Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow memory leak in ovs_flow_cmd_new Syzkaller reports a memory leak of new_flow in ovs_flow_cmd_new() as it is not freed when an allocation of a key fails. BUG: memory leak unreferenced object 0xffff888116668000 (size 632): comm "syz-executor231", pid 1090, jiffies 4294844701 (age 18.871s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000defa3494>] kmem_cache_zalloc include/linux/slab.h:654 [inline] [<00000000defa3494>] ovs_flow_alloc+0x19/0x180 net/openvswitch/flow_table.c:77 [<00000000c67d8873>] ovs_flow_cmd_new+0x1de/0xd40 net/openvswitch/datapath.c:957 [<0000000010a539a8>] genl_family_rcv_msg_doit+0x22d/0x330 net/netlink/genetlink.c:739 [<00000000dff3302d>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] [<00000000dff3302d>] genl_rcv_msg+0x328/0x590 net/netlink/genetlink.c:800 [<000000000286dd87>] netlink_rcv_skb+0x153/0x430 net/netlink/af_netlink.c:2515 [<0000000061fed410>] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 [<000000009dc0f111>] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] [<000000009dc0f111>] netlink_unicast+0x545/0x7f0 net/netlink/af_netlink.c:1339 [<000000004a5ee816>] netlink_sendmsg+0x8e7/0xde0 net/netlink/af_netlink.c:1934 [<00000000482b476f>] sock_sendmsg_nosec net/socket.c:651 [inline] [<00000000482b476f>] sock_sendmsg+0x152/0x190 net/socket.c:671 [<00000000698574ba>] ____sys_sendmsg+0x70a/0x870 net/socket.c:2356 [<00000000d28d9e11>] ___sys_sendmsg+0xf3/0x170 net/socket.c:2410 [<0000000083ba9120>] __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 [<00000000c00628f8>] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 [<000000004abfdcf4>] entry_SYSCALL_64_after_hwframe+0x61/0xc6 To fix this the patch rearranges the goto labels to reflect the order of object allocations and adds appropriate goto statements on the error paths. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 655e873bf528f0f46ce6b069f9a2daee9621197c before 1ac653cf886cdfc082708c82dc6ac6115cebd2ee; affected ee27d70556a47c3a07e65a60f47e3ea12a255af8 before af4e720bc00a2653f7b9df21755b9978b3d7f386; affected 8b74211bf60b3e0c0ed4fe3d16c92ffdcaaf34eb before ed6c5e8caf55778500202775167e8ccdb1a030cb; affected 6736b61ecf230dd656464de0f514bdeadb384f20 before 70154489f531587996f3e9d7cceeee65cff0001d; affected 0133615a06007684df648feb9d327714e399afd4 before f423c2efd51d7eb1d143c2be7eea233241d9bbbf; affected 32d5fa5bdccec2361fc6c4ed05a7367155b3a1e9 before 70d40674a549d498bd63d5432acf46205da1534b; affected 68bb10101e6b0a6bb44e9c908ef795fc4af99eae before 0c598aed445eb45b0ee7ba405f7ece99ee349c30; affected 4f592e712ea2132f511d545954867d7880df5be2; affected a991a411c3e21ef22507400dbb179ae02029d42c; affected 4.9.337 before 4.10; affected 6.0.16 before 6.1 |
| Linux / Linux | affected 4.14.303 before 4.14.306; affected 4.19.270 before 4.19.273; affected 5.4.229 before 5.4.232; affected 5.10.163 before 5.10.168; affected 5.15.86 before 5.15.93; affected 6.1.2 before 6.1.11 |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1ac653cf886cdfc082708c82dc6ac6115cebd2ee
- https://git.kernel.org/stable/c/af4e720bc00a2653f7b9df21755b9978b3d7f386
- https://git.kernel.org/stable/c/ed6c5e8caf55778500202775167e8ccdb1a030cb
- https://git.kernel.org/stable/c/70154489f531587996f3e9d7cceeee65cff0001d
- https://git.kernel.org/stable/c/f423c2efd51d7eb1d143c2be7eea233241d9bbbf
- https://git.kernel.org/stable/c/70d40674a549d498bd63d5432acf46205da1534b
- https://git.kernel.org/stable/c/0c598aed445eb45b0ee7ba405f7ece99ee349c30
ADP enrichment
No English description supplied.
No references supplied.