CVE-2022-49710 (GCVE-0-2022-49710)
Vulnerability from cvelistv5
Published
2025-02-26 02:24
Modified
2025-05-04 08:43
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
dm mirror log: round up region bitmap size to BITS_PER_LONG
The code in dm-log rounds up bitset_size to 32 bits. It then uses
find_next_zero_bit_le on the allocated region. find_next_zero_bit_le
accesses the bitmap using unsigned long pointers. So, on 64-bit
architectures, it may access 4 bytes beyond the allocated size.
Fix this bug by rounding up bitset_size to BITS_PER_LONG.
This bug was found by running the lvm2 testsuite with kasan.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 29121bd0b00ebb9524971a583fea4a2f7afe8041 Version: 29121bd0b00ebb9524971a583fea4a2f7afe8041 Version: 29121bd0b00ebb9524971a583fea4a2f7afe8041 Version: 29121bd0b00ebb9524971a583fea4a2f7afe8041 Version: 29121bd0b00ebb9524971a583fea4a2f7afe8041 |
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|
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"versions": [
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm mirror log: round up region bitmap size to BITS_PER_LONG\n\nThe code in dm-log rounds up bitset_size to 32 bits. It then uses\nfind_next_zero_bit_le on the allocated region. find_next_zero_bit_le\naccesses the bitmap using unsigned long pointers. So, on 64-bit\narchitectures, it may access 4 bytes beyond the allocated size.\n\nFix this bug by rounding up bitset_size to BITS_PER_LONG.\n\nThis bug was found by running the lvm2 testsuite with kasan."
}
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"datePublished": "2025-02-26T02:24:27.532Z",
"dateReserved": "2025-02-26T02:21:30.444Z",
"dateUpdated": "2025-05-04T08:43:50.278Z",
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