nP0LQmvo0GWQ5ewUtRNCSDAgHvi13cVbNYoNa7DTyQLGpmS7Q== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1781032714; a=rsa-sha256; cv=none; b=NCrcgaw88VjkU2q7M2KKeoj7O3uhy0fsuvmy3p4EMXC7NvuNMEY+XTuWwKN/9QgmV8QD9u lp4ikLsfl8MiCrd+mXFJ5AO3mC2xbfpNc43F6f98qFilvdwidtdl6KLS9T12lrh0+5YTk0 1VDXtQkgLnePKRlop1ZuMQYmnLHGdOg0YZWw811TLODhVKG7v93E8l5rFaYdtNoCWdQ8r7 bg61kja3NhHeKK18Xosp1VnVKgvk6h9B38nG3wVfRjjXsHJGoCmjH6eIcHfNIftNTIptHg Tgajw+qocD3yA9437b/eafMx+ICkzcZ47aLICP2iF8Yek/TaYR/ADug4F14H0g== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1781032714; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=31dIqwq5DLkFKDGLKyIjlnjpqZHbLGS9PdTXBtiU8ms=; b=FNGLETdrbaPBqrnPQy04+pwA23e+nx/Fp0EQEvu54gwiKStjmj8yVGhYZY9+Z8p+abhmyw +0I6nLRuZpLPabKjka0s38dJhs1dudmpemhvhVqmBiP+R6aZfjN6Jidq3mNTyIdLhI+Xh4 5pnweanpRp17fw1evswfBah2Jw/OX065AE1mOPVHsIPmVCechcZRKNoa6gMoqzoxZg3p+v vMwPacZzlLEeS579aKp9JoTQIdnw/4fxIvmTjotyYFUTFqH5iURXHe14QAY8aB2Yu80KDq WA3zHyxhwfSZlV1n85HL2juVSXVcek9ACafpKPU4GYh2GeREnqUVDjF1En7YXA== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4gZdx61FcPzntB for ; Tue, 09 Jun 2026 19:18:34 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 3cd7f by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Tue, 09 Jun 2026 19:18:34 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Mark Johnston Subject: git: fa5581c379fe - releng/14.3 - thr_kill2: Respect p_cansignal() List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: markj X-Git-Repository: src X-Git-Refname: refs/heads/releng/14.3 X-Git-Reftype: branch X-Git-Commit: fa5581c379fec9855e88df49534a973752bbec3f Auto-Submitted: auto-generated Date: Tue, 09 Jun 2026 19:18:34 +0000 Message-Id: <6a28670a.3cd7f.6c4f2f81@gitrepo.freebsd.org> The branch releng/14.3 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=fa5581c379fec9855e88df49534a973752bbec3f commit fa5581c379fec9855e88df49534a973752bbec3f Author: Mark Johnston AuthorDate: 2026-05-25 15:12:57 +0000 Commit: Mark Johnston CommitDate: 2026-06-07 15:53:09 +0000 thr_kill2: Respect p_cansignal() Approved by: so Security: FreeBSD-SA-26:25.thr Security: CVE-2026-45256 Reported by: Igor Gabriel Sousa e Souza Reported by: Yuxiang Yang, Yizhou Zhao, Ao Wang, Xuewei Feng, Qi Li, and Ke Xu from Tsinghua University using GLM-5.1 from Z.ai Reviewed by: emaste, kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D57237 --- sys/kern/kern_thr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/kern/kern_thr.c b/sys/kern/kern_thr.c index 0ab4cb5f7970..de6b141a918b 100644 --- a/sys/kern/kern_thr.c +++ b/sys/kern/kern_thr.c @@ -477,7 +477,7 @@ sys_thr_kill2(struct thread *td, struct thr_kill2_args *uap) p = ttd->td_proc; AUDIT_ARG_PROCESS(p); error = p_cansignal(td, p, uap->sig); - if (uap->sig == 0) + if (error != 0 || uap->sig == 0) ; else if (!_SIG_VALID(uap->sig)) error = EINVAL;