CVE-2008-4934

Status: ModifiedHigh (7.8)—
The hfsplus_block_allocate function in fs/hfsplus/bitmap.c in the Linux kernel before 2.6.28-rc1 does not check a certain return value from the read_mapping_page function before calling kmap, which allows attackers to cause a denial of service (system crash) via a crafted hfsplus filesystem image.
CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Base score: 7.8
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 3.29%
Percentile among all scored CVEs: 88
Score date: 10/14/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (3)

Canonical — Ubuntu Linux Debian — Debian Linux Linux — Linux Kernel
CWEs

CWE-20
References

Raw JSON (NVD)

Show
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      "value": "The hfsplus_block_allocate function in fs/hfsplus/bitmap.c in the Linux kernel before 2.6.28-rc1 does not check a certain return value from the read_mapping_page function before calling kmap, which allows attackers to cause a denial of service (system crash) via a crafted hfsplus filesystem image."
    },
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      "value": "La función hfsplus_block_allocate en el archivo fs/hfsplus/bitmap.c en el kernel de Linux anterior a versión 2.6.28-rc1 no verifica cierto valor de retorno de la función read_mapping_page anterior al  llamar a kmap, lo que permite a los atacantes causar una denegación de servicio (bloqueo de sistema) por medio  de una imagen del sistema de archivos hfsplus."
    }
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  "lastModified": "2026-06-16T22:58:47.740",
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