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CVE-2026-53291— ALSA: hda/conexant: Fix missing error check for jack detection

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，该漏洞源于在cx_probe()中忽略了对snd_hda_jack_detect_enable_callback()返回值的检查，可能导致内核崩溃。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 21

VendorProduct Version RangeStatus
Linux Linux f13b8cb5a6920ad98b751d3134686f29810577d4< 49c2c5924552e1d2f8b635dee663abebbb7cf63b affected
2cb659ef0ac744545499e7c37665b276d9e405da< a2a33e87a2ffce3046c574d24eec4390c27c9365 affected
24d748413cc4e1d97074bae1f335d32d30912f10< d68f753d89f4ef6e410d7e8b7e8ab2fdde921b80 affected
7aeb259086487417f0fecf66e325bee133e8813a< dd110cc00cf854a8ecd8d003127a4178c28574ea affected
7aeb259086487417f0fecf66e325bee133e8813a< f837c7b85143a7c54140ff41ad5c076b73cd9933 affected
7aeb259086487417f0fecf66e325bee133e8813a< 1da5c73f3793b224696617a2a21def7500ba18d6 affected
7aeb259086487417f0fecf66e325bee133e8813a< b0e2333a231107adedd38c6fcfe1adc6162716fc affected
4a28302b2c681e3cf85e3b41231fff363c4c6a0e affected
… +13 more rows
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I. Basic Information for CVE-2026-53291

Vulnerability Information
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Vulnerability Title
ALSA: hda/conexant: Fix missing error check for jack detection
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/conexant: Fix missing error check for jack detection In cx_probe(), the return value of snd_hda_jack_detect_enable_callback() is ignored. This function returns a pointer, and if it fails (e.g., due to memory allocation failure), it returns an error pointer which must be checked using IS_ERR(). If the registration fails, the driver continues to probe, but the jack detection callback will not be registered. This can lead to a kernel crash later when the driver attempts to handle jack events or accesses the uninitialized structure. Check the return value using IS_ERR() and propagate the error via PTR_ERR() to the probe caller.
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，该漏洞源于在cx_probe()中忽略了对snd_hda_jack_detect_enable_callback()返回值的检查，可能导致内核崩溃。
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 f13b8cb5a6920ad98b751d3134686f29810577d4 ~ 49c2c5924552e1d2f8b635dee663abebbb7cf63b -
Linux Linux 6.8 -

II. Public POCs for CVE-2026-53291

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III. Intelligence Information for CVE-2026-53291

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Patches & Fixes for CVE-2026-53291 (7)

Same Patch Batch · Linux · 2026-06-26 · 47 CVEs total

CVE-2026-53309 9.8 CRITICAL ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
CVE-2026-53281 8.8 HIGH iommu/vt-d: Avoid NULL pointer dereference or refcount corruption
CVE-2026-53322 8.8 HIGH vfio/pci: Clean up DMABUFs before disabling function
CVE-2026-53300 7.8 HIGH net: enetc: fix NTMP DMA use-after-free issue
CVE-2026-53290 7.8 HIGH drm/xe/eustall: Fix drm_dev_put called before stream disable in close
CVE-2026-53284 7.5 HIGH btrfs: only release the dirty pages io tree after successful writes
CVE-2026-53324 net: mana: Use pci_name() for debugfs directory naming
CVE-2026-53306 tty: hvc_iucv: fix off-by-one in number of supported devices
CVE-2026-53319 blk-wbt: remove WARN_ON_ONCE from wbt_init_enable_default()
CVE-2026-53321 io_uring/napi: cap busy_poll_to 10 msec
CVE-2026-53320 nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()
CVE-2026-53323 net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops
CVE-2026-53313 drm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths
CVE-2026-53312 iommu/riscv: Remove overflows on the invalidation path
CVE-2026-53311 fuse: fix uninit-value in fuse_dentry_revalidate()
CVE-2026-53310 soc/tegra: cbb: Fix cross-fabric target timeout lookup
CVE-2026-53308 power: supply: max77705: Free allocated workqueue and fix removal order
CVE-2026-53307 pinctrl: pinconf-generic: Fully validate 'pinmux' property
CVE-2026-53305 usb: typec: ps883x: Fix Oops at unbind
CVE-2026-53303 f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()

Showing top 20 of 47 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53291

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