CVE-2023-53476 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 96.90%
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: iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry() This condition needs to match the previous "if (epcp->state == LISTEN) {" exactly to avoid a NULL dereference of either "listen_ep" or "ep". The problem is that "epcp" has been re-assigned so just testing "if (epcp->state == LISTEN) {" a second time is not sufficient.

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_kernel4.18 — 5.15.99+2
▶Debianlinux/linux_kernel< 6.1.20-1+2
▶CVEListV5linux/linux116aeb8873712ea559d26b0d9d88147af5c88db5 — 76e0396313c79ecd0df44ee3c18745cfac52b3e6+4
▶debiandebian/linux< linux 6.1.20-1 (bookworm)

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-m68q-hxmp-jh9g: In the Linux kernel, the following vulnerability has been resolved: iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry() This con↗2025-10-01
▶
OSV
CVE-2023-53476: In the Linux kernel, the following vulnerability has been resolved: iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry() This condi↗2025-10-01
▶

📋Vendor Advisories

2
Red Hat
kernel: iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()↗2025-10-01
▶
Debian
CVE-2023-53476: linux - In the Linux kernel, the following vulnerability has been resolved: iw_cxgb4: F...↗2023
▶