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CVE-2026-52964— ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans

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基金会开源的操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于USB MIDI 2.0端点解析器未正确验证描述符长度，可能导致恶意设备读取已超出描述符范围的字节。

AI Predicted 6.5 Difficulty: Hard EPSS 0.16% · P5

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux ff49d1df79aef7580fe3ac99d17c3f886655d080< fafc97bd01e4c737eaeafadfdadb1af4bbfa7307 affected
ff49d1df79aef7580fe3ac99d17c3f886655d080< a310b4bebda5e4a1b26520c0cc5145ccd6d617e2 affected
ff49d1df79aef7580fe3ac99d17c3f886655d080< f9c184a83574549a36ea69b755f650e57d164c78 affected
ff49d1df79aef7580fe3ac99d17c3f886655d080< 17e76b19de1aff5ff4de64d269290bd1b07a01d3 affected
ff49d1df79aef7580fe3ac99d17c3f886655d080< 918be519c7876329e1b6e2ea1c59f0b75e792dca affected
6.5 affected
< 6.5 unaffected
6.6.141≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-52964

Vulnerability Information
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Vulnerability Title
ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans The USB MIDI 2.0 endpoint parser has the same descriptor walking pattern as the legacy MIDI parser. It validates bLength against bNumGrpTrmBlock before reading baAssoGrpTrmBlkID[], but not against the remaining bytes in the endpoint-extra scan. A malformed device can therefore make later baAssoGrpTrmBlkID[] reads consume bytes past the walked descriptor. Reject zero-length and overlong descriptors while walking endpoint extras.
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基金会开源的操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于USB MIDI 2.0端点解析器未正确验证描述符长度，可能导致恶意设备读取已超出描述符范围的字节。
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 ff49d1df79aef7580fe3ac99d17c3f886655d080 ~ fafc97bd01e4c737eaeafadfdadb1af4bbfa7307 -
Linux Linux 6.5 -

II. Public POCs for CVE-2026-52964

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III. Intelligence Information for CVE-2026-52964

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Patches & Fixes for CVE-2026-52964 (5)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-53049 9.8 CRITICAL gfs2: add some missing log locking
CVE-2026-52993 9.8 CRITICAL tipc: fix double-free in tipc_buf_append()
CVE-2026-52989 9.8 CRITICAL nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-52986 9.8 CRITICAL netfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-52982 9.8 CRITICAL net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-53002 9.8 CRITICAL netfilter: conntrack: remove sprintf usage
CVE-2026-53006 9.8 CRITICAL ipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-53045 9.8 CRITICAL memory: tegra124-emc: Fix dll_change check
CVE-2026-53086 9.8 CRITICAL net: bcmgenet: fix racing timeout handler
CVE-2026-53046 9.8 CRITICAL ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-52955 9.8 CRITICAL libceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-53010 9.8 CRITICAL ksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-53088 9.8 CRITICAL net: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-52914 9.8 CRITICAL batman-adv: fix fragment reassembly length accounting
CVE-2026-53055 9.8 CRITICAL crypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-52924 9.8 CRITICAL sctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-52931 9.8 CRITICAL batman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-52999 9.1 CRITICAL netfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-53043 9.1 CRITICAL ocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-52958 9.1 CRITICAL libceph: Fix potential out-of-bounds access in osdmap_decode()

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-52964

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