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CVE-2023-53335

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

MEDIUM
5.5
CVSS Score
Published: September 17, 2025 at 02:56 PM UTC
Updated: August 5, 2026 at 10:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

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

Linux Kernel· Linux
95%
4.7 ≤ v < 5.15.994.7 ≤ v < 6.1.164.7 ≤ v < 6.2.34.7 ≤ v < 6.35.16 ≤ v < 6.1.166.2 ≤ v < 6.2.34.7944661dd97f4f257cd914fffec7eb80832ff9141
Vendor states this is fixed in 283861a4c52c1ea4df3dd1b6fc75a50796ce3524 (fixed)
Vendor states this is fixed in 2cfc00e974d75a3aa8155f2660f57d342e1f67ca (fixed)
Vendor states this is fixed in 9dca64042d855a24b0bd81ce242e5dc7e939f6eb (fixed)
Vendor states this is fixed in 9ddc77eefb2a567b705c3c86ab2ddabe43cadf1b (fixed)
Vendor states this is fixed in 4.7 (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)

References (4)

Patch
Source: cverecord
https://git.kernel.org/stable/c/9dca64042d855a24b0bd81ce242e5dc7e939f6eb
Patch
Source: cverecord
https://git.kernel.org/stable/c/2cfc00e974d75a3aa8155f2660f57d342e1f67ca
Patch
Source: cverecord
https://git.kernel.org/stable/c/9ddc77eefb2a567b705c3c86ab2ddabe43cadf1b
Patch
Source: cverecord
https://git.kernel.org/stable/c/283861a4c52c1ea4df3dd1b6fc75a50796ce3524

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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