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CVE-2026-93039· NVD / CVE Program· CNA Linux

ASoC: meson: Keep link pointers valid on realloc failure

Noroxi assessment

Priority: Monitor (action score 29/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 0b30fbe6bf7cf6499b19dd886f466e7c9e820089, 1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642, 2aaa41cf974f83a6fb105422bac4e2f107150774.

Low priority for now. Upgrade to Linux Linux 0b30fbe6bf7cf6499b19dd886f466e7c9e820089, 1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642, 2aaa41cf974f83a6fb105422bac4e2f107150774 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.4 · v3.1—No exploit Fix available
Published
Sep 17, 2026
Updated
Sep 18, 2026
EPSS
0.1% · 4th percentile
CWE
—

Report tools

JSON

Action score

29

Monitor

Low priority for now.

CVSS
29 / 40 · 7.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.4
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.19affected
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before de33afc57f24538186bccf4c4f6c65dd38634fd8affected · git
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before 1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642affected · git
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before 8db0a0fc84e80aa9924e0833aef6cc95df94e5a7affected · git
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before 41e92e0caa1fe3df2efaca346bfcaeb7fb9826abaffected · git
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before 0b30fbe6bf7cf6499b19dd886f466e7c9e820089affected · git
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before 8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13daffected · git
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before 5ed1b048527bebe4529eb6e01c34dcc5d97ba5feaffected · git
    • 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b and later · before 2aaa41cf974f83a6fb105422bac4e2f107150774affected · git
    • before 4.19not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-93037Sep 17, 2026 · RDMA/hfi1: Propagate sdma_txinit_ahg() errors
    31Monitor
  • ← EarlierCVE-2026-93038Sep 17, 2026 · iio: dac: ad5686: missing NULL check on match data
    0Monitor
  • Later →CVE-2026-93040Sep 17, 2026 · dmaengine: dw-edma: Serialize channel state checks
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0b30fbe6bf7cf6499b19dd886f466e7c9e820089Vendor (CNA)
Linux Linux1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642Vendor (CNA)
Linux Linux2aaa41cf974f83a6fb105422bac4e2f107150774Vendor (CNA)
Linux Linux41e92e0caa1fe3df2efaca346bfcaeb7fb9826abVendor (CNA)
Linux Linux5ed1b048527bebe4529eb6e01c34dcc5d97ba5feVendor (CNA)
Linux Linux8db0a0fc84e80aa9924e0833aef6cc95df94e5a7Vendor (CNA)
Linux Linux8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13dVendor (CNA)
Linux Linuxde33afc57f24538186bccf4c4f6c65dd38634fd8Vendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records