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CVE-2026-98024— s390/ism: folio_put() after error

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，已修复以下漏洞： s390/ism: 在错误处理中使用 folio_put() dmb->cpu_addr 是通过 folio_alloc() 分配的。在 ism_alloc_dmb() 的错误退出路径中，应使用 folio_put() 替代 kfree()，以避免 slab 分配器损坏。 同时，在调用 folio_put() 后将 dmb->cpu_addr 重置为空，以防止后续调用者发生非预期的使用-after-free（UAF）漏洞。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 2 AI

T1135 · Network Share Discovery T1206

Affected Version Matrix 15

VendorProduct Version RangeStatus
Linux Linux 121fb75414ab8debafd548bded9d888cd5a8f165< 90f6f5cb331af52b14c0f309fb27dc243e8e2982 affected
83781384a96b95e2b6403d3c8a002b2c89031770< 890e2ef726904d1d8328e4b9f5090eeb8761b9d1 affected
83781384a96b95e2b6403d3c8a002b2c89031770< eebb6a9017b55ac05be770cf7b89f9da49505ae7 affected
83781384a96b95e2b6403d3c8a002b2c89031770< 60983356fab0c1171c5cb1b56a36349ebadc608e affected
83781384a96b95e2b6403d3c8a002b2c89031770< 907a56ab3eb8a58500a58daa76087f17bb2b6826 affected
f3e23edc4917f72139b805f208aeadf23376a0b5 affected
6.6.29< 6.6.158 affected
6.8.8< 6.9 affected
… +7 more rows
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I. Basic Information for CVE-2026-98024

Vulnerability Information
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Vulnerability Title
s390/ism: folio_put() after error
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: s390/ism: folio_put() after error dmb->cpu_addr was allocated via folio_alloc(). Use folio_put() instead of kfree() in the error exit of ism_alloc_dmb() to avoid slab allocator corruption. While at it, reset dmb->cpu_addr after folio_put to avoid unintentional UAF by future callers.
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 121fb75414ab8debafd548bded9d888cd5a8f165 ~ 90f6f5cb331af52b14c0f309fb27dc243e8e2982 -
Linux Linux 6.9 -

II. Public POCs for CVE-2026-98024

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III. Intelligence Information for CVE-2026-98024

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Patches & Fixes for CVE-2026-98024 (5)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-98002 7.8 HIGH iommu/amd: Fix ineffective error check in nested domain allocation
CVE-2026-97575 7.8 HIGH media: v4l2-ctrls: validate AV1 tile counts
CVE-2026-97576 7.8 HIGH media: v4l2-ctrls: validate HEVC tile counts
CVE-2026-97941 7.8 HIGH mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race
CVE-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-97937 7.8 HIGH ftrace: fork: Initialize function graph state before copy_exec_state()
CVE-2026-97580 7.8 HIGH media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
CVE-2026-97940 7.8 HIGH ipv6: fix fib6 walker UAF on seq stop

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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