CVE-2021-26932
Summary
| CVE | CVE-2021-26932 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-02-17 02:15:00 UTC |
| Updated | 2023-11-07 03:31:00 UTC |
| Description | An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then loops over the results, performing follow-up actions based on the success or failure of each operation. Unfortunately, when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively implying their success from the success of related batch elements. In other cases, errors resulting from one batch element lead to further batch elements not being inspected, and hence successful ones to not be possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are vulnerable. Linux backends run in HVM / PVH modes are not vulnerable. This affects arch/*/xen/p2m.c and drivers/xen/gntdev.c. |
Risk And Classification
Problem Types: NVD-CWE-noinfo
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Debian | Debian Linux | 9.0 | All | All | All |
| Operating System | Fedoraproject | Fedora | 32 | All | All | All |
| Operating System | Fedoraproject | Fedora | 33 | All | All | All |
| Operating System | Fedoraproject | Fedora | 32 | All | All | All |
| Operating System | Fedoraproject | Fedora | 33 | All | All | All |
| Operating System | Linux | Linux Kernel | All | All | All | All |
| Application | Netapp | Cloud Backup | - | All | All | All |
| Operating System | Netapp | Hci Compute Node | - | All | All | All |
| Hardware | Netapp | Hci H410c | - | All | All | All |
| Operating System | Netapp | Hci H410c Firmware | - | All | All | All |
| Application | Netapp | Solidfire Enterprise Sds Hci Storage Node | - | All | All | All |
| Application | Netapp | Solidfire Hci Management Node | - | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [SECURITY] Fedora 33 Update: kernel-5.10.18-200.fc33 - package-announce - Fedora Mailing-Lists | lists.fedoraproject.org | ||
| [SECURITY] [DLA 2586-1] linux security update | MLIST | lists.debian.org | |
| XSA-361 - Xen Security Advisories | MISC | xenbits.xen.org | Patch, Third Party Advisory |
| [SECURITY] [DLA 2610-1] linux-4.19 security update | MLIST | lists.debian.org | |
| February 2021 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security | CONFIRM | security.netapp.com | |
| [SECURITY] Fedora 32 Update: kernel-5.10.18-100.fc32 - package-announce - Fedora Mailing-Lists | FEDORA | lists.fedoraproject.org | Mailing List, Patch, Third Party Advisory |
| [SECURITY] Fedora 32 Update: kernel-5.10.18-100.fc32 - package-announce - Fedora Mailing-Lists | lists.fedoraproject.org | ||
| [SECURITY] Fedora 33 Update: kernel-5.10.18-200.fc33 - package-announce - Fedora Mailing-Lists | FEDORA | lists.fedoraproject.org | Mailing List, Patch, Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 159132 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9135)
- 159133 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9136)
- 174764 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0738-1)
- 174768 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0735-1)
- 174770 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0741-1)
- 174772 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0737-1)
- 174774 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0740-1)
- 174897 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1175-1)
- 174916 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1210-1)
- 178507 Debian Security Update for linux-4.19 (DLA 2610-1)
- 180024 Debian Security Update for linux (CVE-2021-26932)
- 352244 Amazon Linux Security Advisory for kernel: ALAS-2021-1487
- 352254 Amazon Linux Security Advisory for kernel: ALAS2-2021-1616
- 353100 Amazon Linux Security Advisory for kernel : ALAC2012-2021-024
- 353101 Amazon Linux Security Advisory for kmod-mlx5 : ALAC2012-2021-025
- 353102 Amazon Linux Security Advisory for kmod-sfc : ALAC2012-2021-026
- 353150 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-001
- 375405 FreeBSD Security Update for FreeBSD (5b8c6e1e-770f-11eb-b87a-901b0ef719ab)
- 379053 Citrix XenServer Security Updates (CTX296603)
- 6140130 AWS Bottlerocket Security Update for kernel (GHSA-xgcp-q5f9-v447)
- 671474 EulerOS Security Update for kernel (EulerOS-SA-2022-1429)
- 750324 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0393-1)
- 900098 CBL-Mariner Linux Security Update for kernel 5.4.91
- 903636 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3901)
- 906191 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3901-1)