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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-21832— block: don't revert iter for -EIOCBQUEUED

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于blkdev_read_iter函数未正确处理返回值为-EIOCBQUEUED的情况，可能导致iov_iter_revert函数抛出警告。

CVSS 7.8 · High EPSS 0.19% · P8

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 3e1f941dd9f33776b3df4e30f741fe445ff773f3< 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb affected
3e1f941dd9f33776b3df4e30f741fe445ff773f3< 84671b0630ccb46ae9f1f99a45c7d63ffcd6a474 affected
3e1f941dd9f33776b3df4e30f741fe445ff773f3< 68f16d3034a06661245ecd22f0d586a8b4e7c473 affected
3e1f941dd9f33776b3df4e30f741fe445ff773f3< a58f136bad29f9ae721a29d98c042fddbee22f77 affected
3e1f941dd9f33776b3df4e30f741fe445ff773f3< b13ee668e8280ca5b07f8ce2846b9957a8a10853 affected
5.17 affected
< 5.17 unaffected
6.1.129≤ 6.1.* unaffected
… +4 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-21832

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
block: don't revert iter for -EIOCBQUEUED
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: block: don't revert iter for -EIOCBQUEUED blkdev_read_iter() has a few odd checks, like gating the position and count adjustment on whether or not the result is bigger-than-or-equal to zero (where bigger than makes more sense), and not checking the return value of blkdev_direct_IO() before doing an iov_iter_revert(). The latter can lead to attempting to revert with a negative value, which when passed to iov_iter_revert() as an unsigned value will lead to throwing a WARN_ON() because unroll is bigger than MAX_RW_COUNT. Be sane and don't revert for -EIOCBQUEUED, like what is done in other spots.
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于blkdev_read_iter函数未正确处理返回值为-EIOCBQUEUED的情况，可能导致iov_iter_revert函数抛出警告。
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 3e1f941dd9f33776b3df4e30f741fe445ff773f3 ~ 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb -
Linux Linux 5.17 -

II. Public POCs for CVE-2025-21832

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-21832

请登录查看更多情报信息。

Patches & Fixes for CVE-2025-21832 (5)

Same Patch Batch · Linux · 2025-03-06 · 46 CVEs total

CVE-2025-21829 9.8 CRITICAL RDMA/rxe: Fix the warning "__rxe_cleanup+0x12c/0x170 [rdma_rxe]"
CVE-2025-21828 8.8 HIGH wifi: mac80211: don't flush non-uploaded STAs
CVE-2025-21825 7.8 HIGH bpf: Cancel the running bpf_timer through kworker for PREEMPT_RT
CVE-2024-58070 7.8 HIGH bpf: bpf_local_storage: Always use bpf_mem_alloc in PREEMPT_RT
CVE-2024-58083 7.8 HIGH KVM: Explicitly verify target vCPU is online in kvm_get_vcpu()
CVE-2024-58069 7.8 HIGH rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read
CVE-2024-58086 7.8 HIGH drm/v3d: Stop active perfmon if it is being destroyed
CVE-2024-58079 7.8 HIGH media: uvcvideo: Fix crash during unbind if gpio unit is in use
CVE-2024-58060 7.8 HIGH bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing
CVE-2024-58075 7.8 HIGH crypto: tegra - do not transfer req when tegra init fails
CVE-2025-21827 7.8 HIGH Bluetooth: btusb: mediatek: Add locks for usb_driver_claim_interface()
CVE-2025-21826 7.8 HIGH netfilter: nf_tables: reject mismatching sum of field_len with set key length
CVE-2024-58053 7.5 HIGH rxrpc: Fix handling of received connection abort
CVE-2025-21830 7.3 HIGH landlock: Handle weird files
CVE-2024-58062 wifi: iwlwifi: mvm: avoid NULL pointer dereference
CVE-2024-58064 wifi: cfg80211: tests: Fix potential NULL dereference in test_cfg80211_parse_colocated_ap(
CVE-2024-58066 clk: mmp: pxa1908-apbcp: Fix a NULL vs IS_ERR() check
CVE-2024-58065 clk: mmp: pxa1908-apbc: Fix NULL vs IS_ERR() check
CVE-2024-58063 wifi: rtlwifi: fix memory leaks and invalid access at probe error path
CVE-2024-58073 drm/msm/dpu: check dpu_plane_atomic_print_state() for valid sspp

Showing top 20 of 46 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21832

No comments yet

Leave a comment