CVE-2020-27784
published 2022-09-01CVE-2020-27784: A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
13.1th percentile
A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.9.6-1 (bookworm) | linux 5.9.6-1 (bookworm) |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 4.1 < 4.4.241 | 4.4.241 |
| linux | linux_kernel | >= 4.10 < 4.19.154 | 4.19.154 |
| linux | linux_kernel | >= 4.20 < 5.4.73 | 5.4.73 |
| linux | linux_kernel | >= 4.5 < 4.9.241 | 4.9.241 |
| linux | linux_kernel | >= 5.5 < 5.8.17 | 5.8.17 |
| linux | linux_kernel | >= 5.9.0 < 5.9.2 | 5.9.2 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-wmh9-52hx-xj2c: A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_
ghsa_unreviewed·2022-09-02
CVE-2020-27784 [MEDIUM] CWE-201 GHSA-wmh9-52hx-xj2c: A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_
A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().
OSV
CVE-2020-27784: A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_
osv·2022-09-01·CVSS 5.5
CVE-2020-27784 [MEDIUM] CVE-2020-27784: A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_
A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().
Red Hat
kernel: deallocated instance in printer_ioctl() printer_ioctl() tries to access lock_printer_io of the printer_dev instance
vendor_redhat·2020-06-05·CVSS 5.5
CVE-2020-27784 [MEDIUM] CWE-201 kernel: deallocated instance in printer_ioctl() printer_ioctl() tries to access lock_printer_io of the printer_dev instance
kernel: deallocated instance in printer_ioctl() printer_ioctl() tries to access lock_printer_io of the printer_dev instance
A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().
A flaw was found in the Linux kernel. This flaw allows a local user with permission to access a printer port and issue an ioctl, creating a use-after-free and corrupting memory or escalating privileges.
Package: kernel (Red Hat Enterprise Linux 5) - Out of support scope
Package: kernel (Red Hat Enterprise Linux 6) - Out of support scope
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-alt (Red Hat E
Debian
CVE-2020-27784: linux - A vulnerability was found in the Linux kernel, where accessing a deallocated ins...
vendor_debian·2020·CVSS 5.5
CVE-2020-27784 [MEDIUM] CVE-2020-27784: linux - A vulnerability was found in the Linux kernel, where accessing a deallocated ins...
A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().
Scope: local
bookworm: resolved (fixed in 5.9.6-1)
bullseye: resolved (fixed in 5.9.6-1)
forky: resolved (fixed in 5.9.6-1)
sid: resolved (fixed in 5.9.6-1)
trixie: resolved (fixed in 5.9.6-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2022-09-01
Published