CVE-2020-8648: broadcom brocade_fabric_operating_system_firmware Use After Free
Vulnerability summary
CVE-2020-8648 is a high (CVSS 7.1) Use After Free vulnerability in broadcom brocade_fabric_operating_system_firmware. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 51.6% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 34 · Related 21Timeline
- 06-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.66%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.66% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (bugzilla.kernel.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu36 products
- linuxAll versions (No fix recorded) | < 4.4.0-178.208 | < 4.15.0-99.100
- linux-aws< 4.4.0-1066.70 | < 4.4.0-1106.117 | < 4.15.0-1066.70
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3< 5.3.0-1017.18~18.04.1
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
Netapp4 products
Debian2 products
- linux< 5.5.13-1
- debian_linuxEOL8.0
Broadcom1 product
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04
Linux1 product
- linux_kernel≤ 5.5.2
Opensuse1 product
- leapEOL15.1
7 vendors · 46 products
References
20 links- bugzilla.kernel.org/show_bug.cgi?id=206361X Refsource MISCREPORTExploitIssue TrackingVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2020/06/msg00012.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/06/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory
