CVEvulnerability
CVE-2020-25641
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-10-06
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-835
Description
A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Affected configurations
• linux linux kernel (<= 5.8.13)
• linux linux kernel 5.9.0
• redhat enterprise linux 7.0
• redhat enterprise linux 8.0
• opensuse leap 15.1
• opensuse leap 15.2
• debian debian linux 9.0
• canonical ubuntu linux 18.04
• canonical ubuntu linux 20.04
Related
Weakness · CWE (1)
- CWE-835 Loop with Unreachable Exit Condition weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/10/06/9 Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1881424 Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124 Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4576-1/ Third Party Advisory
- https://www.kernel.org/doc/html/latest/block/biovecs.html Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/10/06/9 Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1881424 Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124 Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4576-1/ Third Party Advisory
- https://www.kernel.org/doc/html/latest/block/biovecs.html Vendor Advisory