CVE-2020-8835
Linux kernel bpf verifier vulnerability
02 Description
Linux kernel bpf verifier vulnerability
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 6.01% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 93.1% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-04-02 18:00Z6 YR AGO
- Last updated
- 2024-09-17 02:15Z2 YR AGO
- Reserved
- 2020-02-10
- Assigning CNA
- canonical
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.1
- Document digest
- 6b0f4c1da49c9629b00ce4b08a81b51f33a4b3a6928b4fc398c3d6ce05538316
05 Affected products
06 References
- usn.ubuntu.comUSN-4313-1https://usn.ubuntu.com/4313-1/
- www.thezdi.comhttps://www.thezdi.com/blog/2020/3/19/pwn2own-2020-day-one-results
- lore.kernel.orghttps://lore.kernel.org/bpf/20200330160324.15259-1-daniel%40iogearbox.net/T/
- www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/03/30/3
- usn.ubuntu.comhttps://usn.ubuntu.com/usn/usn-4313-1
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef
- lists.fedoraproject.orgFEDORA-2020-4ef0bcc89chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7OONYGMSYBEFHLHZJK3GOI5Z553G4LD/
- lists.fedoraproject.orgFEDORA-2020-666f3b1ac3https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXBWSHZ6DJIZVXKXGZPK6QPFCY7VKZEG/
- lists.fedoraproject.orgFEDORA-2020-73c00eda1chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TF4PQZBEPNXDSK5DOBMW54OCLP25FTCD/
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20200430-0004/
- www.openwall.com[oss-security] 20210720 CVE-2021-33909: size_t-to-int vulnerability in Linux's filesystem layerhttp://www.openwall.com/lists/oss-security/2021/07/20/1
07 Remediation
Revert commit 581738a681b6 ("bpf: Provide better register bounds after jmp32 instructions").
08 Fixed in
Arch Linux
- linux Fixed in 5.5.13.arch2-1
- linux-hardened Fixed in 5.5.13.b-1
- linux-lts Fixed in 5.4.28-2
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- linux Fixed in 5.5.13-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.5.13-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.5.13-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux-azure-5.3 Fixed in 5.3.0-1018.19~18.04.1
- linux-azure-edge No fix yet
- linux-gcp-5.3 Fixed in 5.3.0-1016.17~18.04.1
- linux-gcp-edge No fix yet
- linux-gke-5.3 Fixed in 5.3.0-1016.17~18.04.1
- linux-hwe Fixed in 5.3.0-45.37~18.04.1
- linux-hwe-edge No fix yet
- linux-oracle-5.3 Fixed in 5.3.0-1013.14~18.04.1
- linux-raspi2-5.3 Fixed in 5.3.0-1021.23~18.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-raspi2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.