From: Ryan Gonzalez Date: Mon, 25 Mar 2019 13:00:15 -0500 Subject: run: Only compare the lowest 32 ioctl arg bits for TIOCSTI Closes #2782. Closes: #2783 Approved by: alexlarsson (cherry picked from commit a9107feeb4b8275b78965b36bf21b92d5724699e) Origin: upstream, 1.2.4, commit:8e0aaf4b70d6d7c02c331c655e1a05763485085e Bug: https://github.com/flatpak/flatpak/issues/2782 Bug-Debian: https://bugs.debian.org/925541 Bug-CVE: CVE-2019-10063 --- common/flatpak-run.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/common/flatpak-run.c b/common/flatpak-run.c index 9a69f7b..b3ed2ea 100644 --- a/common/flatpak-run.c +++ b/common/flatpak-run.c @@ -3866,7 +3866,7 @@ setup_seccomp (GPtrArray *argv_array, {SCMP_SYS (clone), &SCMP_A0 (SCMP_CMP_MASKED_EQ, CLONE_NEWUSER, CLONE_NEWUSER)}, /* Don't allow faking input to the controlling tty (CVE-2017-5226) */ - {SCMP_SYS (ioctl), &SCMP_A1(SCMP_CMP_EQ, (int)TIOCSTI)}, + {SCMP_SYS (ioctl), &SCMP_A1 (SCMP_CMP_MASKED_EQ, 0xFFFFFFFFu, (int) TIOCSTI)}, }; struct