Answer in brief
CVE-2022-49321 records a High severity (CVSS 7.5) vulnerability in xprtrdma: treat all calls not a bcall when bc_serv is NULL. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 4.4 | Not reported |
| Linux/Linuxgeneric | >=63cae47005af51c937f4cdcc4835f29075add2ba <8e3943c50764dc7c5f25911970c3ff062ec1f18c || >=63cae47005af51c937f4cdcc4835f29075add2ba <998d35a2aff4b81a1c784f3aa45cd3afff6814c1 || >=63cae47005af51c937f4cdcc4835f29075add2ba <da99331fa62131a38a0947a8204c5208de7b0454 || >=63cae47005af51c937f4cdcc4835f29075add2ba <8dbae5affbdbf524b48000f9d357925bb001e5f4 || >=63cae47005af51c937f4cdcc4835f29075add2ba <a3fc8051ee061e31db13e2fe011e8e0b71a7f815 || >=63cae47005af51c937f4cdcc4835f29075add2ba <90c4f73104016748533a5707ecd15930fbeff402 || >=63cae47005af51c937f4cdcc4835f29075add2ba <91784f3d77b73885e1b2e6b59d3cbf0de0a1126a || >=63cae47005af51c937f4cdcc4835f29075add2ba <11270e7ca268e8d61b5d9e5c3a54bd1550642c9c | 8e3943c50764dc7c5f25911970c3ff062ec1f18c, 998d35a2aff4b81a1c784f3aa45cd3afff6814c1, da99331fa62131a38a0947a8204c5208de7b0454, 8dbae5affbdbf524b48000f9d357925bb001e5f4, a3fc8051ee061e31db13e2fe011e8e0b71a7f815, 90c4f73104016748533a5707ecd15930fbeff402, 91784f3d77b73885e1b2e6b59d3cbf0de0a1126a, 11270e7ca268e8d61b5d9e5c3a54bd1550642c9c |
Published upstream
Feb 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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 ...
Quoted source text, attributed separately from HOL analysis.