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[kernel] Improve sys_signal signal number validation - reject 0#2658

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ghaerr merged 1 commit intomasterfrom
signal2
Apr 26, 2026
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[kernel] Improve sys_signal signal number validation - reject 0#2658
ghaerr merged 1 commit intomasterfrom
signal2

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@ghaerr ghaerr commented Apr 26, 2026

Rejects signal 0. While seemingly not a big deal, accepting such corrupts task data, referencing task->sig.action[-1].

Found by ChatGPT in #2646.

@ghaerr ghaerr merged commit d99d868 into master Apr 26, 2026
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@ghaerr ghaerr deleted the signal2 branch April 26, 2026 18:38
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