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CVE-2024-56533— ALSA: usx2y: Use snd_card_free_when_closed() at disconnection

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于um模块中ubd设备释放时未正确使用drvdata，导致内核崩溃。

AI Predicted 4.0 Difficulty: Theoretical EPSS 0.21% · P11

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 230cd5e24853ed4dd960461989b8ed0986d37a99< 24fe9f7ca83ec9acf765339054951f5cd9ae5c5d affected
230cd5e24853ed4dd960461989b8ed0986d37a99< befcca1777525e37c659b4129d8ac7463b07ef67 affected
230cd5e24853ed4dd960461989b8ed0986d37a99< 7bd8838c0ea886679a32834fdcacab296d072fbe affected
230cd5e24853ed4dd960461989b8ed0986d37a99< e07605d855c4104d981653146a330ea48f6266ed affected
230cd5e24853ed4dd960461989b8ed0986d37a99< ffbfc6c4330fc233698529656798bee44fea96f5 affected
230cd5e24853ed4dd960461989b8ed0986d37a99< e869642a77a9b3b98b0ab2c8fec7af4385140909 affected
230cd5e24853ed4dd960461989b8ed0986d37a99< dafb28f02be407e07a6f679e922a626592b481b0 affected
2.6.13 affected
… +8 more rows
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I. Basic Information for CVE-2024-56533

Vulnerability Information
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Vulnerability Title
ALSA: usx2y: Use snd_card_free_when_closed() at disconnection
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usx2y: Use snd_card_free_when_closed() at disconnection The USB disconnect callback is supposed to be short and not too-long waiting. OTOH, the current code uses snd_card_free() at disconnection, but this waits for the close of all used fds, hence it can take long. It eventually blocks the upper layer USB ioctls, which may trigger a soft lockup. An easy workaround is to replace snd_card_free() with snd_card_free_when_closed(). This variant returns immediately while the release of resources is done asynchronously by the card device release at the last close.
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于um模块中ubd设备释放时未正确使用drvdata，导致内核崩溃。
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 230cd5e24853ed4dd960461989b8ed0986d37a99 ~ 24fe9f7ca83ec9acf765339054951f5cd9ae5c5d -
Linux Linux 2.6.13 -

II. Public POCs for CVE-2024-56533

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III. Intelligence Information for CVE-2024-56533

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Patches & Fixes for CVE-2024-56533 (7)

Same Patch Batch · Linux · 2024-12-27 · 221 CVEs total

CVE-2024-56640 9.8 CRITICAL net/smc: fix LGR and link use-after-free issue
CVE-2024-53209 9.8 CRITICAL bnxt_en: Fix receive ring space parameters when XDP is active
CVE-2024-53206 9.8 CRITICAL tcp: Fix use-after-free of nreq in reqsk_timer_handler().
CVE-2024-53169 9.8 CRITICAL nvme-fabrics: fix kernel crash while shutting down controller
CVE-2024-53186 9.8 CRITICAL ksmbd: fix use-after-free in SMB request handling
CVE-2024-56645 9.8 CRITICAL can: j1939: j1939_session_new(): fix skb reference counting
CVE-2024-53179 9.8 CRITICAL smb: client: fix use-after-free of signing key
CVE-2024-56656 9.8 CRITICAL bnxt_en: Fix aggregation ID mask to prevent oops on 5760X chips
CVE-2024-53177 9.8 CRITICAL smb: prevent use-after-free due to open_cached_dir error paths
CVE-2024-53176 9.8 CRITICAL smb: During unmount, ensure all cached dir instances drop their dentry
CVE-2024-56653 8.8 HIGH Bluetooth: btmtk: avoid UAF in btmtk_process_coredump
CVE-2024-53237 8.8 HIGH Bluetooth: fix use-after-free in device_for_each_child()
CVE-2024-53224 8.8 HIGH RDMA/mlx5: Move events notifier registration to be after device registration
CVE-2024-56669 8.8 HIGH iommu/vt-d: Remove cache tags before disabling ATS
CVE-2024-56626 8.8 HIGH ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write
CVE-2024-56591 8.8 HIGH Bluetooth: hci_conn: Use disable_delayed_work_sync
CVE-2024-56651 8.8 HIGH can: hi311x: hi3110_can_ist(): fix potential use-after-free
CVE-2024-56627 8.1 HIGH ksmbd: fix Out-of-Bounds Read in ksmbd_vfs_stream_read
CVE-2024-56652 7.8 HIGH drm/xe/reg_sr: Remove register pool
CVE-2024-56606 7.8 HIGH af_packet: avoid erroring out after sock_init_data() in packet_create()

Showing top 20 of 221 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-56533

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