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CVE-2025-71192— ALSA: ac97: fix a double free in snd_ac97_controller_register()

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snd_ac97_controller_register函数存在双重释放。

CVSS 7.0 · High EPSS 0.13% · P3

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 74426fbff66eea8e8d1f42c8238c268d1e63a832< c80f9b3349a99a9d5b295f5bbc23f544c5995ad7 affected
74426fbff66eea8e8d1f42c8238c268d1e63a832< 21f8bc5179bed91c3f946adb5e55d717b891960c affected
74426fbff66eea8e8d1f42c8238c268d1e63a832< fcc04c92cbb5497ce67c58dd2f0001bb87f40396 affected
74426fbff66eea8e8d1f42c8238c268d1e63a832< cb73d37ac18bc1716690ff5255a0ef1952827e9e affected
74426fbff66eea8e8d1f42c8238c268d1e63a832< 830988b6cf197e6dcffdfe2008c5738e6c6c3c0f affected
4.15 affected
< 4.15 unaffected
6.1.161≤ 6.1.* unaffected
… +4 more rows
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I. Basic Information for CVE-2025-71192

Vulnerability Information
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Vulnerability Title
ALSA: ac97: fix a double free in snd_ac97_controller_register()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: fix a double free in snd_ac97_controller_register() If ac97_add_adapter() fails, put_device() is the correct way to drop the device reference. kfree() is not required. Add kfree() if idr_alloc() fails and in ac97_adapter_release() to do the cleanup. Found by code review.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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snd_ac97_controller_register函数存在双重释放。
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 74426fbff66eea8e8d1f42c8238c268d1e63a832 ~ c80f9b3349a99a9d5b295f5bbc23f544c5995ad7 -
Linux Linux 4.15 -

II. Public POCs for CVE-2025-71192

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III. Intelligence Information for CVE-2025-71192

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Same Patch Batch · Linux · 2026-02-04 · 79 CVEs total

CVE-2026-23098 8.8 HIGH netrom: fix double-free in nr_route_frame()
CVE-2026-23077 7.8 HIGH mm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge
CVE-2026-23074 7.8 HIGH net/sched: Enforce that teql can only be used as root qdisc
CVE-2026-23103 7.8 HIGH ipvlan: Make the addrs_lock be per port
CVE-2026-23066 7.8 HIGH rxrpc: Fix recvmsg() unconditional requeue
CVE-2026-23105 7.8 HIGH net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
CVE-2026-23095 7.5 HIGH gue: Fix skb memleak with inner IP protocol 0.
CVE-2026-23067 iommu/io-pgtable-arm: fix size_t signedness bug in unmap path
CVE-2026-23065 platform/x86/amd: Fix memory leak in wbrf_record()
CVE-2026-23064 net/sched: act_ife: avoid possible NULL deref
CVE-2026-23063 uacce: ensure safe queue release with state management
CVE-2026-23062 platform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro
CVE-2026-23058 can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak
CVE-2026-23057 vsock/virtio: Coalesce only linear skb
CVE-2026-23056 uacce: implement mremap in uacce_vm_ops to return -EPERM
CVE-2025-71199 iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver
CVE-2025-71198 iio: imu: st_lsm6dsx: fix iio_chan_spec for sensors without event detection
CVE-2025-71197 w1: therm: Fix off-by-one buffer overflow in alarms_store
CVE-2026-23055 i2c: riic: Move suspend handling to NOIRQ phase
CVE-2026-23059 scsi: qla2xxx: Sanitize payload size to prevent member overflow

Showing top 20 of 79 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71192

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