CVE-2023-53476

iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()

MEDIUM
5.5
CVSS Score
Published: October 1, 2025 at 11:42 AM UTC
Updated: June 17, 2026 at 06:45 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.18 ≤ v < 5.15.994.18 ≤ v < 6.1.164.18 ≤ v < 6.2.34.18 ≤ v < 6.35.16 ≤ v < 6.1.166.2 ≤ v < 6.2.3116aeb8873712ea559d26b0d9d88147af5c88db54.18
Vendor states this is fixed in 24278dc380aab6a1aef0a75317f57ad4c2453cf6 (fixed)
Vendor states this is fixed in 4ca446b127c568b59cb8d9748b6f70499624bb18 (fixed)
Vendor states this is fixed in 76e0396313c79ecd0df44ee3c18745cfac52b3e6 (fixed)
Vendor states this is fixed in dd55240e4364d64befcc575b0d33091881524f42 (fixed)
Vendor states this is fixed in 4.18 (unaffected)
Vendor states this is fixed in 5.15.99 (unaffected)
Vendor states this is fixed in 6.1.16 (unaffected)
Vendor states this is fixed in 6.2.3 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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