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| author | Alexander Bulekov <alxndr@bu.edu> | 2023-05-01 10:19:56 -0400 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2023-05-02 10:03:26 +0200 |
| commit | 7915bd06f25e1803778081161bf6fa10c42dc7cd (patch) | |
| tree | 72dc066a0c4d87dc647fe03b78426bc8e21de136 /common-user | |
| parent | b08dc0f1b7b7b3be27ed3ffd72deeb02a1f669e7 (diff) | |
| download | qemu-7915bd06f25e1803778081161bf6fa10c42dc7cd.zip qemu-7915bd06f25e1803778081161bf6fa10c42dc7cd.tar.gz qemu-7915bd06f25e1803778081161bf6fa10c42dc7cd.tar.bz2 | |
async: avoid use-after-free on re-entrancy guard
A BH callback can free the BH, causing a use-after-free in aio_bh_call.
Fix that by keeping a local copy of the re-entrancy guard pointer.
Buglink: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58513
Fixes: 9c86c97f12 ("async: Add an optional reentrancy guard to the BH API")
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20230501141956.3444868-1-alxndr@bu.edu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'common-user')
0 files changed, 0 insertions, 0 deletions