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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97980
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:26 UTC
Updated2026-09-25 11:17:26 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix NULL pointer dereference in debug_set_level() Commit a2cec6863709 ("s390/debug: Add s390dbf kernel parameter") incorrectly removed a null-id check from debug_set_level(), introducing a possible NULL pointer dereference for debug-API users that put debug_register() results unchecked into debug_set_level(). Fix this by moving the check from the internal _debug_set_level() variant back to the external debug_set_level() wrapper.

Risk And Classification

EPSS: 0.001550000 probability, percentile 0.039810000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a2cec6863709d6673a025acc066c962b85a75842 716e1cd3783806929407dbd596e6b1118971eb9e git Not specified
CNA Linux Linux affected a2cec6863709d6673a025acc066c962b85a75842 b1eb31d533cdfcae1011ed53850d52f36afe5774 git Not specified
CNA Linux Linux affected 7.2 Not specified
CNA Linux Linux unaffected 7.2 semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b1eb31d533cdfcae1011ed53850d52f36afe5774 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/716e1cd3783806929407dbd596e6b1118971eb9e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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