CVE-2021-33909

Katalog CVE

CVSS 7.8 · High EPSS 9,7%

Kerentanan Integer Overflow or Wraparound pada linux kernel, fedoraproject fedora +5 lainnya. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

20 Juli 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound
CWE-787: Out-of-bounds Write

EPSS (30 hari)

9,7% peluang dieksploitasi; lebih tinggi dari 95,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 mailing list · patch · advisory vendor
• https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b patch · advisory pihak ketiga
• https://www.oracle.com/security-alerts/cpujan2022.html patch · advisory pihak ketiga
• http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html exploit · advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html advisory pihak ketiga · vdb entry
• http://www.openwall.com/lists/oss-security/2021/07/22/7 mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2021/08/25/10 mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2021/09/17/2 mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2021/09/17/4 mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2021/09/21/1 mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html mailing list · advisory pihak ketiga
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210819-0004/ advisory pihak ketiga
• https://www.debian.org/security/2021/dsa-4941 advisory pihak ketiga
• https://www.openwall.com/lists/oss-security/2021/07/20/1 exploit · mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FV...