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Linux kernel
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Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Tags
CVE-2024-42230 details
Last Modified : July 30, 2024, 7:32 p.m.
Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Fix scv instruction crash with kexec kexec on pseries disables AIL (reloc_on_exc), required for scv instruction support, before other CPUs have been shut down. This means they can execute scv instructions after AIL is disabled, which causes an interrupt at an unexpected entry location that crashes the kernel. Change the kexec sequence to disable AIL after other CPUs have been brought down. As a refresher, the real-mode scv interrupt vector is 0x17000, and the fixed-location head code probably couldn't easily deal with implementing such high addresses so it was just decided not to support that interrupt at all.
CVSS Score
| 1 | 2 | 3 | 4.4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|
CVSS Data
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Base Score
4.4
Exploitability Score
0.8
Impact Score
3.6
Base Severity
MEDIUM
Vector String : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
References
| URL | Source |
|---|---|
| https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
| https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
| https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
| https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
CPEs
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| o | linux | linux_kernel | / | / | / | / | / | / | / | / |
| o | linux | linux_kernel | / | / | / | / | / | / | / | / |
| o | linux | linux_kernel | / | / | / | / | / | / | / | / |
| o | linux | linux_kernel | 6.10 | rc1 | / | / | / | / | / | / |
| o | linux | linux_kernel | 6.10 | rc2 | / | / | / | / | / | / |
| o | linux | linux_kernel | 6.10 | rc3 | / | / | / | / | / | / |
| o | linux | linux_kernel | 6.10 | rc4 | / | / | / | / | / | / |
| o | linux | linux_kernel | 6.10 | rc5 | / | / | / | / | / | / |
| o | linux | linux_kernel | 6.10 | rc6 | / | / | / | / | / | / |