UAF in Linux kernel's tcindex (traffic control index filter) implementation

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Summary

CVECVE-2023-1281
StatePUBLISHED
AssignerGoogle
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-03-22 14:15:16 UTC
Updated2026-07-30 17:16:26 UTC
DescriptionUse After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux Kernel affected 4.14.0 5.10.169 semver Linux
CNA Linux Linux Kernel affected 5.11.0 5.15.95 semver Linux
CNA Linux Linux Kernel affected 5.16.0 6.1.13 semver Linux
CNA Linux Linux Kernel unaffected 6.2.0 semver Linux
CNA Linux Linux Kernel unaffected ee059170b1f7e94e55fa6cadee544e176a6e59c2 git Linux

References

ReferenceSourceLinkTags
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch, Vendor Advisory
oss-security - CVE-2023-1281, CVE-2023-1829: Linux kernel: Vulnerabilities in the tcindex classifier af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
[SECURITY] [DLA 3403-1] linux security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
CVE-2023-1281 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
[SECURITY] [DLA 3404-1] linux-5.10 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
???????? af854a3a-2127-422b-91ae-364da2661108 kernel.dance Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: valis (en)

Legacy QID Mappings

  • 160859 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-4517)
  • 181765 Debian Security Update for linux-5.10 (DLA 3404-1)
  • 181768 Debian Security Update for linux (DLA 3403-1)
  • 182612 Debian Security Update for linux (CVE-2023-1281)
  • 199254 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5978-1)
  • 199256 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5977-1)
  • 199292 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6025-1)
  • 199294 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6024-1)
  • 199295 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6031-1)
  • 199296 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6029-1)
  • 199300 Ubuntu Security Notification for Linux kernel (Qualcomm Snapdragon) Vulnerabilities (USN-6030-1)
  • 199301 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6027-1)
  • 199303 Ubuntu Security Notification for Linux kernel (HWE) Vulnerabilities (USN-6040-1)
  • 199321 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6057-1)
  • 199356 Ubuntu Security Notification for Linux kernel (BlueField) Vulnerabilities (USN-6093-1)
  • 199385 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6134-1)
  • 199465 Ubuntu Security Notification for Linux kernel (Xilinx ZynqMP) Vulnerabilities (USN-6222-1)
  • 199614 Ubuntu Security Notification for Linux kernel (IoT) Vulnerabilities (USN-6256-1)
  • 241753 Red Hat Update for kpatch-patch (RHSA-2023:3853)
  • 241754 Red Hat Update for kernel (RHSA-2023:3852)
  • 241820 Red Hat Update for kernel (RHSA-2023:4130)
  • 241824 Red Hat Update for kpatch-patch (RHSA-2023:4145)
  • 241825 Red Hat Update for kpatch-patch (RHSA-2023:4146)
  • 241831 Red Hat Update for kernel-rt (RHSA-2023:4126)
  • 241832 Red Hat Update for kernel (RHSA-2023:4125)
  • 241862 Red Hat Update for kernel-rt (RHSA-2023:4255)
  • 241863 Red Hat Update for kernel (RHSA-2023:4256)
  • 241864 Red Hat Update for kpatch-patch (RHSA-2023:4262)
  • 241927 Red Hat Update for kernel-rt (RHSA-2023:4541)
  • 241934 Red Hat Update for kpatch-patch (RHSA-2023:4531)
  • 241936 Red Hat Update for kernel (RHSA-2023:4517)
  • 378468 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-20230042)
  • 378473 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX2-SA-2023:0021)
  • 378512 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0042)
  • 378710 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0079)
  • 672935 EulerOS Security Update for kernel (EulerOS-SA-2023-1824)
  • 672952 EulerOS Security Update for kernel (EulerOS-SA-2023-1806)
  • 673005 EulerOS Security Update for kernel (EulerOS-SA-2023-1873)
  • 673074 EulerOS Security Update for kernel (EulerOS-SA-2023-2193)
  • 673117 EulerOS Security Update for kernel (EulerOS-SA-2023-2152)
  • 673182 EulerOS Security Update for kernel (EulerOS-SA-2023-2335)
  • 673393 EulerOS Security Update for kernel (EulerOS-SA-2023-2647)
  • 674113 EulerOS Security Update for kernel (EulerOS-SA-2023-2689)
  • 753901 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1803-1)
  • 753902 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1800-1)
  • 753903 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1801-1)
  • 753905 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1811-1)
  • 753914 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:1848-1)
  • 755193 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 44 for SLE 15 SP1) (SUSE-SU-2023:4280-1)
  • 906736 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (25684-1)
  • 906762 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (25690-1)
  • 941227 AlmaLinux Security Update for kernel (ALSA-2023:4517)
  • 941228 AlmaLinux Security Update for kernel-rt (ALSA-2023:4541)
  • 961032 Rocky Linux Security Update for kernel (RLSA-2023:4517)
  • 961046 Rocky Linux Security Update for kernel-rt (RLSA-2023:4541)

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