fkie_cve-2024-56584
Vulnerability from fkie_nvd
Published
2024-12-27 15:15
Modified
2025-10-07 17:21
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/tctx: work around xa_store() allocation error issue\n\nsyzbot triggered the following WARN_ON:\n\nWARNING: CPU: 0 PID: 16 at io_uring/tctx.c:51 __io_uring_free+0xfa/0x140 io_uring/tctx.c:51\n\nwhich is the\n\nWARN_ON_ONCE(!xa_empty(\u0026tctx-\u003exa));\n\nsanity check in __io_uring_free() when a io_uring_task is going through\nits final put. The syzbot test case includes injecting memory allocation\nfailures, and it very much looks like xa_store() can fail one of its\nmemory allocations and end up with -\u003ehead being non-NULL even though no\nentries exist in the xarray.\n\nUntil this issue gets sorted out, work around it by attempting to\niterate entries in our xarray, and WARN_ON_ONCE() if one is found."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring/tctx: workaround al problema de error de asignaci\u00f3n de xa_store() syzbot activ\u00f3 el siguiente WARN_ON: WARNING: CPU: 0 PID: 16 en io_uring/tctx.c:51 __io_uring_free+0xfa/0x140 io_uring/tctx.c:51 que es la comprobaci\u00f3n de cordura WARN_ON_ONCE(!xa_empty(\u0026amp;tctx-\u0026gt;xa)); en __io_uring_free() cuando una io_uring_task est\u00e1 pasando por su put final. El caso de prueba de syzbot incluye la inyecci\u00f3n de fallos de asignaci\u00f3n de memoria, y parece que xa_store() puede fallar en una de sus asignaciones de memoria y terminar con -\u0026gt;head siendo distinto de NULL aunque no existan entradas en la matriz x. Hasta que se resuelva este problema, puede solucionarlo intentando iterar las entradas en nuestra matriz x y usar WARN_ON_ONCE() si encuentra alguna."
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"id": "CVE-2024-56584",
"lastModified": "2025-10-07T17:21:40.583",
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"scope": "UNCHANGED",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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