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CVE-2021-47212— net/mlx5: Update error handler for UCTX and UMEM

EPSS 0.01% · P1
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I. Basic Information for CVE-2021-47212

Vulnerability Information
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Vulnerability Title
net/mlx5: Update error handler for UCTX and UMEM
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Update error handler for UCTX and UMEM In the fast unload flow, the device state is set to internal error, which indicates that the driver started the destroy process. In this case, when a destroy command is being executed, it should return MLX5_CMD_STAT_OK. Fix MLX5_CMD_OP_DESTROY_UCTX and MLX5_CMD_OP_DESTROY_UMEM to return OK instead of EIO. This fixes a call trace in the umem release process - [ 2633.536695] Call Trace: [ 2633.537518] ib_uverbs_remove_one+0xc3/0x140 [ib_uverbs] [ 2633.538596] remove_client_context+0x8b/0xd0 [ib_core] [ 2633.539641] disable_device+0x8c/0x130 [ib_core] [ 2633.540615] __ib_unregister_device+0x35/0xa0 [ib_core] [ 2633.541640] ib_unregister_device+0x21/0x30 [ib_core] [ 2633.542663] __mlx5_ib_remove+0x38/0x90 [mlx5_ib] [ 2633.543640] auxiliary_bus_remove+0x1e/0x30 [auxiliary] [ 2633.544661] device_release_driver_internal+0x103/0x1f0 [ 2633.545679] bus_remove_device+0xf7/0x170 [ 2633.546640] device_del+0x181/0x410 [ 2633.547606] mlx5_rescan_drivers_locked.part.10+0x63/0x160 [mlx5_core] [ 2633.548777] mlx5_unregister_device+0x27/0x40 [mlx5_core] [ 2633.549841] mlx5_uninit_one+0x21/0xc0 [mlx5_core] [ 2633.550864] remove_one+0x69/0xe0 [mlx5_core] [ 2633.551819] pci_device_remove+0x3b/0xc0 [ 2633.552731] device_release_driver_internal+0x103/0x1f0 [ 2633.553746] unbind_store+0xf6/0x130 [ 2633.554657] kernfs_fop_write+0x116/0x190 [ 2633.555567] vfs_write+0xa5/0x1a0 [ 2633.556407] ksys_write+0x4f/0xb0 [ 2633.557233] do_syscall_64+0x5b/0x1a0 [ 2633.558071] entry_SYSCALL_64_after_hwframe+0x65/0xca [ 2633.559018] RIP: 0033:0x7f9977132648 [ 2633.559821] Code: 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 55 6f 2d 00 8b 00 85 c0 75 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 49 89 d4 55 [ 2633.562332] RSP: 002b:00007fffb1a83888 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 2633.563472] RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007f9977132648 [ 2633.564541] RDX: 000000000000000c RSI: 000055b90546e230 RDI: 0000000000000001 [ 2633.565596] RBP: 000055b90546e230 R08: 00007f9977406860 R09: 00007f9977a54740 [ 2633.566653] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f99774056e0 [ 2633.567692] R13: 000000000000000c R14: 00007f9977400880 R15: 000000000000000c [ 2633.568725] ---[ end trace 10b4fe52945e544d ]---
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于UCTX和UMEM存在错误处理程序问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 6a6fabbfa3e8c656ff906ae999fb6856410fa4cd ~ a51a6da375d82aed5c8f83abd13e7d060421bd48 -
LinuxLinux 5.2 -

II. Public POCs for CVE-2021-47212

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III. Intelligence Information for CVE-2021-47212

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Same Patch Batch · Linux · 2024-04-10 · 39 CVEs total

CVE-2021-47209sched/fair: Prevent dead task groups from regaining cfs_rq's
CVE-2021-47199net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CVE-2021-47200drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
CVE-2021-47201iavf: free q_vectors before queues in iavf_disable_vf
CVE-2021-47202thermal: Fix NULL pointer dereferences in of_thermal_ functions
CVE-2021-47203scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
CVE-2021-47204net: dpaa2-eth: fix use-after-free in dpaa2_eth_remove
CVE-2021-47205clk: sunxi-ng: Unregister clocks/resets when unbinding
CVE-2021-47206usb: host: ohci-tmio: check return value after calling platform_get_resource()
CVE-2021-47207ALSA: gus: fix null pointer dereference on pointer block
CVE-2021-47198scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
CVE-2021-47210usb: typec: tipd: Remove WARN_ON in tps6598x_block_read
CVE-2021-47211ALSA: usb-audio: fix null pointer dereference on pointer cs_desc
CVE-2021-47214hugetlb, userfaultfd: fix reservation restore on userfaultfd error
CVE-2021-47215net/mlx5e: kTLS, Fix crash in RX resync flow
CVE-2021-47216scsi: advansys: Fix kernel pointer leak
CVE-2021-47217x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails
CVE-2021-47218selinux: fix NULL-pointer dereference when hashtab allocation fails
CVE-2021-47219scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
CVE-2021-47189btrfs: fix memory ordering between normal and ordered work functions

Showing top 20 of 39 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47212

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