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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-64221— spi: ti-qspi: fix use-after-free after DMA setup failure

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基金会开源的一款操作系统内核。 Linux kernel 4.12版本存在安全漏洞，该漏洞源于DMA设置失败后未正确清除DMA通道指针，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.13% · P3

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< 9c6f306a8140962c7284197db54b96fdb5f468d6 affected
c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< 3bbbe7ae3fdada0df4157c1ffe989f92dfa8dcd6 affected
c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< d6f422b122922d1abee907d673bcc990e5f3672d affected
c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< f2dc841d7dc9063fe9b47ced869b1271e55052ae affected
c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< 1cd927002120678bd5d23c760246639caa53040e affected
c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< d7a076fb596c7b408ed6df74793a597990a6d860 affected
c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< 178b9b570c0f75fa7e691490520328b20d19138e affected
c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83< ea6ec3343e05f7937a53eb6d7617b3abdb4abc19 affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-64221

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
spi: ti-qspi: fix use-after-free after DMA setup failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: ti-qspi: fix use-after-free after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to clear the DMA channel pointer also if buffer allocation fails to avoid passing a pointer to the released channel to the DMA engine (or trying to free the channel a second time on late probe errors or driver unbind). This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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基金会开源的一款操作系统内核。 Linux kernel 4.12版本存在安全漏洞，该漏洞源于DMA设置失败后未正确清除DMA通道指针，可能导致释放后重用。
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 c687c46e9e4527c4b4d82bc3cca58c1b08bcfb83 ~ 9c6f306a8140962c7284197db54b96fdb5f468d6 -
Linux Linux 4.12 -

II. Public POCs for CVE-2026-64221

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-64221

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-64221 (7)

Same Patch Batch · Linux · 2026-07-24 · 48 CVEs total

CVE-2026-64232 9.8 CRITICAL block: recompute nr_integrity_segments in blk_insert_cloned_request
CVE-2026-64216 9.8 CRITICAL netfs: Fix potential UAF in netfs_unlock_abandoned_read_pages()
CVE-2026-64255 8.8 HIGH wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers
CVE-2026-64247 8.4 HIGH KVM: x86: hyper-v: Bound the bank index when querying sparse banks
CVE-2026-64235 8.1 HIGH x86/ftrace: Relocate %rip-relative percpu refs in dynamic trampolines
CVE-2026-64223 8.1 HIGH wifi: mac80211: consume only present negotiated TTLM maps
CVE-2026-64251 7.8 HIGH pwrseq: core: fix use-after-free in pwrseq_debugfs_seq_next()
CVE-2026-64226 7.8 HIGH sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path
CVE-2026-64218 7.8 HIGH batman-adv: bla: fix report_work leak on backbone_gw purge
CVE-2026-64217 7.8 HIGH netfs: Fix overrun check in netfs_extract_user_iter()
CVE-2026-64210 7.5 HIGH net/mlx5e: xsk: Fix unlocked writing to ICOSQ
CVE-2026-64208 7.5 HIGH crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks
CVE-2026-64243 7.1 HIGH ASoC: codecs: simple-mux: Fix enum control bounds check
CVE-2026-64222 7.0 HIGH octeontx2-pf: avoid double free of pool->stack on AQ init failure
CVE-2026-64219 7.0 HIGH drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_as
CVE-2026-64252 MIPS: DEC: Prevent initial console buffer from landing in XKPHYS
CVE-2026-64224 octeontx2-pf: fix double free in rvu_rep_rsrc_init()
CVE-2026-64250 LoongArch: Report dying CPU to RCU in stop_this_cpu()
CVE-2026-64248 MIPS: smp: report dying CPU to RCU in stop_this_cpu()
CVE-2026-64254 NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR

Showing top 20 of 48 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64221

No comments yet

Leave a comment