 6.6.*
`6.12.110`	unaffected	≤ 6.12.*
`6.18.51`	unaffected	≤ 6.18.*
`7.2.5`	unaffected	≤ 7.2.*
`7.3`	unaffected	≤ *

No data.

Vendor Product Versions

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,68659b627770f3c8d8f578e8ddee78a07d5f1d0e)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8640ade22369e248f77fbdd31a9d71b338499eef)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,21f063e3c2b11fb9078ccdfd3b23634313ce4f0c)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,62d88e93ef5e1e04041e347945f7d7510eba1797)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,bb10d54b74845eb4547baa1b9e908ecd32aa64e1)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,3e2691eeee83a819125dba3f42c74e1b6730d5cd)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,16a62a3f2128b3d86fefc082d8f631becd02bff5)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2)`	affected	code_commit	—

Linux

Linux Kernel

Version	Status	Scheme	Platform
`2.6.12`	affected	semver	—
`[0,2.6.12)`	unaffected	semver	—
`[5.10.270,5.11.0)`	unaffected	semver	—
`[5.15.221,5.16.0)`	unaffected	semver	—
`[6.1.188,6.2.0)`	unaffected	semver	—
`[6.6.157,6.7.0)`	unaffected	semver	—
`[6.12.110,6.13.0)`	unaffected	semver	—
`[6.18.51,6.19.0)`	unaffected	semver	—
`[7.2.5,7.3.0)`	unaffected	semver	—
`[7.3-rc1,*]`	unaffected	semver	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Debian DLA	DLA-4817-1	linux-6.12 security update
Debian DLA	DLA-4841-1	linux security update
Debian DSA	DSA-6528-1	linux security update
Ubuntu USN	USN-8961-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9019-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9020-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9022-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9023-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9024-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9025-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9026-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9029-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-9039-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-9040-1	Linux kernel (Low Latency NVIDIA) vulnerabilities
Ubuntu USN	USN-9066-1	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-9091-1	Linux kernel (NVIDIA Tegra) vulnerabilities

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.216% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/16a62a3f2128b3d86fefc082d8f631becd02bff5
https://git.kernel.org/stable/c/21f063e3c2b11fb9078ccdfd3b23634313ce4f0c
https://git.kernel.org/stable/c/3e2691eeee83a819125dba3f42c74e1b6730d5cd
https://git.kernel.org/stable/c/62d88e93ef5e1e04041e347945f7d7510eba1797
https://git.kernel.org/stable/c/68659b627770f3c8d8f578e8ddee78a07d5f1d0e
https://git.kernel.org/stable/c/8640ade22369e248f77fbdd31a9d71b338499eef
https://git.kernel.org/stable/c/8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2
https://git.kernel.org/stable/c/bb10d54b74845eb4547baa1b9e908ecd32aa64e1

History

Sep 18, 2026 7:45 AM Weaknesses updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-606

Sep 16, 2026 10:45 AM Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references View changes

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: parisc: eisa: Fix infinite loop when parsing invalid IRQ value When an invalid value is passed via the "eisa_irq_edge=" kernel command line parameter (e.g. "eisa_irq_edge=16,5"), eisa_irq_setup() prints an error message and continues without advancing the current position. As a result the same invalid value is parsed again and again, causing an infinite loop while the kernel boots. Advance to the next comma-separated entry, or stop parsing when there is no next entry, before continuing so that the remaining entries are processed normally.
Title		parisc: eisa: Fix infinite loop when parsing invalid IRQ value
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/16a62a3f2128b3d86fefc082d8f631becd02bff5 https://git.kernel.org/stable/c/21f063e3c2b11fb9078ccdfd3b23634313ce4f0c https://git.kernel.org/stable/c/3e2691eeee83a819125dba3f42c74e1b6730d5cd https://git.kernel.org/stable/c/62d88e93ef5e1e04041e347945f7d7510eba1797 https://git.kernel.org/stable/c/68659b627770f3c8d8f578e8ddee78a07d5f1d0e https://git.kernel.org/stable/c/8640ade22369e248f77fbdd31a9d71b338499eef https://git.kernel.org/stable/c/8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2 https://git.kernel.org/stable/c/bb10d54b74845eb4547baa1b9e908ecd32aa64e1