CVE-2021-47197
Vulnerability from cvelistv5
Published
2024-04-10 18:56
Modified
2024-11-04 12:01
Severity ?
EPSS score ?
Summary
net/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove()
References
Impacted products
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"id": "CVE-2021-47197",
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"timestamp": "2024-06-21T16:04:48.403112Z",
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"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/cq.c",
"drivers/net/ethernet/mellanox/mlx5/core/debugfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "0",
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: nullify cq-\u003edbg pointer in mlx5_debug_cq_remove()\n\nPrior to this patch in case mlx5_core_destroy_cq() failed it proceeds\nto rest of destroy operations. mlx5_core_destroy_cq() could be called again\nby user and cause additional call of mlx5_debug_cq_remove().\ncq-\u003edbg was not nullify in previous call and cause the crash.\n\nFix it by nullify cq-\u003edbg pointer after removal.\n\nAlso proceed to destroy operations only if FW return 0\nfor MLX5_CMD_OP_DESTROY_CQ command.\n\ngeneral protection fault, probably for non-canonical address 0x2000300004058: 0000 [#1] SMP PTI\nCPU: 5 PID: 1228 Comm: python Not tainted 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:lockref_get+0x1/0x60\nCode: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02\n00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 \u003c48\u003e 8b 17\n48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48\nRSP: 0018:ffff888137dd7a38 EFLAGS: 00010206\nRAX: 0000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe\nRDX: 000000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058\nRBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000\nR13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0\nFS: 00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000)\nknlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0\nCall Trace:\n simple_recursive_removal+0x33/0x2e0\n ? debugfs_remove+0x60/0x60\n debugfs_remove+0x40/0x60\n mlx5_debug_cq_remove+0x32/0x70 [mlx5_core]\n mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core]\n devx_obj_cleanup+0x151/0x330 [mlx5_ib]\n ? __pollwait+0xd0/0xd0\n ? xas_load+0x5/0x70\n ? xa_load+0x62/0xa0\n destroy_hw_idr_uobject+0x20/0x80 [ib_uverbs]\n uverbs_destroy_uobject+0x3b/0x360 [ib_uverbs]\n uobj_destroy+0x54/0xa0 [ib_uverbs]\n ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs]\n ? uverbs_finalize_object+0xd0/0xd0 [ib_uverbs]\n ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs]\n __x64_sys_ioctl+0x3e4/0x8e0"
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"title": "net/mlx5e: nullify cq-\u003edbg pointer in mlx5_debug_cq_remove()",
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"cveId": "CVE-2021-47197",
"datePublished": "2024-04-10T18:56:33.260Z",
"dateReserved": "2024-03-25T09:12:14.116Z",
"dateUpdated": "2024-11-04T12:01:20.622Z",
"state": "PUBLISHED"
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"nvd": "{\"cve\":{\"id\":\"CVE-2021-47197\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-10T19:15:47.940\",\"lastModified\":\"2024-04-10T19:49:51.183\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5e: nullify cq-\u003edbg pointer in mlx5_debug_cq_remove()\\n\\nPrior to this patch in case mlx5_core_destroy_cq() failed it proceeds\\nto rest of destroy operations. mlx5_core_destroy_cq() could be called again\\nby user and cause additional call of mlx5_debug_cq_remove().\\ncq-\u003edbg was not nullify in previous call and cause the crash.\\n\\nFix it by nullify cq-\u003edbg pointer after removal.\\n\\nAlso proceed to destroy operations only if FW return 0\\nfor MLX5_CMD_OP_DESTROY_CQ command.\\n\\ngeneral protection fault, probably for non-canonical address 0x2000300004058: 0000 [#1] SMP PTI\\nCPU: 5 PID: 1228 Comm: python Not tainted 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:lockref_get+0x1/0x60\\nCode: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02\\n00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 \u003c48\u003e 8b 17\\n48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48\\nRSP: 0018:ffff888137dd7a38 EFLAGS: 00010206\\nRAX: 0000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe\\nRDX: 000000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058\\nRBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88\\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000\\nR13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0\\nFS: 00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000)\\nknlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0\\nCall Trace:\\n simple_recursive_removal+0x33/0x2e0\\n ? debugfs_remove+0x60/0x60\\n debugfs_remove+0x40/0x60\\n mlx5_debug_cq_remove+0x32/0x70 [mlx5_core]\\n mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core]\\n devx_obj_cleanup+0x151/0x330 [mlx5_ib]\\n ? __pollwait+0xd0/0xd0\\n ? xas_load+0x5/0x70\\n ? xa_load+0x62/0xa0\\n destroy_hw_idr_uobject+0x20/0x80 [ib_uverbs]\\n uverbs_destroy_uobject+0x3b/0x360 [ib_uverbs]\\n uobj_destroy+0x54/0xa0 [ib_uverbs]\\n ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs]\\n ? uverbs_finalize_object+0xd0/0xd0 [ib_uverbs]\\n ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs]\\n __x64_sys_ioctl+0x3e4/0x8e0\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2ae38157080616a13a9fe3f0b4b6ec0070aa408a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/471c492890557bd58f73314bb4ad85d5a8fd5026\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/76ded29d3fcda4928da8849ffc446ea46871c1c2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.