Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2024-50279 | First vendor Publication | 2024-11-19 |
| Vendor | Cve | Last vendor Modification | 2024-11-27 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.1 | ||
| Base Score | 7.1 | Environmental Score | 7.1 |
| impact SubScore | 5.2 | Temporal Score | 7.1 |
| Exploitabality Sub Score | 1.8 | ||
| Attack Vector | Local | Attack Complexity | Low |
| Privileges Required | Low | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | None | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : | |||
|---|---|---|---|
| Cvss Base Score | N/A | Attack Range | N/A |
| Cvss Impact Score | N/A | Attack Complexity | N/A |
| Cvss Expoit Score | N/A | Authentication | N/A |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| In the Linux kernel, the following vulnerability has been resolved: dm cache: fix out-of-bounds access to the dirty bitset when resizing dm-cache checks the dirty bits of the cache blocks to be dropped when shrinking the fast device, but an index bug in bitset iteration causes out-of-bounds access. Reproduce steps: 1. create a cache device of 1024 cache blocks (128 bytes dirty bitset) dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 131072 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" 2. shrink the fast device to 512 cache blocks, triggering out-of-bounds dmsetup suspend cache dmsetup reload cdata --table "0 65536 linear /dev/sdc 8192" dmsetup resume cdata dmsetup resume cache KASAN reports: BUG: KASAN: vmalloc-out-of-bounds in cache_preresume+0x269/0x7b0 (...snip...) (...snip...) Fix by making the index post-incremented. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50279 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-125 | Out-of-bounds Read |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2025-03-29 03:43:05 |
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| 2025-03-28 13:46:48 |
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| 2025-03-28 03:20:49 |
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| 2025-03-19 03:15:58 |
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| 2025-03-18 03:28:57 |
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| 2025-03-14 03:16:09 |
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| 2025-03-06 14:12:42 |
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| 2025-02-22 03:26:15 |
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| 2025-01-08 03:07:10 |
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| 2025-01-07 03:06:43 |
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| 2024-12-25 03:05:20 |
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| 2024-12-12 03:08:15 |
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| 2024-11-27 21:23:10 |
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| 2024-11-20 03:02:01 |
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| 2024-11-20 03:01:14 |
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| 2024-11-20 00:20:28 |
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| 2024-11-19 09:20:29 |
|
