NULL pointer dereference in Linux

CVE-2022-49498

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Check for null pointer of pointer substream before dereferencing it Pointer substream is being dereferenced on the assignment of pointer card before substream is being null checked with the macro PCM_RUNTIME_CHECK. Although PCM_RUNTIME_CHECK calls BUG_ON, it still is useful to perform the the pointer check before card is assigned.

EPSS: 0.003 (18.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Linux — versions 95b30a4312545f2dde9db12bf6a425f35d5a0d77, d4cfb30fce03093ad944e0b44bd8f40bdad5330e, 5.6
  • Linux Linux_kernel

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-49498?
CVE-2022-49498 is a medium-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2025-02-26.
How severe is CVE-2022-49498?
Medium severity. CVSS v3 base score is 5.5 out of 10.