What’s Vulnerable › Vulnerabilities

CVE-2023-3268

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-16 · updated 2026-10-14
• Weakness: CWE-125

Description

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.

Affected products

• Debian Linux: 10.0, 11.0, 12.0
• 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 — fixed in 4.19.283, 5.10.180, 5.15.111, 5.4.243, 6.1.28, 6.2.15

How to fix

Upgrade to a fixed version: Linux kernel 4.19.283, 5.10.180, 5.15.111, 5.4.243. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ec16f1450f4936025a9bdf1a273affdb9732c1
• https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
• https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
• https://lore.kernel.org/lkml/1682238502-1892-1-git-send-email-yangpc%40wangsu.com/T/
• https://security.netapp.com/advisory/ntap-20230824-0006/
• https://www.debian.org/security/2023/dsa-5448
• https://www.debian.org/security/2023/dsa-5480
• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ec16f1450f4936025a9bdf1a273affdb9732c1
• https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
• https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html

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