Answer in brief
CVE-2026-93039 records a High severity (CVSS 7.4) vulnerability in ASoC: meson: Keep link pointers valid on realloc failure. 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 7.4. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <de33afc57f24538186bccf4c4f6c65dd38634fd8 || >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642 || >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <8db0a0fc84e80aa9924e0833aef6cc95df94e5a7 || >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <41e92e0caa1fe3df2efaca346bfcaeb7fb9826ab || >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <0b30fbe6bf7cf6499b19dd886f466e7c9e820089 || >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13d || >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <5ed1b048527bebe4529eb6e01c34dcc5d97ba5fe || >=7864a79f37b55769b817d5e6c5ae0ca4bfdba93b <2aaa41cf974f83a6fb105422bac4e2f107150774 | de33afc57f24538186bccf4c4f6c65dd38634fd8, 1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642, 8db0a0fc84e80aa9924e0833aef6cc95df94e5a7, 41e92e0caa1fe3df2efaca346bfcaeb7fb9826ab, 0b30fbe6bf7cf6499b19dd886f466e7c9e820089, 8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13d, 5ed1b048527bebe4529eb6e01c34dcc5d97ba5fe, 2aaa41cf974f83a6fb105422bac4e2f107150774 |
| Linux/Linuxgeneric | 4.19 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: ASoC: meson: Keep link pointers valid on realloc failure meson_card_reallocate_links() grows the DAI link and private data arrays with two consecutive krealloc() calls and updates the owner pointers only after both calls have succeeded. A successful krealloc() may move the data: it frees the old block and returns a new one. When that happens for the link array and the second krealloc() then fails, card->dai_link still points to the block that krealloc() already freed, and the error path frees the new block too. The probe error path then calls meson_card_clean_references(), which dereferences card->dai_link and kfree()s it again, resulting in a use-after-free and a double free. Commit card->dai_link and card->num_links right after the first krealloc() succeeds, so the pointer always refers to a valid allocation that meson_card_clean_references() can walk and free. krealloc() with __GFP_ZERO zero-initializes the added entries, so walking them on the error path is safe. With both failure paths reduced to a plain return, drop the goto labels and the error message.
Quoted source text, attributed separately from HOL analysis.