CVE-2023-53476
iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()
Reported by linux · Published October 1, 2025
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.
EPSS 0.16% · 5.0th percentile
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| python3-perf | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| python3-perf-debuginfo | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-devel | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-doc | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-debug-core | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-debug | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-debug-devel | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-debug-modules-extra | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-tools-libs | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-modules-extra | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| kernel-debug-debuginfo | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
| perf | errata.rockylinux.org | 4.18.0-553.123.1.el8 |
10 more packages have a fixed version. See every fix in Lookup.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 116aeb8873712ea559d26b0d9d88147af5c88db5, 116aeb8873712ea559d26b0d9d88147af5c88db5, 116aeb8873712ea559d26b0d9d88147af5c88db5 |
| Linux | Linux | 4.18, 0, 5.15.99 |
| Linux | Linux | 6.2.3, 6.1.16, 5.15.99 |
| linux | linux_kernel | 4.18, 4.18, 4.18 |
Timeline
- Oct 1, 2025 CVE Published
- Oct 4, 2025 Coalition ESS Score (7 in total, the first dated here)
- Oct 8, 2025 EPSS Score (29 in total, the first dated here)
- Oct 12, 2025 PoC Published (4 in total, the first dated here)
- Jan 24, 2026 Security Advisory (45 in total, the first dated here)
- Sep 3, 2026 CVE Updated
- Oct 4, 2026 Distribution Patch (35 in total, the first dated here)
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