CVE-2023-53335

RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish()

State: Published
Severity: 7.5 High
Published: Sep 17, 2025
Updated: Aug 5, 2026
Reserved: Sep 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish()

If get_ep_from_tid() fails to lookup non-NULL value for ep, ep is dereferenced later regardless of whether it is empty. This patch adds a simple sanity check to fix the issue.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
LinuxLinux	944661dd97f4f257cd914fffec7eb80832ff9141 to before 9dca64042d855a24b0bd81ce242e5dc7e939f6ebAffected 944661dd97f4f257cd914fffec7eb80832ff9141 to before 2cfc00e974d75a3aa8155f2660f57d342e1f67caAffected 944661dd97f4f257cd914fffec7eb80832ff9141 to before 9ddc77eefb2a567b705c3c86ab2ddabe43cadf1bAffected 944661dd97f4f257cd914fffec7eb80832ff9141 to before 283861a4c52c1ea4df3dd1b6fc75a50796ce3524Affected
LinuxLinux	4.7Affected before 4.7Not affected 5.15.99 through 5.15.Not affected 6.1.16 through 6.1.Not affected 6.2.3 through 6.2.*Not affected 6.3 and laterNot affected

References

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