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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-81014— platform/x86: hp-bioscfg: fix heap OOB read in sk_store() and kek_store()

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，已解决以下漏洞： platform/x86: hp-bioscfg: 修复 sk_store() 和 kek_store() 中的堆越界读取漏洞 和 在分配密钥缓冲区之前，会先去除 sysfs 写入数据末尾的换行符： 然而，随后调用 时，传入的是原始的 （而不是 ）作为复制大小，导致 从大小为 的分配区域之外读取了相应数量的字节。只要写入的数据以换行符结尾（这是向 sysfs 使用 shell 写入的常见情况），就会发生恰好越界读取一个字节的情况。 KASAN 直接确认了这一问题： 该问题在

AI Predicted 5.3 Difficulty: Easy

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux b2715aa2e1352c0060b9dcba57a2e465bbfbcd68< 4c6374dcb270d12907b880cf82a5a5ef21785fc3 affected
b2715aa2e1352c0060b9dcba57a2e465bbfbcd68< 7cd8fe01aba303a2382db0966eb6c8ab41d5f3c2 affected
b2715aa2e1352c0060b9dcba57a2e465bbfbcd68< 67b60703d7d8af1ca0e49f72e1bdb1ccecd41b5b affected
b2715aa2e1352c0060b9dcba57a2e465bbfbcd68< a7508c7959ff8d037327d377ed21a9c0eabe4674 affected
6.6 affected
< 6.6 unaffected
6.12.109≤ 6.12.* unaffected
6.18.50≤ 6.18.* unaffected
… +2 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81014

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
platform/x86: hp-bioscfg: fix heap OOB read in sk_store() and kek_store()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: platform/x86: hp-bioscfg: fix heap OOB read in sk_store() and kek_store() sk_store() and kek_store() strip a trailing newline from the sysfs write before allocating the key buffer: length = count; if (buf[length - 1] == '\n') length--; bioscfg_drv.spm_data.signing_key = kmemdup(buf, length, GFP_KERNEL); but then pass the original "count" (not "length") as the copy size to hp_wmi_perform_query(), which memcpy()s that many bytes out of the "length"-sized allocation, reading one byte past it whenever the write ends in a newline, the normal case for a shell "echo" into sysfs. KASAN confirms this directly: BUG: KASAN: slab-out-of-bounds in hp_wmi_perform_query+0x1e9/0x460 [hp_bioscfg] Read of size 28 at addr ffff88813c8e2b80 by task python3/16022 ... sk_store+0xa7/0x240 [hp_bioscfg] kernfs_fop_write_iter+0x3e1/0x5d0 ... The buggy address is located 0 bytes inside of allocated 27-byte region [ffff88813c8e2b80, ffff88813c8e2b9b) Reproduced identically for kek_store, and at multiple write sizes (28, 57, 201 bytes), each time reading exactly one byte past a kmemdup() allocation one byte smaller than the write. Fix by passing "length" instead of "count" to hp_wmi_perform_query() in both functions.
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 b2715aa2e1352c0060b9dcba57a2e465bbfbcd68 ~ 4c6374dcb270d12907b880cf82a5a5ef21785fc3 -
Linux Linux 6.6 -

II. Public POCs for CVE-2026-81014

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81014

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-81014 (4)

Same Patch Batch · Linux · 2026-09-11 · 431 CVEs total

CVE-2026-89490 ocfs2: fix readdir position truncation on 32-bit kernels
CVE-2026-89478 sctp: drop a chunk if its transport was removed
CVE-2026-89479 sctp: stop processing a packet once its association is deleted
CVE-2026-89480 nvme-tcp: reject a read that transferred too few bytes
CVE-2026-89482 nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone
CVE-2026-89481 nvme-tcp: fix host memory disclosure on R2T for a read command
CVE-2026-89483 nvme: zero the discard fallback page
CVE-2026-89484 lockd: fix NULL dereference on lockowner allocation failure
CVE-2026-89485 lockd: pin next file across nlm_inspect_file lock-drop
CVE-2026-89486 ipmi: Fix use-after-free of cmd_rcvr in _ipmi_destroy_user()
CVE-2026-89487 openvswitch: only skb_tx_error() a packet we are about to drop
CVE-2026-89488 openvswitch: Fix CT limit teardown use-after-free
CVE-2026-89489 openrisc: fix arbitrary kernel memory access via or1k_atomic syscall
CVE-2026-89491 ocfs2: cluster: don't sleep while holding o2hb_live_lock in o2hb_region_pin()
CVE-2026-89501 ring-buffer: Hold cpu_buffer::lock when resizing a subbuf
CVE-2026-89498 orangefs: fix double-free of trailer_buf on readdir copy failure
CVE-2026-89499 ring-buffer: Stop remote reader update when page swap fails
CVE-2026-89500 ring-buffer: Make cpu_buffer::free_page a buffer_data_read_page
CVE-2026-89497 orangefs: skip leading spaces before parsing client debug masks
CVE-2026-89502 ring-buffer: Free cpu_buffer::free_page with subbuf_order

Showing top 20 of 431 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-81014

No comments yet

Leave a comment