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CVE-2026-53241— ALSA: seq: dummy: fix UMP event stack overread

AI Predicted 7.8 Difficulty: Moderate EPSS 0.18% · P7
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I. Basic Information for CVE-2026-53241

Vulnerability Information
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Vulnerability Title
ALSA: seq: dummy: fix UMP event stack overread
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: dummy: fix UMP event stack overread The dummy sequencer port forwards events by copying an incoming struct snd_seq_event into a stack temporary, rewriting source and destination, and dispatching the temporary to subscribers. That legacy event storage is smaller than struct snd_seq_ump_event. When a UMP event reaches the dummy client, the copy leaves the UMP flag set but only provides legacy-sized stack storage. The subscriber delivery path then uses snd_seq_event_packet_size() and copies a UMP-sized packet from that stack object, reading past the end of the temporary. Use the existing union __snd_seq_event storage and copy the packet size reported for the incoming event before rewriting the common routing fields. This preserves the full UMP packet for UMP events while keeping legacy event handling unchanged.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 32cb23a0f911317cdb5030035e49a204aa86fef5 ~ a7ef78a2c536242ccb7a4429da01580b2409bb24 -
LinuxLinux 6.10 -

II. Public POCs for CVE-2026-53241

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III. Intelligence Information for CVE-2026-53241

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Patches & Fixes for CVE-2026-53241 (3)

Other References for CVE-2026-53241 (1)

Same Patch Batch · Linux · 2026-06-25 · 147 CVEs total

CVE-2026-53185zram: fix use-after-free in zram_bvec_write_partial()
CVE-2026-53167fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios
CVE-2026-53168fuse: reject fuse_notify() pagecache ops on directories
CVE-2026-53169accel/ethosu: reject NPU_OP_RESIZE commands from userspace
CVE-2026-53171accel/ethosu: fix arithmetic issues in dma_length()
CVE-2026-53170accel/ethosu: reject DMA commands with uninitialized length
CVE-2026-53172accel/ethosu: fix IFM region index out-of-bounds in command stream parser
CVE-2026-53174ovl: keep err zero after successful ovl_cache_get()
CVE-2026-53173accel/ethosu: fix OOB write in ethosu_gem_cmdstream_copy_and_validate()
CVE-2026-53175inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush
CVE-2026-53177bnxt_en: Fix NULL pointer dereference
CVE-2026-53176IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
CVE-2026-53178staging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction
CVE-2026-53180timers/migration: Fix livelock in tmigr_handle_remote_up()
CVE-2026-53179staging: rtl8723bs: fix buffer over-read in rtw_update_protection
CVE-2026-53181vsock/vmci: fix sk_ack_backlog leak on failed handshake
CVE-2026-53182wifi: nl80211: reject oversized EMA RNR lists
CVE-2026-53183mptcp: allow subflow rcv wnd to shrink
CVE-2026-53184udp: clear skb->dev before running a sockmap verdict
CVE-2026-53196USB: serial: io_ti: fix heap overflow in get_manuf_info()

Showing top 20 of 147 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53241

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