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https://github.com/fkie-cad/nvd-json-data-feeds.git
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29 lines
2.5 KiB
JSON
29 lines
2.5 KiB
JSON
{
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"id": "CVE-2023-53768",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2025-12-08T02:15:52.797",
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"lastModified": "2025-12-08T18:26:19.900",
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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\nregmap-irq: Fix out-of-bounds access when allocating config buffers\n\nWhen allocating the 2D array for handling IRQ type registers in\nregmap_add_irq_chip_fwnode(), the intent is to allocate a matrix\nwith num_config_bases rows and num_config_regs columns.\n\nThis is currently handled by allocating a buffer to hold a pointer for\neach row (i.e. num_config_bases). After that, the logic attempts to\nallocate the memory required to hold the register configuration for\neach row. However, instead of doing this allocation for each row\n(i.e. num_config_bases allocations), the logic erroneously does this\nallocation num_config_regs number of times.\n\nThis scenario can lead to out-of-bounds accesses when num_config_regs\nis greater than num_config_bases. Fix this by updating the terminating\ncondition of the loop that allocates the memory for holding the register\nconfiguration to allocate memory only for each row in the matrix.\n\nAmit Pundir reported a crash that was occurring on his db845c device\ndue to memory corruption (see \"Closes\" tag for Amit's report). The KASAN\nreport below helped narrow it down to this issue:\n\n[ 14.033877][ T1] ==================================================================\n[ 14.042507][ T1] BUG: KASAN: invalid-access in regmap_add_irq_chip_fwnode+0x594/0x1364\n[ 14.050796][ T1] Write of size 8 at addr 06ffff8081021850 by task init/1\n\n[ 14.242004][ T1] The buggy address belongs to the object at ffffff8081021850\n[ 14.242004][ T1] which belongs to the cache kmalloc-8 of size 8\n[ 14.255669][ T1] The buggy address is located 0 bytes inside of\n[ 14.255669][ T1] 8-byte region [ffffff8081021850, ffffff8081021858)"
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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/6e7b2337ecd028bd888a1a0be4115b8a88faf838",
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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/963b54df82b6d6206d7def273390bf3f7af558e1",
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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/b1a726ad33e585e3d9fa70712df31ae105e4532c",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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} |