cve-2021-47124
Vulnerability from cvelistv5
Published
2024-03-15 20:14
Modified
2024-11-04 11:59
Severity ?
EPSS score ?
Summary
io_uring: fix link timeout refs
References
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix link timeout refs\n\nWARNING: CPU: 0 PID: 10242 at lib/refcount.c:28 refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28\nRIP: 0010:refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28\nCall Trace:\n __refcount_sub_and_test include/linux/refcount.h:283 [inline]\n __refcount_dec_and_test include/linux/refcount.h:315 [inline]\n refcount_dec_and_test include/linux/refcount.h:333 [inline]\n io_put_req fs/io_uring.c:2140 [inline]\n io_queue_linked_timeout fs/io_uring.c:6300 [inline]\n __io_queue_sqe+0xbef/0xec0 fs/io_uring.c:6354\n io_submit_sqe fs/io_uring.c:6534 [inline]\n io_submit_sqes+0x2bbd/0x7c50 fs/io_uring.c:6660\n __do_sys_io_uring_enter fs/io_uring.c:9240 [inline]\n __se_sys_io_uring_enter+0x256/0x1d60 fs/io_uring.c:9182\n\nio_link_timeout_fn() should put only one reference of the linked timeout\nrequest, however in case of racing with the master request\u0027s completion\nfirst io_req_complete() puts one and then io_put_req_deferred() is\ncalled."
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"nvd": "{\"cve\":{\"id\":\"CVE-2021-47124\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-15T21:15:07.260\",\"lastModified\":\"2024-03-17T22:38:29.433\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nio_uring: fix link timeout refs\\n\\nWARNING: CPU: 0 PID: 10242 at lib/refcount.c:28 refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28\\nRIP: 0010:refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28\\nCall Trace:\\n __refcount_sub_and_test include/linux/refcount.h:283 [inline]\\n __refcount_dec_and_test include/linux/refcount.h:315 [inline]\\n refcount_dec_and_test include/linux/refcount.h:333 [inline]\\n io_put_req fs/io_uring.c:2140 [inline]\\n io_queue_linked_timeout fs/io_uring.c:6300 [inline]\\n __io_queue_sqe+0xbef/0xec0 fs/io_uring.c:6354\\n io_submit_sqe fs/io_uring.c:6534 [inline]\\n io_submit_sqes+0x2bbd/0x7c50 fs/io_uring.c:6660\\n __do_sys_io_uring_enter fs/io_uring.c:9240 [inline]\\n __se_sys_io_uring_enter+0x256/0x1d60 fs/io_uring.c:9182\\n\\nio_link_timeout_fn() should put only one reference of the linked timeout\\nrequest, however in case of racing with the master request\u0027s completion\\nfirst io_req_complete() puts one and then io_put_req_deferred() is\\ncalled.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring: corrige las referencias de tiempo de espera del enlace ADVERTENCIA: CPU: 0 PID: 10242 en lib/refcount.c:28 refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28 RIP: 0010: refcount_warn_saturate+0x15b/0x1a0 lib/refcount.c:28 Seguimiento de llamadas: __refcount_sub_and_test include/linux/refcount.h:283 [en l\u00ednea] __refcount_dec_and_test include/linux/refcount.h:315 [en l\u00ednea] refcount_dec_and_test include/linux/refcount.h: 333 [en l\u00ednea] io_put_req fs/io_uring.c:2140 [en l\u00ednea] io_queue_linked_timeout fs/io_uring.c:6300 [en l\u00ednea] __io_queue_sqe+0xbef/0xec0 fs/io_uring.c:6354 io_submit_sqe fs/io_uring.c:6534 [en l\u00ednea] io_submit _sqes +0x2bbd/0x7c50 fs/io_uring.c:6660 __do_sys_io_uring_enter fs/io_uring.c:9240 [en l\u00ednea] __se_sys_io_uring_enter+0x256/0x1d60 fs/io_uring.c:9182 io_link_timeout_fn() debe poner solo una referencia de la solicitud de tiempo de espera vinculada, sin embargo en En el caso de competir con la finalizaci\u00f3n de la solicitud maestra, primero io_req_complete() coloca uno y luego se llama a io_put_req_deferred().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b2a990e5d2f76d020cb840c456e6ec5f0c27530\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6f5d7a45f58d3abe3a936de1441b8d6318f978ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/876808dba2ff7509bdd7f230c4f374a0caf4f410\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a298232ee6b9a1d5d732aa497ff8be0d45b5bd82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ff4a96ba5c8f9b266706280ff8021d2ef3f17e86\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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