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CVE-2026-98593

s390/debug: Fix NULL pointer dereference in debug_info_copy()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix NULL pointer dereference in debug_info_copy() When debug_register_static() fails, it clears areas, active_pages and active_entries but leaves the area bounds unchanged. Copying such an area, either by opening its view file or via debug_dump(), makes debug_info_copy() dereference the NULL pointers. Skip the copy loop when the source has no areas.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From d72541f945127b4873dace501406a1bc8cd8e1e9 · fixed in 13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225; From d72541f945127b4873dace501406a1bc8cd8e1e9 · fixed in a19bede30f0da5ae56782edac62b5998a7434cba; From d72541f945127b4873dace501406a1bc8cd8e1e9 · fixed in 33f706884821da9cb55b650b7b1d4f2bdf800137; From d72541f945127b4873dace501406a1bc8cd8e1e9 · fixed in 2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b; From d72541f945127b4873dace501406a1bc8cd8e1e9 · fixed in 9c6af88fbefbe77608b77409df23a1617e28398c; From d72541f945127b4873dace501406a1bc8cd8e1e9 · fixed in c593f38e1cdb92f87d01be4c4e5ac12417b1454b; From d72541f945127b4873dace501406a1bc8cd8e1e9 · fixed in 012bfcd5a51082d5a65f096dfb9ca652b5267965

  • Linux Linux

    5.15

  • KernelLinux

    From 5.15.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.55; From 6.19.0 · fixed in 7.2.9

References 7

git.kernel.org