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CVE-2026-43260— bnxt_en: Fix RSS context delete logic

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是美国等都是美国(Linux)基金会的产品。Linux kernel是开源操作系统Linux所使用的内核。roc req等都是(roc)个人开发者的产品。req是一个使用 Black Magic 的简单 Go HTTP 客户端。ClickHouse ch等都是(ClickHouse)开源的产品。ch是一个ClickHouse的低级Go客户端。 Linux kernel存在安全漏洞，该漏洞源于bnxt_en驱动在RSS上下文删除逻辑中未正确释放VNIC，可能导致VNIC泄漏和后续请求

AI Predicted 3.7 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 667ac333dbb7e265b3f5bc4bc94e236f64682c86< 348a5f8d06c7bdf954e13c17ad5f80b59a075604 affected
667ac333dbb7e265b3f5bc4bc94e236f64682c86< 079986d6db1f8e3d50c55f400cf998ac9690d2c8 affected
667ac333dbb7e265b3f5bc4bc94e236f64682c86< 9a9b89eea4a9cc7726702946ff688d716962fabd affected
667ac333dbb7e265b3f5bc4bc94e236f64682c86< e123d9302d223767bd910bfbcfe607bae909f8ac affected
6.11 affected
< 6.11 unaffected
6.12.75≤ 6.12.* unaffected
6.18.16≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-43260

Vulnerability Information
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Vulnerability Title
bnxt_en: Fix RSS context delete logic
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix RSS context delete logic We need to free the corresponding RSS context VNIC in FW everytime an RSS context is deleted in driver. Commit 667ac333dbb7 added a check to delete the VNIC in FW only when netif_running() is true to help delete RSS contexts with interface down. Having that condition will make the driver leak VNICs in FW whenever close() happens with active RSS contexts. On the subsequent open(), as part of RSS context restoration, we will end up trying to create extra VNICs for which we did not make any reservation. FW can fail this request, thereby making us lose active RSS contexts. Suppose an RSS context is deleted already and we try to process a delete request again, then the HWRM functions will check for validity of the request and they simply return if the resource is already freed. So, even for delete-when-down cases, netif_running() check is not necessary. Remove the netif_running() condition check when deleting an RSS context.
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是美国等都是美国(Linux)基金会的产品。Linux kernel是开源操作系统Linux所使用的内核。roc req等都是(roc)个人开发者的产品。req是一个使用 Black Magic 的简单 Go HTTP 客户端。ClickHouse ch等都是(ClickHouse)开源的产品。ch是一个ClickHouse的低级Go客户端。 Linux kernel存在安全漏洞，该漏洞源于bnxt_en驱动在RSS上下文删除逻辑中未正确释放VNIC，可能导致VNIC泄漏和后续请求
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 667ac333dbb7e265b3f5bc4bc94e236f64682c86 ~ 348a5f8d06c7bdf954e13c17ad5f80b59a075604 -
Linux Linux 6.11 -

II. Public POCs for CVE-2026-43260

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III. Intelligence Information for CVE-2026-43260

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Patches & Fixes for CVE-2026-43260 (4)

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-2026-43260

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