CVE-2026-98212— mmc: hsq: Fix use-after-free in retry work
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： mmc: hsq: 修复重试工作（retry work）中的 use-after-free（释放后使用）问题 当 返回 时， 会将 加入队列；目前只有 是实现 的唯一驱动程序。该工作项嵌入在一个通过 分配的 结构中，但在驱动卸载过程中从未被取消。如果在解除绑定（unbind）时仍有待处理的工作项，它们可能在 分配已被释放后继续执行，从而访问已无效的 和 指针，导致 use-after-free 漏洞。 为解决此问题，使用 在 分配释放之前取消并排空（drain） 。由于
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 6db96e5810e0a6a345b7d78549de7676ae5b2662< c50d6515bffb148c2c12be6d587ec201dfab4c34 |
affected |
6db96e5810e0a6a345b7d78549de7676ae5b2662< df2eb59fd9eb33663dc1053f5a4ed851e0aa1f67 |
affected | ||
6db96e5810e0a6a345b7d78549de7676ae5b2662< 8439bf262ce3267bcfee29d3c61605f1731a2271 |
affected | ||
6db96e5810e0a6a345b7d78549de7676ae5b2662< 45341b341642c377192c95e4d48e0a859cf85f42 |
affected | ||
6db96e5810e0a6a345b7d78549de7676ae5b2662< 5d132990475f02cfa1debe03d50b479432864ebd |
affected | ||
5.8 |
affected | ||
< 5.8 |
unaffected | ||
6.6.158≤ 6.6.* |
unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2026-98212
Vulnerability Information
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Vulnerability Title
mmc: hsq: Fix use-after-free in retry work
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
mmc: hsq: Fix use-after-free in retry work
mmc_hsq_pump_requests() queues retry_work when request_atomic() returns
-EBUSY; today sdhci-sprd is the only consumer that implements
request_atomic(). The work is embedded in a devm-allocated mmc_hsq, but
is never cancelled during driver removal. Work still pending at unbind
can therefore run after the devm allocation has been released and
dereference hsq->mmc and hsq->mrq.
Use devm_work_autocancel() to cancel and drain retry_work before the devm
allocation is released. By the time devres cleanup begins,
mmc_remove_host() has already stopped the host, so no new requests can
arm the work.
This issue was found by an in-house static analysis tool.
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
II. Public POCs for CVE-2026-98212
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-98212 (5)
Same Patch Batch · Linux · 2026-10-06 · 208 CVEs total
| CVE-2026-98323 | 9.8 CRITICAL | RDMA/siw: Bound fragmented header copies by the remaining length |
| CVE-2026-98365 | 9.8 CRITICAL | RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access |
| CVE-2026-98282 | 8.8 HIGH | powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba |
| CVE-2026-98283 | 8.8 HIGH | KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid() |
| CVE-2026-98339 | 8.8 HIGH | wifi: cfg80211: don't filter by BSS type when removing stale entries |
| CVE-2026-98171 | 8.8 HIGH | smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs |
| CVE-2026-98261 | 8.1 HIGH | cifs: Fix server use-after-free in cifs_chan_skip_or_disable() |
| CVE-2026-98357 | 8.1 HIGH | IB/isert: wait for deferred control PDU completions before releasing the connection |
| CVE-2026-98239 | 8.1 HIGH | net: lan743x: fix RX checksum use-after-free |
| CVE-2026-98341 | 7.8 HIGH | wifi: cfg80211: don't free driver-owned scan requests |
| CVE-2026-98324 | 7.8 HIGH | dmaengine: pxa: fix double counting of the hw descriptors |
| CVE-2026-98228 | 7.8 HIGH | mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ |
| CVE-2026-98229 | 7.8 HIGH | xfrm: save input state data before secpath resets |
| CVE-2026-98320 | 7.8 HIGH | netfilter: flowtable: hold reference on ct until flow is released |
| CVE-2026-98318 | 7.8 HIGH | smb: client: validate absolute native symlink targets before NT fixups |
| CVE-2026-98315 | 7.8 HIGH | ntfs: protect runlist updates with the runlist lock |
| CVE-2026-98260 | 7.8 HIGH | exec: Cleanup POSIX timers right after de_thread() |
| CVE-2026-98256 | 7.8 HIGH | signal: Prevent exec() race |
| CVE-2026-98258 | 7.8 HIGH | posix-cpu-timers: Prevent freeing a timer which is queued on the expiry list |
| CVE-2026-98254 | 7.8 HIGH | swiotlb: use the adjusted address for the highmem page lookup |
Showing top 20 of 208 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-98374
tcp: fix use-after-free of retransmit_skb_hint in tcp_send_s -
CVE-2026-98373
mm/hugetlb: preserve mremap address delta when skipping page -
CVE-2026-98372
xfrm: iptfs: fix stack OOB read in iptfs_skb_reset_frag_walk -
CVE-2026-98371
xfrm: iptfs: fix runt reassembly panic from short inner tot_ -
CVE-2026-98370
xfrm: fix compat ALLOCSPI request use-after-free
Same vendor: Linux
-
CVE-2026-98374
tcp: fix use-after-free of retransmit_skb_hint in tcp_send_s -
CVE-2026-98373
mm/hugetlb: preserve mremap address delta when skipping page -
CVE-2026-98372
xfrm: iptfs: fix stack OOB read in iptfs_skb_reset_frag_walk -
CVE-2026-98371
xfrm: iptfs: fix runt reassembly panic from short inner tot_ -
CVE-2026-98370
xfrm: fix compat ALLOCSPI request use-after-free
V. Comments for CVE-2026-98212
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