[ovs-build] Passed: ovsrobot/ovs#3581 (series_230682 - 0c932cb)

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Tue Feb 23 15:07:30 UTC 2021

Build Update for ovsrobot/ovs

Build: #3581
Status: Passed

Duration: 11 mins and 8 secs
Commit: 0c932cb (series_230682)
Author: Ilya Maximets
Message: ovsdb-cs: Fix use-after-free for the request id.

ovsdb_cs_send_transaction() returns the pointer to the same
'request_id' object that is used internally.  This leads to
situation where transaction in idl and CS module has the
same 'request_id' object.  However, CS module is able to
destroy this transaction id at any time, e.g. if connection
state chnaged, but idl transaction might be still around at
this moment and application might still use it.

Found by running 'make check-ovsdb-cluster' with AddressSanitizer:

  ==79922==ERROR: AddressSanitizer: heap-use-after-free on address
  0x604000167a98 at pc 0x000000626acf bp 0x7ffcdb38a4c0 sp 0x7ffcdb38a4b8
  READ of size 8 at 0x604000167a98 thread T0
    #0 0x626ace in json_destroy lib/json.c:354:18
    #1 0x56d1ab in ovsdb_idl_txn_destroy lib/ovsdb-idl.c:2528:5
    #2 0x53a908 in do_vsctl utilities/ovs-vsctl.c:3008:5
    #3 0x539251 in main utilities/ovs-vsctl.c:203:17
    #4 0x7f7f7e376081 in __libc_start_main (/lib64/libc.so.6+0x27081)
    #5 0x461fed in _start (utilities/ovs-vsctl+0x461fed)

  0x604000167a98 is located 8 bytes inside of 40-byte
                    region [0x604000167a90,0x604000167ab8)
  freed by thread T0 here:
    #0 0x503ac7 in free (utilities/ovs-vsctl+0x503ac7)
    #1 0x626aae in json_destroy lib/json.c:378:9
    #2 0x6adfa2 in ovsdb_cs_run lib/ovsdb-cs.c:625:13
    #3 0x567731 in ovsdb_idl_run lib/ovsdb-idl.c:394:5
    #4 0x56fed1 in ovsdb_idl_txn_commit_block lib/ovsdb-idl.c:3187:9
    #5 0x53a4df in do_vsctl utilities/ovs-vsctl.c:2898:14
    #6 0x539251 in main utilities/ovs-vsctl.c:203:17
    #7 0x7f7f7e376081 in __libc_start_main

  previously allocated by thread T0 here:
    #0 0x503dcf in malloc (utilities/ovs-vsctl+0x503dcf)
    #1 0x594656 in xmalloc lib/util.c:138:15
    #2 0x626431 in json_create lib/json.c:1451:25
    #3 0x626972 in json_integer_create lib/json.c:263:25
    #4 0x62da0f in jsonrpc_create_id lib/jsonrpc.c:563:12
    #5 0x62d9a8 in jsonrpc_create_request lib/jsonrpc.c:570:23
    #6 0x6af3a6 in ovsdb_cs_send_transaction lib/ovsdb-cs.c:1357:35
    #7 0x56e3d5 in ovsdb_idl_txn_commit lib/ovsdb-idl.c:3147:27
    #8 0x56fea9 in ovsdb_idl_txn_commit_block lib/ovsdb-idl.c:3186:22
    #9 0x53a4df in do_vsctl utilities/ovs-vsctl.c:2898:14
    #10 0x539251 in main utilities/ovs-vsctl.c:203:17
    #11 0x7f7f7e376081 in __libc_start_main

Fixes: 1c337c43ac1c ("ovsdb-idl: Break into two layers.")
Signed-off-by: Ilya Maximets <i.maximets at ovn.org>
Signed-off-by: 0-day Robot <robot at bytheb.org>

View the changeset: https://github.com/ovsrobot/ovs/commit/0c932cb79280

View the full build log and details: https://travis-ci.com/github/ovsrobot/ovs/builds/217981796?utm_medium=notification&utm_source=email


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