01 Record

CVE-2022-49498

ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

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

ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

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 18.3% 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

Low. 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 02:13Z1 YR AGO

Last updated

2026-05-11 19:01Z3 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

65dc6f663d916558139442cffaf40f587260e3c12f3302f5ad49d5835dd90752

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux95b30a4312545f2dde9db12bf6a425f35d5a0d77 to < b2421a196cb0911ea95aec1050a0b830464c8fa6, d4cfb30fce03093ad944e0b44bd8f40bdad5330e to < f2c68c52898f623fe84518da4606538d193b0cca, d4cfb30fce03093ad944e0b44bd8f40bdad5330e to < 7784d22f81a29df2ec57ca90d54f93a35cbcd1a2, d4cfb30fce03093ad944e0b44bd8f40bdad5330e to < 1f2e28857be1e5c7db39bbc221332215fc5467e3, d4cfb30fce03093ad944e0b44bd8f40bdad5330e to < b41ef7ad9238c22aa2e142f5ce4ce1a1a0d48123, d4cfb30fce03093ad944e0b44bd8f40bdad5330e to < 011b559be832194f992f73d6c0d5485f5925a10b, 5.6—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/b2421a196cb0911ea95aec1050a0b830464c8fa6
git.kernel.orghttps://git.kernel.org/stable/c/f2c68c52898f623fe84518da4606538d193b0cca
git.kernel.orghttps://git.kernel.org/stable/c/7784d22f81a29df2ec57ca90d54f93a35cbcd1a2
git.kernel.orghttps://git.kernel.org/stable/c/1f2e28857be1e5c7db39bbc221332215fc5467e3
git.kernel.orghttps://git.kernel.org/stable/c/b41ef7ad9238c22aa2e142f5ce4ce1a1a0d48123
git.kernel.orghttps://git.kernel.org/stable/c/011b559be832194f992f73d6c0d5485f5925a10b

01 Record index

CVE-2022-49498

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2022-49498

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References