Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2023-23586 | First vendor Publication | 2023-02-17 |
| Vendor | Cve | Last vendor Modification | 2023-11-07 |
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:N | |||
|---|---|---|---|
| Overall CVSS Score | 5.5 | ||
| Base Score | 5.5 | Environmental Score | 5.5 |
| impact SubScore | 3.6 | Temporal Score | 5.5 |
| 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 | None |
| 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
| Due to a vulnerability in the io_uring subsystem, it is possible to leak kernel memory information to the user process. timens_install calls current_is_single_threaded to determine if the current process is single-threaded, but this call does not consider io_uring's io_worker threads, thus it is possible to insert a time namespace's vvar page to process's memory space via a page fault. When this time namespace is destroyed, the vvar page is also freed, but not removed from the process' memory, and a next page allocated by the kernel will be still available from the user-space process and can leak memory contents via this (read-only) use-after-free vulnerability. We recommend upgrading past version 5.10.161 or commit 788d0824269bef539fe31a785b1517882eafed93 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23586 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-416 | Use After Free |
CPE : Common Platform Enumeration
Sources (Detail)
| Source | Url |
|---|---|
| MISC | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_ur... https://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93 |
Alert History
| Date | Informations |
|---|---|
| 2024-03-12 13:34:41 |
|
| 2024-02-02 02:43:08 |
|
| 2024-02-01 12:29:23 |
|
| 2023-12-29 02:32:39 |
|
| 2023-11-22 02:31:55 |
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| 2023-11-07 21:30:08 |
|
| 2023-09-29 13:26:12 |
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| 2023-09-05 13:38:46 |
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| 2023-09-05 01:28:38 |
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| 2023-09-02 13:36:57 |
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| 2023-09-02 01:29:07 |
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| 2023-08-12 13:42:30 |
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| 2023-08-12 01:28:22 |
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| 2023-08-11 13:33:38 |
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| 2023-08-11 01:29:13 |
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| 2023-08-06 13:31:01 |
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| 2023-08-06 01:28:00 |
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| 2023-08-04 13:31:29 |
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| 2023-08-04 01:28:23 |
|
| 2023-07-14 13:31:19 |
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| 2023-07-14 01:28:01 |
|
| 2023-06-06 13:20:10 |
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| 2023-04-13 02:16:56 |
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| 2023-03-29 02:30:04 |
|
| 2023-03-28 12:27:49 |
|
| 2023-02-28 00:27:15 |
|
| 2023-02-17 17:27:13 |
|
