Answer in brief
CVE-2024-56584 records a Medium severity (CVSS 5.5) vulnerability in io_uring/tctx: work around xa_store() allocation error issue. 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 5.5. 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 | >=2b188cc1bb857a9d4701ae59aa7768b5124e262e <e05c070b401f6365c503e2b59f091331965c4fb9 || >=2b188cc1bb857a9d4701ae59aa7768b5124e262e <3a84fa784710990964c1e35df743851ab2863898 || >=2b188cc1bb857a9d4701ae59aa7768b5124e262e <94ad56f61b873ffeebcc620d451eacfbdf9d40f0 || >=2b188cc1bb857a9d4701ae59aa7768b5124e262e <42882b583095dcf747da6e3af1daeff40e27033e || >=2b188cc1bb857a9d4701ae59aa7768b5124e262e <d5b2ddf1f90c7248eff9630b95895c8950f2f36d || >=2b188cc1bb857a9d4701ae59aa7768b5124e262e <7eb75ce7527129d7f1fee6951566af409a37a1c4 | e05c070b401f6365c503e2b59f091331965c4fb9, 3a84fa784710990964c1e35df743851ab2863898, 94ad56f61b873ffeebcc620d451eacfbdf9d40f0, 42882b583095dcf747da6e3af1daeff40e27033e, d5b2ddf1f90c7248eff9630b95895c8950f2f36d, 7eb75ce7527129d7f1fee6951566af409a37a1c4 |
| Linux/Linuxgeneric | 5.1 | Not reported |
Published upstream
Dec 27, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: io_uring/tctx: work around xa_store() allocation error issue syzbot triggered the following WARN_ON: WARNING: CPU: 0 PID: 16 at io_uring/tctx.c:51 __io_uring_free+0xfa/0x140 io_uring/tctx.c:51 which is the WARN_ON_ONCE(!xa_empty(&tctx->xa)); sanity check in __io_uring_free() when a io_uring_task is going through its final put. The syzbot test case includes injecting memory allocation failures, and it very much looks like xa_store() can fail one of its memory allocations and end up with ->head being non-NULL even though no entries exist in the xarray. Until this issue gets sorted out, work around it by attempting to iterate entries in our xarray, and WARN_ON_ONCE() if one is found.
Quoted source text, attributed separately from HOL analysis.