Bug 2539987 (CVE-2026-88841) - CVE-2026-88841 busybox: busybox: dpkg write_status_file() stale cursor causes out-of-bounds read and status file corruption
Summary: CVE-2026-88841 busybox: busybox: dpkg write_status_file() stale cursor causes...
Keywords:
Status: NEW
Alias: CVE-2026-88841
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 09:04 UTC by OSIDB Bzimport
Modified: 2026-09-24 09:04 UTC (History)
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Description OSIDB Bzimport 2026-09-24 09:04:25 UTC 
A vulnerability was found in the BusyBox dpkg implementation (archival/dpkg.c). The write_status_file() function does not reset the field_start cursor between package stanzas. When two packages are removed in a single invocation and the first stanza is larger than the second, the stale cursor causes an out-of-bounds read and silent corruption of the dpkg status file.

Upstream fix commits: f5a4a02a1, d5cc94063.
Reporter: Shubham Raj, Causal Security.
PSIRT Ticket: PSIRTSUPT-23314.
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