Answer in brief
CVE-2021-47650 records a Medium severity (CVSS 5.5) vulnerability in ASoC: soc-compress: prevent the potentially use of null pointer. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=467fece8fbc6774a3a3bd0981e1a342fb5022706 <68a69ad8df959e5211ed4a8e120783b2d352ea74 || >=467fece8fbc6774a3a3bd0981e1a342fb5022706 <4639c1d97f385f4784f44d66a3da0672f4951ada || >=467fece8fbc6774a3a3bd0981e1a342fb5022706 <fc237b8d624f4bcb0f21a532627ce4e3b3a85569 || >=467fece8fbc6774a3a3bd0981e1a342fb5022706 <08af6da684b44097ea09f1d74d5858b837ed203b || >=467fece8fbc6774a3a3bd0981e1a342fb5022706 <f69a75cb8a98c6c487d620442c68595726a69f60 || >=467fece8fbc6774a3a3bd0981e1a342fb5022706 <de2c6f98817fa5decb9b7d3b3a8a3ab864c10588 | 68a69ad8df959e5211ed4a8e120783b2d352ea74, 4639c1d97f385f4784f44d66a3da0672f4951ada, fc237b8d624f4bcb0f21a532627ce4e3b3a85569, 08af6da684b44097ea09f1d74d5858b837ed203b, f69a75cb8a98c6c487d620442c68595726a69f60, de2c6f98817fa5decb9b7d3b3a8a3ab864c10588 |
| Linux/Linuxgeneric | 5.4 | Not reported |
Published upstream
Feb 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ASoC: soc-compress: prevent the potentially use of null pointer There is one call trace that snd_soc_register_card() ->snd_soc_bind_card()->soc_init_pcm_runtime() ->snd_soc_dai_compress_new()->snd_soc_new_compress(). In the trace the 'codec_dai' transfers from card->dai_link, and we can see from the snd_soc_add_pcm_runtime() in snd_soc_bind_card() that, if value of card->dai_link->num_codecs is 0, then 'codec_dai' could be null pointer caused by index out of bound in 'asoc_rtd_to_codec(rtd, 0)'. And snd_soc_register_card() is called by various platforms. Therefore, it is better to add the check in the case of misusing. And because 'cpu_dai' has already checked in soc_init_pcm_runtime(), there is no need to check again. Adding the check as follow, then if 'codec_dai' is null, snd_soc_new_compress() will not pass through the check 'if (playback + capture != 1)', avoiding the leftover use of 'codec_dai'.
Quoted source text, attributed separately from HOL analysis.