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CVE-2026-88842— Busybox: busybox: dpkg stale field_start pointer causes out-of-bounds read and status file corruption

Quick assessment

Affected
Red Hat Red Hat Hardened Images
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 BusyBox 的 dpkg 组件中发现了一个缺陷。write_status_file() 函数在包段（package stanzas）之间未重置字段游标。当单次调用中移除两个软件包，且第一个段大于第二个段时，状态文件（status file）中可能会丢失第二个软件包的段信息，从而导致有限度的数据损坏。

CVSS 3.3 · Low EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1562.004

Affected Version Matrix 1

VendorProduct Version RangeStatus
Red Hat Red Hat Hardened Images 1.37.0-9.4.hum1< * unaffected
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I. Basic Information for CVE-2026-88842

Vulnerability Information
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Vulnerability Title
Busybox: busybox: dpkg stale field_start pointer causes out-of-bounds read and status file corruption
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in BusyBox dpkg. The write_status_file() function does not reset a field cursor between package stanzas. When two packages are removed in a single invocation and the first stanza is larger than the second, the second package stanza can be dropped from the status file, causing limited data corruption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Hardened Images 1.37.0-9.4.hum1 ~ * cpe:/a:redhat:hummingbird:1

II. Public POCs for CVE-2026-88842

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III. Intelligence Information for CVE-2026-88842

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Vendor Advisories for CVE-2026-88842 (3)

Same Patch Batch · Red Hat · 2026-10-14 · 25 CVEs total

CVE-2026-104795 8.8 HIGH Insights-runtime-extractor: insights-runtime-extractor: container escape via privileged bi
CVE-2026-86848 8.8 HIGH Dpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds
CVE-2026-86567 8.8 HIGH Dpdk: dpdk: vduse handler fails to invalidate vring pointers when iotlb is invalidated, le
CVE-2026-100236 8.6 HIGH Dpdk: dpdk: heap out-of-bounds read/write in gso header copy
CVE-2026-86476 8.4 HIGH Gstreamer1-plugins-base: gst-plugins-base: heap buffer overflow via unvalidated gstvideome
CVE-2026-86565 8.2 HIGH Dpdk: dpdk: guest can desynchronize virtqueue size from inflight descriptor table size, ca
CVE-2026-90954 7.8 HIGH Busybox: busybox: dpkg-deb extraction-root escape via per-ar-member deferred symlink flush
CVE-2026-86563 7.8 HIGH Dpdk: dpdk: double offset bug in vhost log mapping calculation
CVE-2026-86562 7.8 HIGH Dpdk: dpdk: control-queue descriptor double-fetch overflows host heap in dpdk vhost (vduse
CVE-2026-88829 7.2 HIGH Busybox: busybox: http request smuggling via pipelined requests in httpd reverse proxy
CVE-2026-86561 6.5 MEDIUM Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup
CVE-2026-100229 6.5 MEDIUM Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds write in gst_h266_
CVE-2026-86849 6.5 MEDIUM Dpdk: dpdk: integer overflow combined with missing validation leads to host buffer overflo
CVE-2026-86566 6.5 MEDIUM Dpdk: dpdk: guest with runt rx descriptors underflows copy length in vhost enqueue (split
CVE-2026-86845 6.5 MEDIUM Dpdk: dpdk: guest-triggered use-after-free and type confusion in vhost-crypto session clea
CVE-2026-86846 6.5 MEDIUM Dpdk: dpdk: guest can trigger out-of-bounds write by controlling avail ring index in vhost
CVE-2026-86847 6.5 MEDIUM Dpdk: dpdk: guest can trigger infinite loop in vhost-crypto writeback chain cleanup
CVE-2026-86856 6.5 MEDIUM Dpdk: dpdk: stack and heap buffer overflow in nfp vdpa driver
CVE-2026-93683 6.4 MEDIUM Dpdk: dpdk: guest-triggered out-of-bounds walk via vhost indirect descriptor length toctou
CVE-2026-100231 6.1 MEDIUM Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: heap out-of-bounds write in asfm

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Red Hat Hardened Images
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2026-88842

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