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CVE-2021-47296
KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
High7.8EPSS 0.24%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak vcpu_put is not called if the user copy fails. This can result in preempt notifier corruption and crashes, among other issues.
Timeline
ID reserved
By Linux
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected b3cebfe8c1cadf1817939dcc3688a2504a69c662 – < 9bafc34dc4ad0cef18727c557f21ed3c3304df50
- affected b3cebfe8c1cadf1817939dcc3688a2504a69c662 – < f38527f1890543cdfca8dfd06f75f9887cce6151
- affected b3cebfe8c1cadf1817939dcc3688a2504a69c662 – < e14ef1095387f764d95614d3ec9e4d07c82a3533
- affected b3cebfe8c1cadf1817939dcc3688a2504a69c662 – < a4a488915feaad38345cc01b80d52e8200ff5209
- affected b3cebfe8c1cadf1817939dcc3688a2504a69c662 – < bc4188a2f56e821ea057aca6bf444e138d06c252
- affected 4.18
- unaffected < 4.18
- unaffected 4.19.199 – ≤ 4.19.*
- unaffected 5.4.136 – ≤ 5.4.*
- unaffected 5.10.54 – ≤ 5.10.*
- unaffected 5.13.6 – ≤ 5.13.*
- unaffected 5.14 – ≤ *
References (5)
- https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-47296)Record last updated .