NVD / CVE Program· CNA Linux

CVE-2024-46798: ASoC: dapm: Fix UAF for snd_soc_pcm_runtime object

Noroxi assessment

Priority: Monitor (action score 31/100)

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: 0.21% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 3033ed903b4f28b5e1ab66042084fbc2c48f8624, 5d13afd021eb43868fe03cef6da34ad08831ad6d, 6a14fad8be178df6c4589667efec1789a3307b4e; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3033ed903b4f28b5e1ab66042084fbc2c48f8624, 5d13afd021eb43868fe03cef6da34ad08831ad6d, 6a14fad8be178df6c4589667efec1789a3307b4e; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5 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: dapm: Fix UAF for snd_soc_pcm_runtime object When using kernel with the following extra config, - CONFIG_KASAN=y - CONFIG_KASAN_GENERIC=y - CONFIG_KASAN_INLINE=y - CONFIG_KASAN_VMALLOC=y - CONFIG_FRAME_WARN=4096 kernel detects that snd_pcm_suspend_all() access a freed 'snd_soc_pcm_runtime' object when the system is suspended, which leads to a use-after-free bug: [ 52.047746] BUG: KASAN: use-after-free in snd_pcm_suspend_all+0x1a8/0x270 [ 52.047765] Read of size 1 at addr ffff0000b9434d50 by task systemd-sleep/2330 [ 52.047785] Call trace: [ 52.047787] dump_backtrace+0x0/0x3c0 [ 52.047794] show_stack+0x34/0x50 [ 52.047797] dump_stack_lvl+0x68/0x8c [ 52.047802] print_address_description.constprop.0+0x74/0x2c0 [ 52.047809] kasan_report+0x210/0x230 [ 52.047815] __asan_report_load1_noabort+0x3c/0x50 [ 52.047820] snd_pcm_suspend_all+0x1a8/0x270 [ 52.047824] snd_soc_suspend+0x19c/0x4e0 The snd_pcm_sync_stop() has a NULL check on 'substream->runtime' before making any access. So we need to always set 'substream->runtime' to NULL everytime we kfree() it.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2024-08139

Published: Sep 18, 2024
Updated: Aug 5, 2026
EPSS: 0.2% · 11th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 7.8
CNA · Linux: 7.8; agree

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

Get told when this record changes

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

If any of these changes, we'll tell you in the daily email digest.

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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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel5.4 and later · before 5.4.284
linux linux kernel5.5 and later · before 5.10.226
linux linux kernel5.11 and later · before 5.15.167
linux linux kernel5.16 and later · before 6.1.110
linux linux kernel6.2 and later · before 6.6.51
linux linux kernel6.7 and later · before 6.10.10
linux linux kernel6.11

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
- 5.4affected
- a72706ed8208ac3f72d1c3ebbc6509e368b0dcb0 and later · before 993b60c7f93fa1d8ff296b58f646a867e945ae89affected · git
- a72706ed8208ac3f72d1c3ebbc6509e368b0dcb0 and later · before 8ca21e7a27c66b95a4b215edc8e45e5d66679f9faffected · git
- a72706ed8208ac3f72d1c3ebbc6509e368b0dcb0 and later · before 3033ed903b4f28b5e1ab66042084fbc2c48f8624affected · git
- a72706ed8208ac3f72d1c3ebbc6509e368b0dcb0 and later · before fe5046ca91d631ec432eee3bdb1f1c49b09c8b5eaffected · git
- a72706ed8208ac3f72d1c3ebbc6509e368b0dcb0 and later · before 5d13afd021eb43868fe03cef6da34ad08831ad6daffected · git
- a72706ed8208ac3f72d1c3ebbc6509e368b0dcb0 and later · before 6a14fad8be178df6c4589667efec1789a3307b4eaffected · git
- a72706ed8208ac3f72d1c3ebbc6509e368b0dcb0 and later · before b4a90b543d9f62d3ac34ec1ab97fc5334b048565affected · git
- before 5.4not affected · semver
- 5.4.284 and later · up to and including 5.4.*not affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.112-1	6.1.112-1
Debian:13	linux	before 6.10.11-1	6.10.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
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CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2024-46796Sep 18, 2024 · smb: client: fix double put of @cfile in smb2_set_path_size()
31Monitor
← EarlierCVE-2024-46797Sep 18, 2024 · powerpc/qspinlock: Fix deadlock in MCS queue
22Monitor
Later →CVE-2024-46799Sep 18, 2024 · net: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX
22Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
Linux Linux	3033ed903b4f28b5e1ab66042084fbc2c48f8624	Vendor (CNA)
Linux Linux	5d13afd021eb43868fe03cef6da34ad08831ad6d	Vendor (CNA)
Linux Linux	6a14fad8be178df6c4589667efec1789a3307b4e	Vendor (CNA)
Linux Linux	8ca21e7a27c66b95a4b215edc8e45e5d66679f9f	Vendor (CNA)
Linux Linux	993b60c7f93fa1d8ff296b58f646a867e945ae89	Vendor (CNA)
Linux Linux	b4a90b543d9f62d3ac34ec1ab97fc5334b048565	Vendor (CNA)
Linux Linux	fe5046ca91d631ec432eee3bdb1f1c49b09c8b5e	Vendor (CNA)
Azure Linux 3.0 ARM	6.6.51.1-5 · kernel	Microsoft (MSRC)
Azure Linux 3.0 x64	6.6.51.1-5 · kernel	Microsoft (MSRC)
CBL Mariner 2.0 ARM	5.15.167.1-1 · kernel	Microsoft (MSRC)
CBL Mariner 2.0 x64	5.15.167.1-1 · kernel	Microsoft (MSRC)
debian:linux	6.1.112-1 · Debian:12	Package 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.

No history yet (it accumulates with the daily EPSS job).

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-24-1498 · Sep 19, 2024(Linux Kernel Güvenlik Bildirimi)

All national notices →

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

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: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

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

References

git.kernel.org/stable/c/3033ed903b4f28b5e1ab66042084fbc2c48f8624

Show all references (8 more)

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

All records