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CVE-2021-47501

i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc

MEDIUM
5.5
CVSS Score
Published: May 24, 2024 at 03:01 PM UTC
Updated: June 17, 2026 at 04:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc When trying to dump VFs VSI RX/TX descriptors using debugfs there was a crash due to NULL pointer dereference in i40e_dbg_dump_desc. Added a check to i40e_dbg_dump_desc that checks if VSI type is correct for dumping RX/TX descriptors.

Affected

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

Linux Kernel· Linux
95%
3.12 ≤ v < 5.10.853.12 ≤ v < 5.15.83.12 ≤ v < 5.165.11 ≤ v < 5.15.82e9c290814cc143ceccecb14eac3e7a5da745e5.16 rc15.16 rc25.16 rc35.16 rc4
Vendor states this is fixed in 16431e442db248ecd8aa9457cf0a656f1885f56e (fixed)
Vendor states this is fixed in 23ec111bf3549aae37140330c31a16abfc172421 (fixed)
Vendor states this is fixed in e5b7fb2198abc50058f1a29c395b004f76ab1c83 (fixed)
Vendor states this is fixed in 3.12 (unaffected)
Vendor states this is fixed in 5.10.85 (unaffected)
Vendor states this is fixed in 5.15.8 (unaffected)
Vendor states this is fixed in 5.16 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/16431e442db248ecd8aa9457cf0a656f1885f56e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/23ec111bf3549aae37140330c31a16abfc172421
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e5b7fb2198abc50058f1a29c395b004f76ab1c83

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUM[email protected]
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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