CVE-2021-37576
HIGH
7.8
CVSS Score
Published: July 26, 2021 at 09:35 PM UTC
Updated: June 17, 2026 at 04:00 AM UTC
2 products affected across 2 vendorsLinux KernelFedora
Using N/A by N/A?
Get instant alerts when new vulnerabilities affect N/A - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 0.6%
Description
arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
3.10 ≤ v < 4.4.2774.10 ≤ v < 4.14.2414.15 ≤ v < 4.19.1994.20 ≤ v < 5.4.1364.5 ≤ v < 4.9.2775.11 ≤ v < 5.13.65.5 ≤ v < 5.10.54
Affected range stops below 4.14.241, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.199, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.277, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.277, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.54, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.13.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.136, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://www.openwall.com/lists/oss-security/2021/07/27/2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f62f3c20647ebd5fb6ecb8f0b477b9281c44c10a
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDFA7DSQIPM7XPNXJBXFWXHJFVUBCAG6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2YZ2DNURMYYVDT2NYAFDESJC35KCUDS/
- https://www.debian.org/security/2021/dsa-4978
References (7)
Mailing Listx_refsource_MLISTExploitPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/07/27/2x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f62f3c20647ebd5fb6ecb8f0b477b9281c44c10aVendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDFA7DSQIPM7XPNXJBXFWXHJFVUBCAG6/Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2YZ2DNURMYYVDT2NYAFDESJC35KCUDS/x_refsource_MISC
Source: [email protected]
https://lore.kernel.org/linuxppc-dev/87im0x1lqi.fsf%40mpe.ellerman.id.au/T/#ux_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210917-0005/Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4978CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card