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CVE-2026-89582— bnx2x: fix double free in bnx2x_init_firmware() error path

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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于bnx2x_init_firmware()错误路径释放bp->init_ops、bp->init_data和bp->init_ops_offsets后未将其置为NULL，导致bnx2x_release_firmware()再次释放这些指针，可能造成双重释放。

AI Predicted 5.5 Difficulty: Hard EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 94a78b79cb5f14c09a42522738d6694c6a1cdd20< 770715784b689749014ce193ef986b706fe8f51c affected
94a78b79cb5f14c09a42522738d6694c6a1cdd20< c44e5d6c3189241d5f791bc7b1eddde6b92f802c affected
94a78b79cb5f14c09a42522738d6694c6a1cdd20< 07d4516e3eb1fcde4a5db29eb556cdb0ebba6265 affected
94a78b79cb5f14c09a42522738d6694c6a1cdd20< ac280f6872e75df49f3004505bcddff91d9e5362 affected
94a78b79cb5f14c09a42522738d6694c6a1cdd20< dc98e727b9cfc5e19c796bf893878153f00b222b affected
94a78b79cb5f14c09a42522738d6694c6a1cdd20< 4d36e38e48340a1ccf92a98c7a22d07a954e5aa3 affected
94a78b79cb5f14c09a42522738d6694c6a1cdd20< a142c024f07d623e2b6b25943f6c36d4b6b0b4c6 affected
94a78b79cb5f14c09a42522738d6694c6a1cdd20< d2796ffe38cb4155afe0eab23636295b096c27a5 affected
… +10 more rows
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I. Basic Information for CVE-2026-89582

Vulnerability Information
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Vulnerability Title
bnx2x: fix double free in bnx2x_init_firmware() error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bnx2x: fix double free in bnx2x_init_firmware() error path bnx2x_init_firmware() frees bp->init_ops, bp->init_data and bp->init_ops_offsets in its error path without setting them to NULL. The cleanup function bnx2x_release_firmware() frees the same three pointers unconditionally, so if init_firmware fails and release_firmware is later called (e.g. from __bnx2x_remove or through the function state machine), all three are freed a second time. Set each pointer to NULL after kfree() in the error path so that the subsequent kfree(NULL) in bnx2x_release_firmware() is a safe no-op.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于bnx2x_init_firmware()错误路径释放bp->init_ops、bp->init_data和bp->init_ops_offsets后未将其置为NULL，导致bnx2x_release_firmware()再次释放这些指针，可能造成双重释放。
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 94a78b79cb5f14c09a42522738d6694c6a1cdd20 ~ 770715784b689749014ce193ef986b706fe8f51c -
Linux Linux 2.6.31 -

II. Public POCs for CVE-2026-89582

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-89582

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Patches & Fixes for CVE-2026-89582 (8)

Same Patch Batch · Linux · 2026-09-11 · 431 CVEs total

CVE-2026-89688 9.8 CRITICAL nfsd: drop the stateid, not the stateowner, on seqid_op replay retry
CVE-2026-89656 9.8 CRITICAL libceph: reject buckets with mismatched CRUSH ids
CVE-2026-89655 9.8 CRITICAL ceph: fix UAF in __kick_flushing_caps() on cf entry freed during unlock
CVE-2026-89658 9.8 CRITICAL NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup
CVE-2026-89660 9.8 CRITICAL NFSD: Prevent client use-after-free during admin state revocation
CVE-2026-89659 9.8 CRITICAL NFSD: Prevent client use-after-free during delegation revoke
CVE-2026-89662 9.8 CRITICAL NFSD: Prevent lock owner use-after-free during client teardown
CVE-2026-89669 9.8 CRITICAL nfsd: initialize copy-notify stateid before publishing it
CVE-2026-89674 9.8 CRITICAL nfsd: fix XDR length calculation in nfsd4_ff_encode_layoutget
CVE-2026-89675 9.8 CRITICAL nfsd: fix UAF in async copy cancel and shutdown
CVE-2026-89676 9.8 CRITICAL nfsd: fix stale s2s_cp_stateids IDR entry for async COPY
CVE-2026-89677 9.8 CRITICAL nfsd: fix possible fh_compose of wrong dentry in nfsd4_create_file()
CVE-2026-89681 9.8 CRITICAL nfsd: fix layout fence worker double-reference race
CVE-2026-89686 9.8 CRITICAL nfsd: fix BUG_ON in nfsd4_alloc_layout_stateid on racing delegation revoke
CVE-2026-89703 9.8 CRITICAL nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations
CVE-2026-89479 9.8 CRITICAL sctp: stop processing a packet once its association is deleted
CVE-2026-89478 9.8 CRITICAL sctp: drop a chunk if its transport was removed
CVE-2026-89702 9.8 CRITICAL nfsd: size fh_verify server sockaddr slot by xpt_locallen
CVE-2026-89482 9.8 CRITICAL nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone
CVE-2026-89708 9.8 CRITICAL nfsd: RCU-protect cl_cb_session to fix use-after-free on session teardown

Showing top 20 of 431 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-89582

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