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CVE-2022-49321— xprtrdma: treat all calls not a bcall when bc_serv is NULL

CVSS 7.5 · High EPSS 0.76% · P52

Possible ATT&CK Techniques 1AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux63cae47005af51c937f4cdcc4835f29075add2ba< 8e3943c50764dc7c5f25911970c3ff062ec1f18caffected
63cae47005af51c937f4cdcc4835f29075add2ba< 998d35a2aff4b81a1c784f3aa45cd3afff6814c1affected
63cae47005af51c937f4cdcc4835f29075add2ba< da99331fa62131a38a0947a8204c5208de7b0454affected
63cae47005af51c937f4cdcc4835f29075add2ba< 8dbae5affbdbf524b48000f9d357925bb001e5f4affected
63cae47005af51c937f4cdcc4835f29075add2ba< a3fc8051ee061e31db13e2fe011e8e0b71a7f815affected
63cae47005af51c937f4cdcc4835f29075add2ba< 90c4f73104016748533a5707ecd15930fbeff402affected
63cae47005af51c937f4cdcc4835f29075add2ba< 91784f3d77b73885e1b2e6b59d3cbf0de0a1126aaffected
63cae47005af51c937f4cdcc4835f29075add2ba< 11270e7ca268e8d61b5d9e5c3a54bd1550642c9caffected
… +10 more rows
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I. Basic Information for CVE-2022-49321

Vulnerability Information
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Vulnerability Title
xprtrdma: treat all calls not a bcall when bc_serv is NULL
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xprtrdma: treat all calls not a bcall when bc_serv is NULL When a rdma server returns a fault format reply, nfs v3 client may treats it as a bcall when bc service is not exist. The debug message at rpcrdma_bc_receive_call are, [56579.837169] RPC: rpcrdma_bc_receive_call: callback XID 00000001, length=20 [56579.837174] RPC: rpcrdma_bc_receive_call: 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 After that, rpcrdma_bc_receive_call will meets NULL pointer as, [ 226.057890] BUG: unable to handle kernel NULL pointer dereference at 00000000000000c8 ... [ 226.058704] RIP: 0010:_raw_spin_lock+0xc/0x20 ... [ 226.059732] Call Trace: [ 226.059878] rpcrdma_bc_receive_call+0x138/0x327 [rpcrdma] [ 226.060011] __ib_process_cq+0x89/0x170 [ib_core] [ 226.060092] ib_cq_poll_work+0x26/0x80 [ib_core] [ 226.060257] process_one_work+0x1a7/0x360 [ 226.060367] ? create_worker+0x1a0/0x1a0 [ 226.060440] worker_thread+0x30/0x390 [ 226.060500] ? create_worker+0x1a0/0x1a0 [ 226.060574] kthread+0x116/0x130 [ 226.060661] ? kthread_flush_work_fn+0x10/0x10 [ 226.060724] ret_from_fork+0x35/0x40 ...
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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xprtrdma在bc_serv为NULL时错误处理调用。
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 63cae47005af51c937f4cdcc4835f29075add2ba ~ 8e3943c50764dc7c5f25911970c3ff062ec1f18c -
LinuxLinux 4.4 -

II. Public POCs for CVE-2022-49321

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III. Intelligence Information for CVE-2022-49321

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Patches & Fixes for CVE-2022-49321 (8)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-494079.8 CRITICALdlm: fix plock invalid read
CVE-2022-492019.8 CRITICALibmvnic: fix race between xmit and reset
CVE-2022-491949.8 CRITICALnet: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-491499.8 CRITICALrxrpc: Fix call timer start racing with call destruction
CVE-2022-490939.8 CRITICALskbuff: fix coalescing for page_pool fragment recycling
CVE-2022-490949.8 CRITICALnet/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-493629.8 CRITICALNFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-493569.8 CRITICALSUNRPC: Trap RDMA segment overflows
CVE-2022-492609.8 CRITICALcrypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-494189.8 CRITICALNFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-495619.8 CRITICALnetfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-492809.8 CRITICALNFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-490589.1 CRITICALcifs: potential buffer overflow in handling symlinks
CVE-2022-494798.8 HIGHmt76: fix tx status related use-after-free race on station removal
CVE-2022-495198.8 HIGHath10k: skip ath10k_halt during suspend for driver state RESTARTING
CVE-2022-495008.8 HIGHwl1251: dynamically allocate memory used for DMA
CVE-2022-494708.8 HIGHBluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
CVE-2022-493288.8 HIGHmt76: fix use-after-free by removing a non-RCU wcid pointer
CVE-2022-491118.8 HIGHBluetooth: Fix use after free in hci_send_acl
CVE-2022-492388.8 HIGHath11k: free peer for station when disconnect from AP for QCA6390/WCN6855

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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