CVE-2020-28097
published 2021-06-24CVE-2020-28097: The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.
PriorityP424medium5.9CVSS 3.1
AVPACLPRLUINSUCHINAH
EPSS
0.52%
41.2th percentile
The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.8.10-1 (bookworm) | linux 5.8.10-1 (bookworm) |
| linux | linux_kernel | < 5.8.10 | 5.8.10 |
| linux | linux_kernel | >= 0 < 5.8.10-1 | 5.8.10-1 |
| linux | linux_kernel | >= 0 < 5.8.10-1 | 5.8.10-1 |
| linux | linux_kernel | >= 0 < 5.8.10-1 | 5.8.10-1 |
| linux | linux_kernel | >= 0 < 5.8.10-1 | 5.8.10-1 |
CVSS provenance
nvdv3.15.9MEDIUMCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
nvdv2.03.6LOWAV:L/AC:L/Au:N/C:P/I:N/A:P
osv5.9MEDIUM
vendor_debian5.9MEDIUM
vendor_redhat5.9MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-x5h6-wmmc-r9x2: The vgacon subsystem in the Linux kernel before 5
ghsa_unreviewed·2022-05-24
CVE-2020-28097 [HIGH] CWE-125 GHSA-x5h6-wmmc-r9x2: The vgacon subsystem in the Linux kernel before 5
The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.
OSV
CVE-2020-28097: The vgacon subsystem in the Linux kernel before 5
osv·2021-06-24·CVSS 5.9
CVE-2020-28097 [MEDIUM] CVE-2020-28097: The vgacon subsystem in the Linux kernel before 5
The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.
Red Hat
kernel: out-of-bounds read/write in vgacon_scrolldelta function
vendor_redhat·2020-09-16·CVSS 5.9
CVE-2020-28097 [MEDIUM] CWE-125 kernel: out-of-bounds read/write in vgacon_scrolldelta function
kernel: out-of-bounds read/write in vgacon_scrolldelta function
The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.
A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles. When a local attacker attempts to scroll the console, calling an ioctl TIOCL_SCROLLCONSOLE, an out-of-bounds memory access issue occurs. This flaw allows a local user with access to the VGA console to crash the system, potentially reading random out-of-bound memory on the system. The highest threat from this vulnerability is to system availability and data confidentiality.
Statement: This flaw is rated as a having Moderate impact, because only local user with access to VGA
Debian
CVE-2020-28097: linux - The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrol...
vendor_debian·2020·CVSS 5.9
CVE-2020-28097 [MEDIUM] CVE-2020-28097: linux - The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrol...
The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.
Scope: local
bookworm: resolved (fixed in 5.8.10-1)
bullseye: resolved (fixed in 5.8.10-1)
forky: resolved (fixed in 5.8.10-1)
sid: resolved (fixed in 5.8.10-1)
trixie: resolved (fixed in 5.8.10-1)
No detection rules found.
No public exploits indexed.
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.10https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=973c096f6a85e5b5f2a295126ba6928d9a6afd45https://github.com/torvalds/linux/commit/973c096f6a85e5b5f2a295126ba6928d9a6afd45https://seclists.org/oss-sec/2020/q3/176https://security.netapp.com/advisory/ntap-20210805-0001/https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.10https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=973c096f6a85e5b5f2a295126ba6928d9a6afd45https://github.com/torvalds/linux/commit/973c096f6a85e5b5f2a295126ba6928d9a6afd45https://seclists.org/oss-sec/2020/q3/176https://security.netapp.com/advisory/ntap-20210805-0001/
2021-06-24
Published