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CVE-2026-43257— media: cx88: Add missing unmap in snd_cx88_hw_params()

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cx88驱动在snd_cx88_hw_params函数错误路径中未释放DMA映射资源，可能导致资源泄漏。

AI Predicted 4.4 Difficulty: Easy EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux b2c75abde0debfb824f72845c3ed77d4b66798a0< f0d7f735eba963742009b0706e19dd0bed91537a affected
b2c75abde0debfb824f72845c3ed77d4b66798a0< dc911fccc6e08ef46a66b2a42a764252b001ee3c affected
b2c75abde0debfb824f72845c3ed77d4b66798a0< 24f3dabeb97bd0bec8c1c926c97e3eb6a8129225 affected
b2c75abde0debfb824f72845c3ed77d4b66798a0< 10ab64f8efc2f479293dce929fde326c285fc96f affected
b2c75abde0debfb824f72845c3ed77d4b66798a0< e3fb15aadfc8643203bbdf97ace0396e4586fa64 affected
b2c75abde0debfb824f72845c3ed77d4b66798a0< 1ce8c2a8f050a23240553c8bae628ac623f9dbc1 affected
b2c75abde0debfb824f72845c3ed77d4b66798a0< 3baefeeb7b85e1e34eebef399ffa312be7179e30 affected
b2c75abde0debfb824f72845c3ed77d4b66798a0< dbc527d980f7ba8559de38f8c1e4158c71a78915 affected
… +10 more rows
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I. Basic Information for CVE-2026-43257

Vulnerability Information
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Vulnerability Title
media: cx88: Add missing unmap in snd_cx88_hw_params()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: cx88: Add missing unmap in snd_cx88_hw_params() In error path, add cx88_alsa_dma_unmap() to release resource acquired by cx88_alsa_dma_map().
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cx88驱动在snd_cx88_hw_params函数错误路径中未释放DMA映射资源，可能导致资源泄漏。
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 b2c75abde0debfb824f72845c3ed77d4b66798a0 ~ f0d7f735eba963742009b0706e19dd0bed91537a -
Linux Linux 3.19 -

II. Public POCs for CVE-2026-43257

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III. Intelligence Information for CVE-2026-43257

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Patches & Fixes for CVE-2026-43257 (8)

Same Patch Batch · Linux · 2026-05-06 · 224 CVEs total

CVE-2026-43186 9.8 CRITICAL ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()
CVE-2026-43185 9.8 CRITICAL ksmbd: fix signededness bug in smb_direct_prepare_negotiation()
CVE-2026-43125 9.8 CRITICAL dlm: validate length in dlm_search_rsb_tree
CVE-2026-43208 9.8 CRITICAL net: do not pass flow_id to set_rps_cpu()
CVE-2026-43198 9.8 CRITICAL tcp: fix potential race in tcp_v6_syn_recv_sock()
CVE-2026-43114 9.4 CRITICAL netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry
CVE-2026-43117 9.1 CRITICAL btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
CVE-2026-43083 9.1 CRITICAL net: ioam6: fix OOB and missing lock
CVE-2026-43197 9.1 CRITICAL netconsole: avoid OOB reads, msg is not nul-terminated
CVE-2026-43232 8.8 HIGH net: wan: farsync: Fix use-after-free bugs caused by unfinished tasklets
CVE-2026-43215 8.8 HIGH cifs: Fix locking usage for tcon fields
CVE-2026-43112 8.8 HIGH fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath
CVE-2026-43113 8.8 HIGH wifi: wl1251: validate packet IDs before indexing tx_frames
CVE-2026-43187 8.8 HIGH xfs: delete attr leaf freemap entries when empty
CVE-2026-43110 8.8 HIGH wifi: brcmfmac: validate bsscfg indices in IF events
CVE-2026-43283 8.8 HIGH net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle
CVE-2026-43176 8.8 HIGH wifi: rtw89: pci: validate release report content before using for RTL8922DE
CVE-2026-43249 8.8 HIGH 9p/xen: protect xen_9pfs_front_free against concurrent calls
CVE-2026-43158 8.8 HIGH xfs: fix freemap adjustments when adding xattrs to leaf blocks
CVE-2026-43172 8.8 HIGH wifi: iwlwifi: fix 22000 series SMEM parsing

Showing top 20 of 224 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-43257

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