CVE-2026-90434 PUBLISHED

isofs: release zisofs block pointer buffer head

Assigner: Linux
Reserved: 11.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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

isofs: release zisofs block pointer buffer head

zisofs_fill_pages() reads the compressed block pointer table. The error paths release the current buffer_head, the loop also releases the old buffer_head when it advances. However, the success path leaves the last buffer_head referenced. Release it before returning success.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to dbcc7d1b818162aeab2e97fd217d86546d9fde15 (excl.)
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to ec33e6b7a1de20d7e623b12633191a855445657d (excl.)
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to 0c2c54a7d174edc845f7bae24179fe72a926d10f (excl.)
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to 5677737c2cedf417c0fcf61540b9cef0e62273d4 (excl.)
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to f2a1611065c700a374b31c5cc8a7587f5e3bfe73 (excl.)
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to 106e1a3b2b3454fbda63a59e9290cb9a253f81aa (excl.)
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to 3371d30a97a257b7b5f2c8009612e9d452180f0a (excl.)
  • affected from 59bc055211b8d266ab6089158058bf8268e02006 to 2f7dd9b86fe4076059e6a4a2a2c5d565afd76b9e (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 2.6.33 is affected
  • unaffected from 0 to 2.6.33 (excl.)
  • 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 6.18.52 to 6.18.* (incl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References