Overview
- Description
- In the Linux kernel, the following vulnerability has been resolved: riscv: fix race when vmap stack overflow Currently, when detecting vmap stack overflow, riscv firstly switches to the so called shadow stack, then use this shadow stack to call the get_overflow_stack() to get the overflow stack. However, there's a race here if two or more harts use the same shadow stack at the same time. To solve this race, we introduce spin_shadow_stack atomic var, which will be swap between its own address and 0 in atomic way, when the var is set, it means the shadow_stack is being used; when the var is cleared, it means the shadow_stack isn't being used. [Palmer: Add AQ to the swap, and also some comments.]
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7
- Impact score
- 5.9
- Exploitability score
- 1
- Vector string
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
Weaknesses
- nvd@nist.gov
- CWE-362
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6B49AE96-FD69-40D4-A29C-DC4DB7DE3CDB",
"versionEndExcluding": "5.15.82",
"versionStartIncluding": "5.14"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D6D56E90-F3EE-413D-B3E2-B518932F0C7D",
"versionEndExcluding": "6.0.12",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8"
}
],
"operator": "OR"
}
]
}
]