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Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix NULL dereference on notify error path Since commit b5daf93b809d1 ("firmware: arm_scmi: Avoid notifier registration for unsupported events") the call chains leading to the helper __scmi_event_handler_get_ops expect an ERR_PTR to be returned on failure to get an handler for the requested event key, while the current helper can still return a NULL when no handler could be found or created. Fix by forcing an ERR_PTR return value when the handler reference is NULL.

PUBLISHED Reserved 2026-03-09 | Published 2026-04-24 | Updated 2026-04-24 | Assigner Linux

Product status

Default status
unaffected

b5daf93b809d13a194f8a8eeacfab1cfa241bbc3 (git) before 70d9bd9a2e683afe6200b0c20af22f06f1a199a4
affected

b5daf93b809d13a194f8a8eeacfab1cfa241bbc3 (git) before 8414d2800c34528467df23ce6192c254a73e4459
affected

b5daf93b809d13a194f8a8eeacfab1cfa241bbc3 (git) before 555317d6100164748f7d09f80142739bd29f0cda
affected

Default status
affected

6.17
affected

Any version before 6.17
unaffected

6.18.20 (semver)
unaffected

6.19.10 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/70d9bd9a2e683afe6200b0c20af22f06f1a199a4

git.kernel.org/...c/8414d2800c34528467df23ce6192c254a73e4459

git.kernel.org/...c/555317d6100164748f7d09f80142739bd29f0cda

cve.org (CVE-2026-31544)

nvd.nist.gov (CVE-2026-31544)

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