fkie_cve-2024-57839
Vulnerability from fkie_nvd
Published
2025-01-11 15:15
Modified
2025-10-17 15:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
Revert "readahead: properly shorten readahead when falling back to do_page_cache_ra()"
This reverts commit 7c877586da3178974a8a94577b6045a48377ff25.
Anders and Philippe have reported that recent kernels occasionally hang
when used with NFS in readahead code. The problem has been bisected to
7c877586da3 ("readahead: properly shorten readahead when falling back to
do_page_cache_ra()"). The cause of the problem is that ra->size can be
shrunk by read_pages() call and subsequently we end up calling
do_page_cache_ra() with negative (read huge positive) number of pages.
Let's revert 7c877586da3 for now until we can find a proper way how the
logic in read_pages() and page_cache_ra_order() can coexist. This can
lead to reduced readahead throughput due to readahead window confusion but
that's better than outright hangs.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.13 |
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"readahead: properly shorten readahead when falling back to do_page_cache_ra()\"\n\nThis reverts commit 7c877586da3178974a8a94577b6045a48377ff25.\n\nAnders and Philippe have reported that recent kernels occasionally hang\nwhen used with NFS in readahead code. The problem has been bisected to\n7c877586da3 (\"readahead: properly shorten readahead when falling back to\ndo_page_cache_ra()\"). The cause of the problem is that ra-\u003esize can be\nshrunk by read_pages() call and subsequently we end up calling\ndo_page_cache_ra() with negative (read huge positive) number of pages. \nLet\u0027s revert 7c877586da3 for now until we can find a proper way how the\nlogic in read_pages() and page_cache_ra_order() can coexist. This can\nlead to reduced readahead throughput due to readahead window confusion but\nthat\u0027s better than outright hangs."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Revertir \"readahead: acortar correctamente el readahead al volver a do_page_cache_ra()\" Esto revierte el commit 7c877586da3178974a8a94577b6045a48377ff25. Anders y Philippe han informado de que los kernels recientes a veces se bloquean cuando se utilizan con NFS en el c\u00f3digo readahead. El problema se ha dividido en 7c877586da3 (\"readahead: acortar correctamente el readahead al volver a do_page_cache_ra()\"). La causa del problema es que ra-\u0026gt;size se puede reducir mediante la llamada read_pages() y, posteriormente, terminamos llamando a do_page_cache_ra() con un n\u00famero de p\u00e1ginas negativo (leer positivo enorme). Revertiremos 7c877586da3 por ahora hasta que podamos encontrar una forma adecuada de que la l\u00f3gica en read_pages() y page_cache_ra_order() pueda coexistir. Esto puede provocar una reducci\u00f3n del rendimiento de lectura anticipada debido a la confusi\u00f3n de la ventana de lectura anticipada, pero es mejor que los bloqueos directos."
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"id": "CVE-2024-57839",
"lastModified": "2025-10-17T15:26:12.860",
"metrics": {
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"exploitabilityScore": 1.8,
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"source": "nvd@nist.gov",
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"published": "2025-01-11T15:15:07.050",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"url": "https://git.kernel.org/stable/c/85351e4941a253e4c50fb7048bfc19b60b4ec44b"
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"value": "CWE-704"
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"source": "nvd@nist.gov",
"type": "Primary"
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]
}
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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