CVE-2023-53517 — Integer Overflow or Wraparound in Linux

CWE-190 — Integer Overflow or Wraparound5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.14%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 1

Description

In the Linux kernel, the following vulnerability has been resolved: tipc: do not update mtu if msg_max is too small in mtu negotiation When doing link mtu negotiation, a malicious peer may send Activate msg with a very small mtu, e.g. 4 in Shuang's testing, without checking for the minimum mtu, l->mtu will be set to 4 in tipc_link_proto_rcv(), then n->links[bearer_id].mtu is set to 4294967228, which is a overflow of '4 - INT_H_SIZE - EMSG_OVERHEAD' in tipc_link_mss(). With tipc_link.mtu = 4, …

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel4.1 — 5.10.181+4
▶Debianlinux/linux_kernel< 5.10.191-1+3
▶CVEListV5linux/linuxed193ece2649c194a87a9d8470195760d367c075 — 2bd4ff4ffb92113f8acd04dbaed83269172c24b4+5
▶debiandebian/linux< linux 6.1.37-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2023-53517: In the Linux kernel, the following vulnerability has been resolved: tipc: do not update mtu if msg_max is too small in mtu negotiation When doing link↗2025-10-01
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GHSA
GHSA-hwgx-c53p-8gmw: In the Linux kernel, the following vulnerability has been resolved: tipc: do not update mtu if msg_max is too small in mtu negotiation When doing li↗2025-10-01
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📋Vendor Advisories

2
Red Hat
kernel: Linux kernel: Denial of Service via malicious MTU negotiation in TIPC↗2025-10-01
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Debian
CVE-2023-53517: linux - In the Linux kernel, the following vulnerability has been resolved: tipc: do no...↗2023
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