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CVE-2026-43113— wifi: wl1251: validate packet IDs before indexing tx_frames

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wl1251_tx_packet_cb函数未验证固件完成ID范围，可能导致数组越界访问。

CVSS 8.8 · High EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2f01a1f58889fbfeb68b1bc1b52e4197f3333490< 6509dbece7339dbc8980c706b9d623119a6de105 affected
2f01a1f58889fbfeb68b1bc1b52e4197f3333490< a8a11a876f0a97061ee5d9e61d0f5a0df7e241c7 affected
2f01a1f58889fbfeb68b1bc1b52e4197f3333490< e0dc1ad870d6788b049bfe1511ac75b2333a7550 affected
2f01a1f58889fbfeb68b1bc1b52e4197f3333490< b6ba1eacf276063ebeefbbae8056043c24f2efaf affected
2f01a1f58889fbfeb68b1bc1b52e4197f3333490< df15adc692a802636dd3f258fc7cca8bf7a0ed9a affected
2f01a1f58889fbfeb68b1bc1b52e4197f3333490< 8d7465be5163a923ee5d7459719ef5a021c1584a affected
2f01a1f58889fbfeb68b1bc1b52e4197f3333490< 26ee518695c484f75e3606d631278e84bd24ae02 affected
2f01a1f58889fbfeb68b1bc1b52e4197f3333490< 0fd56fad9c56356e7fa7a7c52e7ecbf807a44eb0 affected
… +10 more rows
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I. Basic Information for CVE-2026-43113

Vulnerability Information
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Vulnerability Title
wifi: wl1251: validate packet IDs before indexing tx_frames
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wl1251: validate packet IDs before indexing tx_frames wl1251_tx_packet_cb() uses the firmware completion ID directly to index the fixed 16-entry wl->tx_frames[] array. The ID is a raw u8 from the completion block, and the callback does not currently verify that it fits the array before dereferencing it. Reject completion IDs that fall outside wl->tx_frames[] and keep the existing NULL check in the same guard. This keeps the fix local to the trust boundary and avoids touching the rest of the completion flow.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/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wl1251_tx_packet_cb函数未验证固件完成ID范围，可能导致数组越界访问。
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 2f01a1f58889fbfeb68b1bc1b52e4197f3333490 ~ 6509dbece7339dbc8980c706b9d623119a6de105 -
Linux Linux 2.6.31 -

II. Public POCs for CVE-2026-43113

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III. Intelligence Information for CVE-2026-43113

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Patches & Fixes for CVE-2026-43113 (8)

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

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-2026-43125 9.8 CRITICAL dlm: validate length in dlm_search_rsb_tree
CVE-2026-43185 9.8 CRITICAL ksmbd: fix signededness bug in smb_direct_prepare_negotiation()
CVE-2026-43186 9.8 CRITICAL ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()
CVE-2026-43114 9.4 CRITICAL netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry
CVE-2026-43197 9.1 CRITICAL netconsole: avoid OOB reads, msg is not nul-terminated
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-2026-43172 8.8 HIGH wifi: iwlwifi: fix 22000 series SMEM parsing
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-2026-43112 8.8 HIGH fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath
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-2026-43249 8.8 HIGH 9p/xen: protect xen_9pfs_front_free against concurrent calls
CVE-2026-43239 8.8 HIGH smb: client: prevent races in ->query_interfaces()
CVE-2026-43158 8.8 HIGH xfs: fix freemap adjustments when adding xattrs to leaf blocks
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

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-2026-43113

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