CVE-2023-3611

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks. We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.
References
Link Resource
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e337087c3b5805fe0b8a46ba622a962880b5d64 Mailing List Patch Vendor Advisory
https://kernel.dance/3e337087c3b5805fe0b8a46ba622a962880b5d64 Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html Mailing List
https://security.netapp.com/advisory/ntap-20230908-0002/ Third Party Advisory
https://www.debian.org/security/2023/dsa-5480 Third Party Advisory
https://www.debian.org/security/2023/dsa-5492 Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e337087c3b5805fe0b8a46ba622a962880b5d64 Mailing List Patch Vendor Advisory
https://kernel.dance/3e337087c3b5805fe0b8a46ba622a962880b5d64 Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html Mailing List
https://security.netapp.com/advisory/ntap-20230908-0002/ Third Party Advisory
https://www.debian.org/security/2023/dsa-5480 Third Party Advisory
https://www.debian.org/security/2023/dsa-5492 Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-769027.html
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://cert-portal.siemens.com/productcert/html/ssa-806742.html
https://cert-portal.siemens.com/productcert/html/ssa-831302.html
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*

History

14 Oct 2026, 22:17

Type Values Removed Values Added
References
  • () https://cert-portal.siemens.com/productcert/html/ssa-398330.html -
  • () https://cert-portal.siemens.com/productcert/html/ssa-769027.html -
  • () https://cert-portal.siemens.com/productcert/html/ssa-794697.html -
  • () https://cert-portal.siemens.com/productcert/html/ssa-806742.html -
  • () https://cert-portal.siemens.com/productcert/html/ssa-831302.html -

Information

Published : 2023-07-21 21:15

Updated : 2026-10-14 22:17


NVD link : CVE-2023-3611

Mitre link : CVE-2023-3611

CVE.ORG link : CVE-2023-3611


JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-787

Out-of-bounds Write