CVE-2021-38160
In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE: the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- linux/linux kernel · netapp/hci bootstrap os · netapp/hci management node · netapp/solidfire · netapp/element software · debian/debian linux · redhat/enterprise linux
- Source
- cve@mitre.org
References
- https://access.redhat.com/security/cve/cve-2021-38160Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Release Notes, Vendor Advisory
- https://github.com/torvalds/linux/commit/d00d8da5869a2608e97cfede094dfc5e11462a46Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4978Third Party Advisory
- https://access.redhat.com/security/cve/cve-2021-38160Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Release Notes, Vendor Advisory
- https://github.com/torvalds/linux/commit/d00d8da5869a2608e97cfede094dfc5e11462a46Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4978Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.