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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-98559— net/smc: fix UAF on lgr list traversal in smcr_port_err()

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.

在 Linux 内核中，以下漏洞已得到修复： net/smc：修复 smcr_port_err() 中遍历 lgr 列表时引发的释放后使用（UAF）问题。 smcr_port_err() 在遍历 smc_lgr_list.list 时未持有 smc_lgr_list.lock 锁，这导致并发执行的 smc_lgr_terminate_sched() 可能在该 lgr 仍被解引用时将其释放。 修复方案为：在遍历过程中全程持有 smc_lgr_list.lock 锁；同时更新 smc_ib_gid_check()，使其

AI Predicted 7.8 Difficulty: Hard EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 541afa10c126b6c22c2a805a559c70cc41fd156e< 34bcf11cd2528ae00bb6d764d808083c66824277 affected
541afa10c126b6c22c2a805a559c70cc41fd156e< 0edcc4284392b28826b5d37532b366b291e6e0fa affected
541afa10c126b6c22c2a805a559c70cc41fd156e< 00a59600ae72d24859d0ad1783a78bc921bc2599 affected
541afa10c126b6c22c2a805a559c70cc41fd156e< 3d35f069e1c119992000d51236dbe54da2d4e61e affected
541afa10c126b6c22c2a805a559c70cc41fd156e< 3d65a2eb4449fc9658fb860dea893025d028d90e affected
541afa10c126b6c22c2a805a559c70cc41fd156e< a9b968e42690d784c241a0761c10253271f7df5d affected
541afa10c126b6c22c2a805a559c70cc41fd156e< 61cb282fe97b3b0ba32ca09417a693162bf4ae3f affected
5.8 affected
… +8 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-98559

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
net/smc: fix UAF on lgr list traversal in smcr_port_err()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix UAF on lgr list traversal in smcr_port_err() smcr_port_err() traverses smc_lgr_list.list without holding smc_lgr_list.lock, allowing a concurrent smc_lgr_terminate_sched() to free an lgr while it is still being dereferenced. Hold smc_lgr_list.lock across the traversal. Update smc_ib_gid_check() to call smcr_port_err() after releasing the lock.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 541afa10c126b6c22c2a805a559c70cc41fd156e ~ 34bcf11cd2528ae00bb6d764d808083c66824277 -
Linux Linux 5.8 -

II. Public POCs for CVE-2026-98559

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-98559

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-98559 (5)

Same Patch Batch · Linux · 2026-10-18 · 435 CVEs total

CVE-2026-98720 KVM: nVMX: Force MSR bitmap refresh if runtime eVMCS controls are modified
CVE-2026-98733 Bluetooth: hci_core: Serialize fragmented ISO packet queueing
CVE-2026-98732 Bluetooth: btintel: fix buffer over-read in btintel_hw_error()
CVE-2026-98731 Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()
CVE-2026-98730 Bluetooth: btintel_pcie: reject oversized TX packets in send_frame()
CVE-2026-98729 x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h
CVE-2026-98728 tpm: fix off-by-four bounds check in tpm2_get_random()
CVE-2026-98727 nvme-multipath: set BLK_FEAT_ZONED only after the zone info is known
CVE-2026-98726 nvme-multipath: fix underflow in ANA log bounds checks
CVE-2026-98725 nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()
CVE-2026-98724 nvmet: pci-epf: reject too-short SGL segments
CVE-2026-98723 nvmet: copy the hostid into the ctrl before creating PR pc_refs
CVE-2026-98722 mtd: block2mtd: Fix divide error when erase_size is zero
CVE-2026-98721 mtd: rawnand: cadence: Initialize IRQ state before requesting IRQ
CVE-2026-98709 wifi: mac80211: count only matching reservations in reserved switch
CVE-2026-98712 KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq
CVE-2026-98711 wifi: cw1200: fix TX padding OOB read leaking heap data to device
CVE-2026-98710 wifi: iwlegacy: 3945: free EEPROM data on remove
CVE-2026-98713 KVM: arm64: Apply the fine-grained UNDEFs without FEAT_FGT
CVE-2026-98707 wifi: mac80211: shut down RX BA session timer on teardown

Showing top 20 of 435 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98559

No comments yet

Leave a comment