CVE-2026-89964 PUBLISHED

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

Assigner: Linux
Reserved: 11.09.2026 Published: 16.09.2026 Updated: 16.09.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 68659b627770f3c8d8f578e8ddee78a07d5f1d0e (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 8640ade22369e248f77fbdd31a9d71b338499eef (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 21f063e3c2b11fb9078ccdfd3b23634313ce4f0c (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 62d88e93ef5e1e04041e347945f7d7510eba1797 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to bb10d54b74845eb4547baa1b9e908ecd32aa64e1 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 3e2691eeee83a819125dba3f42c74e1b6730d5cd (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 16a62a3f2128b3d86fefc082d8f631becd02bff5 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2 (excl.)
  • affected from 0 to 5.10.270 (excl.)
  • affected from 0 to 5.15.221 (excl.)
  • affected from 0 to 6.1.188 (excl.)
  • affected from 0 to 6.6.157 (excl.)
  • affected from 0 to 6.12.110 (excl.)
  • affected from 0 to 6.18.51 (excl.)
  • affected from 0 to 7.2.5 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • unaffected from 5.10.270 to 5.10.* (incl.)
  • unaffected from 5.15.221 to 5.15.* (incl.)
  • unaffected from 6.1.188 to 6.1.* (incl.)
  • unaffected from 6.6.157 to 6.6.* (incl.)
  • unaffected from 6.12.110 to 6.12.* (incl.)
  • unaffected from 6.18.51 to 6.18.* (incl.)
  • unaffected from 7.2.5 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References