mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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33 lines
2.9 KiB
JSON
33 lines
2.9 KiB
JSON
{
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"id": "CVE-2024-26785",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-04-04T09:15:08.187",
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"lastModified": "2024-10-10T12:15:03.027",
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"vulnStatus": "Awaiting Analysis",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix protection fault in iommufd_test_syz_conv_iova\n\nSyzkaller reported the following bug:\n\n general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN\n KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]\n Call Trace:\n lock_acquire\n lock_acquire+0x1ce/0x4f0\n down_read+0x93/0x4a0\n iommufd_test_syz_conv_iova+0x56/0x1f0\n iommufd_test_access_rw.isra.0+0x2ec/0x390\n iommufd_test+0x1058/0x1e30\n iommufd_fops_ioctl+0x381/0x510\n vfs_ioctl\n __do_sys_ioctl\n __se_sys_ioctl\n __x64_sys_ioctl+0x170/0x1e0\n do_syscall_x64\n do_syscall_64+0x71/0x140\n\nThis is because the new iommufd_access_change_ioas() sets access->ioas to\nNULL during its process, so the lock might be gone in a concurrent racing\ncontext.\n\nFix this by doing the same access->ioas sanity as iommufd_access_rw() and\niommufd_access_pin_pages() functions do."
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: iommufd: Se corrigi\u00f3 falla de protecci\u00f3n en iommufd_test_syz_conv_iova Syzkaller inform\u00f3 el siguiente error: falla de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0xdffffc0000000038: 0000 [#1] SMP KASAN KASAN: null-ptr- deref en el rango [0x00000000000001c0-0x00000000000001c7] Seguimiento de llamadas: lock_acquire lock_acquire+0x1ce/0x4f0 down_read+0x93/0x4a0 iommufd_test_syz_conv_iova+0x56/0x1f0 iommufd_test_access_rw.isra. 0+0x2ec/0x390 iommufd_test+0x1058/0x1e30 iommufd_fops_ioctl+0x381/0x510 vfs_ioctl __do_sys_ioctl __se_sys_ioctl __x64_sys_ioctl +0x170/0x1e0 do_syscall_x64 do_syscall_64+0x71/0x140 Esto se debe a que el nuevo iommufd_access_change_ioas() establece access->ioas en NULL durante su proceso, por lo que el bloqueo podr\u00eda desaparecer en un contexto de ejecuci\u00f3n concurrente. Solucione este problema haciendo el mismo acceso->ioas cordura que hacen las funciones iommufd_access_rw() y iommufd_access_pin_pages()."
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/cf7c2789822db8b5efa34f5ebcf1621bc0008d48",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/fc719ecbca45c9c046640d72baddba3d83e0bc0b",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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} |