fkie_cve-2021-28691
Vulnerability from fkie_nvd
Published
2021-06-29 12:15
Modified
2024-11-21 06:00
Severity ?
Summary
Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.
References
| ▼ | URL | Tags | |
|---|---|---|---|
| security@xen.org | https://security.gentoo.org/glsa/202107-30 | Third Party Advisory | |
| security@xen.org | https://security.netapp.com/advisory/ntap-20210805-0002/ | Third Party Advisory | |
| security@xen.org | https://xenbits.xenproject.org/xsa/advisory-374.txt | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.gentoo.org/glsa/202107-30 | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://security.netapp.com/advisory/ntap-20210805-0002/ | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://xenbits.xenproject.org/xsa/advisory-374.txt | Third Party Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| netapp | cloud_backup | - | |
| netapp | h410c_firmware | - | |
| netapp | h410c | - | |
| netapp | h300s_firmware | - | |
| netapp | h300s | - | |
| netapp | h500s_firmware | - | |
| netapp | h500s | - | |
| netapp | h700s_firmware | - | |
| netapp | h700s | - | |
| netapp | h300e_firmware | - | |
| netapp | h300e | - | |
| netapp | h500e_firmware | - | |
| netapp | h500e | - | |
| netapp | h700e_firmware | - | |
| netapp | h700e | - | |
| netapp | h410s_firmware | - | |
| netapp | h410s | - |
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"value": "Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer."
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"id": "CVE-2021-28691",
"lastModified": "2024-11-21T06:00:09.150",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.