CVE-2022-49498
ALSA: pcm: Check for null pointer of pointer substream before dereferencing it
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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.
Timeline
ID reserved
By Linux
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 95b30a4312545f2dde9db12bf6a425f35d5a0d77 – < b2421a196cb0911ea95aec1050a0b830464c8fa6
- affected d4cfb30fce03093ad944e0b44bd8f40bdad5330e – < f2c68c52898f623fe84518da4606538d193b0cca
- affected d4cfb30fce03093ad944e0b44bd8f40bdad5330e – < 7784d22f81a29df2ec57ca90d54f93a35cbcd1a2
- affected d4cfb30fce03093ad944e0b44bd8f40bdad5330e – < 1f2e28857be1e5c7db39bbc221332215fc5467e3
- affected d4cfb30fce03093ad944e0b44bd8f40bdad5330e – < b41ef7ad9238c22aa2e142f5ce4ce1a1a0d48123
- affected d4cfb30fce03093ad944e0b44bd8f40bdad5330e – < 011b559be832194f992f73d6c0d5485f5925a10b
- affected 5.6
- unaffected < 5.6
- unaffected 5.10.121 – ≤ 5.10.*
- unaffected 5.15.46 – ≤ 5.15.*
- unaffected 5.17.14 – ≤ 5.17.*
- unaffected 5.18.3 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (6)
- https://git.kernel.org/stable/c/b2421a196cb0911ea95aec1050a0b830464c8fa6 (opens in a new tab)
- https://git.kernel.org/stable/c/f2c68c52898f623fe84518da4606538d193b0cca (opens in a new tab)
- https://git.kernel.org/stable/c/7784d22f81a29df2ec57ca90d54f93a35cbcd1a2 (opens in a new tab)
- https://git.kernel.org/stable/c/1f2e28857be1e5c7db39bbc221332215fc5467e3 (opens in a new tab)
- https://git.kernel.org/stable/c/b41ef7ad9238c22aa2e142f5ce4ce1a1a0d48123 (opens in a new tab)
- https://git.kernel.org/stable/c/011b559be832194f992f73d6c0d5485f5925a10b (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49498)Record last updated .