01 Record

CVE-2022-49649

xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

View raw JSON

02 Description

xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.8% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-02-26 02:23Z1 YR AGO

Last updated

2026-05-11 19:04Z3 MO AGO

Reserved

2025-02-26

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

c712c8965ed2dd6d6e89cf8b06f8844bea279fbd7bc46dc26d119b8c61fdb3f7

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux98f6d57ced73b723551568262019f1d6c8771f20 to < c0fcceb5f3f1ec197c014fe218c2f28108cacd27, 98f6d57ced73b723551568262019f1d6c8771f20 to < d5320c6a27aa975aff740f9cb481dcbde48f4348, 98f6d57ced73b723551568262019f1d6c8771f20 to < 5a071aefd6414af5a20321ab58a0557b81993687, 98f6d57ced73b723551568262019f1d6c8771f20 to < 7425479d20f9e96f7c3ec8e8a93fe0d7478724cb, 98f6d57ced73b723551568262019f1d6c8771f20 to < b9c32a6886af79d6e0ad87a7b01800ed079cdd02, 98f6d57ced73b723551568262019f1d6c8771f20 to < b99174ac57fe5d8867448c03b23828e63f24cb1c, 98f6d57ced73b723551568262019f1d6c8771f20 to < f0b5c819b062df8bf5f2acf4697e3871cb3722da, 98f6d57ced73b723551568262019f1d6c8771f20 to < 94e8100678889ab428e68acadf042de723f094b9, 4.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/c0fcceb5f3f1ec197c014fe218c2f28108cacd27
git.kernel.orghttps://git.kernel.org/stable/c/d5320c6a27aa975aff740f9cb481dcbde48f4348
git.kernel.orghttps://git.kernel.org/stable/c/5a071aefd6414af5a20321ab58a0557b81993687
git.kernel.orghttps://git.kernel.org/stable/c/7425479d20f9e96f7c3ec8e8a93fe0d7478724cb
git.kernel.orghttps://git.kernel.org/stable/c/b9c32a6886af79d6e0ad87a7b01800ed079cdd02
git.kernel.orghttps://git.kernel.org/stable/c/b99174ac57fe5d8867448c03b23828e63f24cb1c
git.kernel.orghttps://git.kernel.org/stable/c/f0b5c819b062df8bf5f2acf4697e3871cb3722da
git.kernel.orghttps://git.kernel.org/stable/c/94e8100678889ab428e68acadf042de723f094b9

01 Record index

CVE-2022-49649

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2022-49649

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References