kernel: deallocated instance in printer_ioctl() printer_ioctl() tries to access lock_printer_io of the printer_dev instance
Published Sep 1, 2022
5.5
MEDIUMCVSS 3.1
EPSS 0.23%
Description
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 products
- Vendor n/a Product Kernel Defaultunknown
Affected
- unknown
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| n/a | Kernel | unknown | Affected
|
- ≥ 4.1 · < 4.4.241
- ≥ 4.5 · < 4.9.241
- ≥ 4.10 · < 4.19.154
- ≥ 4.20 · < 5.4.73
- ≥ 5.5 · < 5.8.17
- ≥ 5.9.0 · < 5.9.2
No data.
Red Hat Enterprise Linux 5
kernel
Out of support scope
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (6)
- https://access.redhat.com/security/cve/CVE-2020-27784 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1901728 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-20286 Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8d5f92b8d30bb4ade76494490c3c065e12411b1 x_refsource_MISCMailing ListPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-27784
- https://www.cve.org/CVERecord?id=CVE-2020-27784
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2020-27784 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1901728 | Issue Tracking | |
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-20286 | Advisory | |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8d5f92b8d30bb4ade76494490c3c065e12411b1 | x_refsource_MISCMailing ListPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2020-27784 | ||
| https://www.cve.org/CVERecord?id=CVE-2020-27784 |
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
No data
GitHub
No data