Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2022-48940 | First vendor Publication | 2024-08-22 |
| Vendor | Cve | Last vendor Modification | 2024-08-22 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | |||
|---|---|---|---|
| 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 | None |
| 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: bpf: Fix crash due to incorrect copy_map_value When both bpf_spin_lock and bpf_timer are present in a BPF map value, copy_map_value needs to skirt both objects when copying a value into and out of the map. However, the current code does not set both s_off and t_off in copy_map_value, which leads to a crash when e.g. bpf_spin_lock is placed in map value with bpf_timer, as bpf_map_update_elem call will be able to overwrite the other timer object. When the issue is not fixed, an overwriting can produce the following splat: [root@(none) bpf]# ./test_progs -t timer_crash [ 15.930339] bpf_testmod: loading out-of-tree module taints kernel. [ 16.037849] ================================================================== [ 16.038458] BUG: KASAN: user-memory-access in __pv_queued_spin_lock_slowpath+0x32b/0x520 [ 16.038944] Write of size 8 at addr 0000000000043ec0 by task test_progs/325 [ 16.039399] [ 16.039514] CPU: 0 PID: 325 Comm: test_progs Tainted: G OE 5.16.0+ #278 [ 16.039983] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ArchLinux 1.15.0-1 04/01/2014 [ 16.040485] Call Trace: [ 16.040645] |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-48940 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-119 | Failure to Constrain Operations within the Bounds of a Memory Buffer |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2025-01-08 02:47:33 |
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| 2025-01-07 02:47:09 |
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| 2024-12-25 02:45:56 |
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| 2024-12-12 02:48:50 |
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| 2024-11-22 02:46:14 |
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| 2024-11-20 02:43:38 |
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| 2024-11-14 02:43:30 |
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| 2024-11-09 02:44:09 |
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| 2024-10-26 02:41:55 |
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| 2024-10-25 02:43:41 |
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| 2024-10-23 02:43:04 |
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| 2024-10-03 02:39:08 |
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| 2024-10-02 02:37:32 |
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| 2024-09-04 02:36:48 |
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| 2024-08-23 02:48:07 |
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| 2024-08-23 02:35:10 |
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| 2024-08-23 00:27:31 |
|
| 2024-08-22 17:27:24 |
|
| 2024-08-22 09:27:25 |
|
