High 7.1Published Jun 15, 2023

CVE-2023-3268An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs.

Updated under an hour ago (Oct 26, 2026, 5:23 PM ET)

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It affects Linux kernel and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.

CVSS: 7.1 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux kernel linux:kernel (from the name)	from 2.6.22 before 4.19.283; from 4.20 before 5.4.243; from 5.5 before 5.10.180; from 5.11 before 5.15.111; from 5.16 before 6.1.28; from 6.2 before 6.2.15; from 6.3 before 6.3.2	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.22 before 4.19.283; from 4.20 before 5.4.243; from 5.5 before 5.10.180; from 5.11 before 5.15.111; from 5.16 before 6.1.28; from 6.2 before 6.2.15; from 6.3 before 6.3.2	NVD
debian debian_linux debian:debian_linux	10.0; 11.0; 12.0	NVD

References

References

https://lore.kernel.org/lkml/1682238502-1892-1-git-send-email-yangpc%40wangsu.com/T/	vendor-advisory
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2	mailing-list, release-notes
https://www.debian.org/security/2023/dsa-5448	vendor-advisory, third-party-advisory
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html	mailing-list, third-party-advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ec16f1450f4936025a9bdf1a273affdb9732c1	patch
https://www.debian.org/security/2023/dsa-5480	vendor-advisory, third-party-advisory
https://security.netapp.com/advisory/ntap-20230824-0006/	third-party-advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html	mailing-list, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://cert-portal.siemens.com/productcert/html/ssa-806742.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.