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30 lines
762 B
30 lines
762 B
From 498385e3aaf265d6e9786e0a391196cd82ab3260 Mon Sep 17 00:00:00 2001 |
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From: Pingfan Liu <piliu@redhat.com> |
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Date: Fri, 18 Jun 2021 18:14:20 +0800 |
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Subject: [PATCH 6/6] numactl.c: fix use after free |
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The following command can trigger the bug |
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numactl --length 65536 --shm xxx -p0 -V > /dev/null |
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So reset mask to block any new access inside this loop. |
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Signed-off-by: Pingfan Liu <piliu@redhat.com> |
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--- |
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numactl.c | 1 + |
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1 file changed, 1 insertion(+) |
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diff --git a/numactl.c b/numactl.c |
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index 5a9d2df..ae41d6c 100644 |
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--- a/numactl.c |
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+++ b/numactl.c |
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@@ -544,6 +544,7 @@ int main(int ac, char **av) |
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if (nnodes != 1) |
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usage(); |
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numa_bitmask_free(mask); |
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+ mask = NULL; |
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errno = 0; |
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did_node_cpu_parse = 1; |
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numa_set_bind_policy(0); |
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-- |
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2.29.2 |
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