ASoC: meson: Keep link pointers valid on realloc failure
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.
CVE-2026-93039
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93039
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "de33afc57f24538186bccf4c4f6c65dd38634fd8",
"versionType": "git"
},
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642",
"versionType": "git"
},
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "8db0a0fc84e80aa9924e0833aef6cc95df94e5a7",
"versionType": "git"
},
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "41e92e0caa1fe3df2efaca346bfcaeb7fb9826ab",
"versionType": "git"
},
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "0b30fbe6bf7cf6499b19dd886f466e7c9e820089",
"versionType": "git"
},
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13d",
"versionType": "git"
},
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "5ed1b048527bebe4529eb6e01c34dcc5d97ba5fe",
"versionType": "git"
},
{
"status": "affected",
"version": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b",
"lessThan": "2aaa41cf974f83a6fb105422bac4e2f107150774",
"versionType": "git"
}
],
"programFiles": [
"sound/soc/meson/meson-card-utils.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/soc/meson/meson-card-utils.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93039
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #37774 · Revision 1
- Added to Heist Feed
- Publisher date