CVEvulnerability
CVE-2021-33909
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-07-20
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-190, CWE-787
Description
fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
Affected configurations
• linux linux kernel (>= 3.12.43 < 3.13)
• linux linux kernel (>= 3.16 < 4.4.276)
• linux linux kernel (>= 4.5 < 4.9.276)
• linux linux kernel (>= 4.10 < 4.14.240)
• linux linux kernel (>= 4.15 < 4.19.198)
• linux linux kernel (>= 4.20 < 5.4.134)
• linux linux kernel (>= 5.5 < 5.10.52)
• linux linux kernel (>= 5.11 < 5.12.19)
• linux linux kernel (>= 5.13 < 5.13.4)
• fedoraproject fedora 34
• debian debian linux 9.0
• debian debian linux 10.0
• netapp hci management node
• netapp solidfire
• oracle communications session border controller 8.2
• oracle communications session border controller 8.3
• oracle communications session border controller 8.4
• oracle communications session border controller 9.0
• sonicwall sma1000 firmware (<= 12.4.2-02044)
Related
References
- http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2021/07/22/7 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/25/10 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ lists.fedoraproject.org
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210819-0004/ Third Party Advisory
- https://www.debian.org/security/2021/dsa-4941 Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/07/20/1 Exploit, Mailing List, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
- http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2021/07/22/7 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/25/10 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Mailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ lists.fedoraproject.org
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210819-0004/ Third Party Advisory
- https://www.debian.org/security/2021/dsa-4941 Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/07/20/1 Exploit, Mailing List, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory