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CVE-2022-49930— RDMA/hns: Fix NULL pointer problem in free_mr_init()

EPSS 0.07% · P22

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux70f92521584f1d1e8268311ee84413307b0fdea8< 0e23e85d86b78e734dd6654f1b69fbaeb5534c81affected
70f92521584f1d1e8268311ee84413307b0fdea8< 12bcaf87d8b66d8cd812479c8a6349dcb245375caffected
5.18affected
< 5.18unaffected
6.0.8≤ 6.0.*unaffected
6.1≤ *unaffected
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I. Basic Information for CVE-2022-49930

Vulnerability Information
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Vulnerability Title
RDMA/hns: Fix NULL pointer problem in free_mr_init()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix NULL pointer problem in free_mr_init() Lock grab occurs in a concurrent scenario, resulting in stepping on a NULL pointer. It should be init mutex_init() first before use the lock. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Call trace: __mutex_lock.constprop.0+0xd0/0x5c0 __mutex_lock_slowpath+0x1c/0x2c mutex_lock+0x44/0x50 free_mr_send_cmd_to_hw+0x7c/0x1c0 [hns_roce_hw_v2] hns_roce_v2_dereg_mr+0x30/0x40 [hns_roce_hw_v2] hns_roce_dereg_mr+0x4c/0x130 [hns_roce_hw_v2] ib_dereg_mr_user+0x54/0x124 uverbs_free_mr+0x24/0x30 destroy_hw_idr_uobject+0x38/0x74 uverbs_destroy_uobject+0x48/0x1c4 uobj_destroy+0x74/0xcc ib_uverbs_cmd_verbs+0x368/0xbb0 ib_uverbs_ioctl+0xec/0x1a4 __arm64_sys_ioctl+0xb4/0x100 invoke_syscall+0x50/0x120 el0_svc_common.constprop.0+0x58/0x190 do_el0_svc+0x30/0x90 el0_svc+0x2c/0xb4 el0t_64_sync_handler+0x1a4/0x1b0 el0t_64_sync+0x19c/0x1a0
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RDMA hns free_mr_init空指针问题，可能导致系统崩溃。
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 70f92521584f1d1e8268311ee84413307b0fdea8 ~ 0e23e85d86b78e734dd6654f1b69fbaeb5534c81 -
LinuxLinux 5.18 -

II. Public POCs for CVE-2022-49930

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III. Intelligence Information for CVE-2022-49930

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Same Patch Batch · Linux · 2025-05-01 · 245 CVEs total

CVE-2022-49852riscv: process: fix kernel info leakage
CVE-2022-49836siox: fix possible memory leak in siox_device_add()
CVE-2022-49837bpf: Fix memory leaks in __check_func_call
CVE-2022-49838sctp: clear out_curr if all frag chunks of current msg are pruned
CVE-2022-49840bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb()
CVE-2022-49839scsi: scsi_transport_sas: Fix error handling in sas_phy_add()
CVE-2022-49841serial: imx: Add missing .thaw_noirq hook
CVE-2022-49842ASoC: core: Fix use-after-free in snd_soc_exit()
CVE-2022-49844can: dev: fix skb drop check
CVE-2022-49845can: j1939: j1939_send_one(): fix missing CAN header initialization
CVE-2022-49846udf: Fix a slab-out-of-bounds write bug in udf_find_entry()
CVE-2022-49847net: ethernet: ti: am65-cpsw: Fix segmentation fault at module unload
CVE-2022-49849btrfs: fix match incorrectly in dev_args_match_device
CVE-2022-49848phy: qcom-qmp-combo: fix NULL-deref on runtime resume
CVE-2022-49850nilfs2: fix deadlock in nilfs_count_free_blocks()
CVE-2022-49851riscv: fix reserved memory setup
CVE-2022-49863can: af_can: fix NULL pointer dereference in can_rx_register()
CVE-2022-49862tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
CVE-2022-49864drm/amdkfd: Fix NULL pointer dereference in svm_migrate_to_ram()
CVE-2022-49861dmaengine: mv_xor_v2: Fix a resource leak in mv_xor_v2_remove()

Showing top 20 of 245 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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