CVE-2023-53296 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 16

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: check send stream number after wait_for_sndbuf This patch fixes a corner case where the asoc out stream count may change after wait_for_sndbuf. When the main thread in the client starts a connection, if its out stream count is set to N while the in stream count in the server is set to N - 2, another thread in the client keeps sending the msgs with stream number N - 1, and waits for sndbuf before processing INIT_ACK. Ho…

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_kernel4.15 — 4.19.281+6
▶Debianlinux/linux_kernel< 5.10.178-1+3
▶CVEListV5linux/linux5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 — 9346a1a21142357972a6f466ba6275ddc54b04ac+7
▶debiandebian/linux< linux 6.1.25-1 (bookworm)

Patches

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

🔴Vulnerability Details

2
OSV
CVE-2023-53296: In the Linux kernel, the following vulnerability has been resolved: sctp: check send stream number after wait_for_sndbuf This patch fixes a corner cas↗2025-09-16
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GHSA
GHSA-vwf3-3r65-6v22: In the Linux kernel, the following vulnerability has been resolved: sctp: check send stream number after wait_for_sndbuf This patch fixes a corner c↗2025-09-16
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📋Vendor Advisories

2
Red Hat
kernel: sctp: check send stream number after wait_for_sndbuf↗2025-09-16
▶
Debian
CVE-2023-53296: linux - In the Linux kernel, the following vulnerability has been resolved: sctp: check...↗2023
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CVE-2023-53296 — NULL Pointer Dereference in Linux | cvebase