Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-89511— qede: Fix NULL pointer dereference in TPA fragment processing

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qede驱动在处理TPA分片时未正确初始化buffer.data，导致空指针取消引用，可能造成内核崩溃。

CVSS 7.5 · High EPSS 0.71% · P52

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8a8633978b842c88fbcfe00d4e5dde96048f630e< e2214e2793154b745436e46c6a9a7985d9b3781d affected
8a8633978b842c88fbcfe00d4e5dde96048f630e< dd8bc0a9d87d2b048711edd17ba7286432edd285 affected
8a8633978b842c88fbcfe00d4e5dde96048f630e< fa7c9bd2c4a8de167e2fb32968ca4d91dd774375 affected
8a8633978b842c88fbcfe00d4e5dde96048f630e< a5e1fdc126ab337d601d1a00cc4b47910679d005 affected
8a8633978b842c88fbcfe00d4e5dde96048f630e< 7f911e208b3ca2c76d9f2bbba1f54b9403568c10 affected
8a8633978b842c88fbcfe00d4e5dde96048f630e< 2a952fb1b20d83e83ca852773e6188511f7d2191 affected
8a8633978b842c88fbcfe00d4e5dde96048f630e< f5c8619ccbd70102642120c4c6fda1c048a555fd affected
8a8633978b842c88fbcfe00d4e5dde96048f630e< 06aa3d26327f24edd039ff249672fdf6f2ba5695 affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-89511

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
qede: Fix NULL pointer dereference in TPA fragment processing
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: qede: Fix NULL pointer dereference in TPA fragment processing Under memory pressure, the qede driver encounters NULL pointer dereferences when processing TPA continuation fragments. Commit 8a8633978b84 ("qede: Add build_skb() support.") accidentally dropped the assignment of tpa_info->buffer.data in qede_tpa_start(). When memory pressure causes an SKB allocation failure in qede_tpa_start(), the driver sets tpa_start_fail = true and attempts to recycle the physical page later in qede_tpa_end() via qede_reuse_page(). However, because buffer.data was left uninitialized (NULL), qede_reuse_page() pushes a "ghost" BD (valid DMA mapping but NULL data pointer) back into the active Rx ring. The next time the hardware uses this ring slot, it passes a NULL page to qede_fill_frag_skb(), causing a kernel panic. Example crash from production system: BUG: unable to handle kernel NULL pointer dereference at 0x8 RIP: qede_fill_frag_skb+0x96/0x430 [qede] Call Trace: qede_rx_int+0xb06/0x1de0 qede_poll+0x2f4/0x6c0 __napi_poll+0x2d/0x130 Fix the root cause by restoring the tpa_info->buffer.data assignment in qede_tpa_start(), ensuring valid pages are correctly tracked and recycled. Additionally, update the stale comment for struct qede_agg_info::buffer to reflect its current usage.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于qede驱动在处理TPA分片时未正确初始化buffer.data，导致空指针取消引用，可能造成内核崩溃。
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 8a8633978b842c88fbcfe00d4e5dde96048f630e ~ e2214e2793154b745436e46c6a9a7985d9b3781d -
Linux Linux 4.18 -

II. Public POCs for CVE-2026-89511

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-89511

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-89511 (8)

Same Patch Batch · Linux · 2026-09-11 · 430 CVEs total

CVE-2026-89703 9.8 CRITICAL nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations
CVE-2026-89689 9.8 CRITICAL nfsd: don't free session slots that are still in use
CVE-2026-89558 9.8 CRITICAL md/raid10: fix still_degraded being inverted in raid10_sync_request()
CVE-2026-89555 9.8 CRITICAL mpls: reload header after pskb_may_pull()
CVE-2026-89550 9.8 CRITICAL SUNRPC: svcauth_gss: enforce krb5 token minimum length
CVE-2026-89551 9.8 CRITICAL SUNRPC: xdr_buf_trim: clamp buf->len to avoid underflow
CVE-2026-89546 9.8 CRITICAL SUNRPC: close backchannel before destroying callback service
CVE-2026-89542 9.8 CRITICAL SUNRPC: harden gss_krb5_unwrap_v2 against short tokens
CVE-2026-89541 9.8 CRITICAL SUNRPC: harden gss_unwrap_resp_priv length checks
CVE-2026-89538 9.8 CRITICAL SUNRPC: Reject krb5 v2 wrap tokens with oversized ec field
CVE-2026-89536 9.8 CRITICAL SUNRPC: wait for in-flight client TLS handshake callback
CVE-2026-89533 9.8 CRITICAL svcrdma: Fix offset arithmetic in read_chunk_range
CVE-2026-89530 9.8 CRITICAL svcrdma: Reject inline replies that overflow the pull-up buffer
CVE-2026-89526 9.8 CRITICAL svcrdma: Validate Read chunk positions before reconstruction
CVE-2026-81002 9.8 CRITICAL xdp: fix zero-copy frame layout
CVE-2026-89482 9.8 CRITICAL nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone
CVE-2026-89478 9.8 CRITICAL sctp: drop a chunk if its transport was removed
CVE-2026-89479 9.8 CRITICAL sctp: stop processing a packet once its association is deleted
CVE-2026-89485 9.8 CRITICAL lockd: pin next file across nlm_inspect_file lock-drop
CVE-2026-80986 9.8 CRITICAL net/smc: bound the peer rkey counts in SMC-Rv2 LLC messages

Showing top 20 of 430 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-89511

No comments yet

Leave a comment