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CVE-2026-64484— ALSA: es1938: check snd_ctl_new1() return value

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 2.6.12版本存在安全漏洞，该漏洞源于snd_es1938_mixer()函数未检查snd_ctl_new1()返回值，可能导致空指针取消引用。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 96cad5bd7d0a176db3fdc06717a41271247336bd affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6c4efebaf73e217efbd08cdbda805758a7db3680 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 41759affbcfe3d51a32900da9547a1ffd744a85f affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 7531a37720c2545a480fd0fa464978569bf9d6a2 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< af01c48e17a66fa038af210a5c49d6cdefd210bd affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9e53e99b6fa3cd82992d963cbff58dbbd1df8651 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 1949163dee39e0e4a1468f37dd7302962f6af45a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 1edd1f02dddd20aeb6066ded41017615766ea42f affected
… +10 more rows
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I. Basic Information for CVE-2026-64484

Vulnerability Information
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Vulnerability Title
ALSA: es1938: check snd_ctl_new1() return value
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: es1938: check snd_ctl_new1() return value snd_ctl_new1() can return NULL when memory allocation fails. snd_es1938_mixer() does not check the return value before dereferencing the pointer, which can lead to a NULL pointer dereference. Add a NULL check after snd_ctl_new1() and return -ENOMEM if it fails.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 2.6.12版本存在安全漏洞，该漏洞源于snd_es1938_mixer()函数未检查snd_ctl_new1()返回值，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 96cad5bd7d0a176db3fdc06717a41271247336bd -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2026-64484

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III. Intelligence Information for CVE-2026-64484

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Patches & Fixes for CVE-2026-64484 (6)

Same Patch Batch · Linux · 2026-07-25 · 274 CVEs total

CVE-2026-64355 9.8 CRITICAL bpf: Reject fragmented frames in devmap
CVE-2026-64459 9.8 CRITICAL tcp: restore RCU grace period in tcp_ao_destroy_sock
CVE-2026-64303 9.8 CRITICAL spi: fsl-lpspi: terminate the RX channel on TX prepare failure path
CVE-2026-64439 9.8 CRITICAL crypto: krb5 - filter out async aead implementations at alloc
CVE-2026-64410 9.8 CRITICAL netfilter: flowtable: IPIP tunnel hardware offload is not yet support
CVE-2026-64399 9.8 CRITICAL ksmbd: add permission checks for FSCTL_DUPLICATE_EXTENTS_TO_FILE
CVE-2026-64397 9.8 CRITICAL ksmbd: serialize QUERY_DIRECTORY requests per file
CVE-2026-64391 9.8 CRITICAL ksmbd: use opener credentials for ADS I/O
CVE-2026-64387 9.8 CRITICAL smb: client: fix query directory replay double-free
CVE-2026-64386 9.8 CRITICAL smb: client: fix query_info() replay double-free
CVE-2026-64385 9.8 CRITICAL smb: client: fix double-free in SMB2_ioctl() replay
CVE-2026-64383 9.8 CRITICAL smb: client: fix double-free in SMB2_flush() replay
CVE-2026-64384 9.8 CRITICAL smb: client: fix change notify replay double-free
CVE-2026-64268 9.8 CRITICAL RDMA/siw: bound Read Response placement to the RREAD length
CVE-2026-64523 9.8 CRITICAL net/handshake: Take a long-lived file reference at submit
CVE-2026-64269 9.1 CRITICAL RDMA/rtrs-srv: Bound RDMA-Write length to chunk size in rdma_write_sg
CVE-2026-64320 9.1 CRITICAL nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page
CVE-2026-64257 9.1 CRITICAL smb: client: reject overlapping data areas in SMB2 responses
CVE-2026-64393 9.1 CRITICAL ksmbd: run set info with opener credentials
CVE-2026-64392 9.1 CRITICAL ksmbd: use opener credentials for delete-on-close

Showing top 20 of 274 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64484

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