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tar

1 tool · 1 release line

Archiving utility for tar files, with gzip, bzip2 and xz compression. Every tool here carries the same sandbox boundary.

kapsl tar
Source ↗ Registry ↗

Release lines we maintain · the project decides these

findings shown are the whole project at that line

Tag Resolves to Lifecycle Updated Findings What the tag promises
  • stable — floats, carries security updates
  • unstable — tracks pre-releases, may break
  • eol — frozen, upstream is done

Tools in this project · pick one to inspect

all share one boundary

Tool Capabilities Seccomp Findings Image Description
showing tar from tar@latest → 1.35 stable

Findings

H4M4L3

identical on amd64, arm64 — one table describes both

CVE Sev CVSS Affects Description
CVE-2026-86145 ↗ H 8.2 pcre2 PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a…
CVE-2026-89161 ↗ H 7.4 pcre2 In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur.
CVE-2026-54370 ↗ H 7.2 acl acl before version 2.4.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link between an lstat() check and…
CVE-2026-54369 ↗ H 7.1 acl acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-based functions acl_get_file(), acl_set_file(), acl_extended_file(), and acl_delete_def_file() that allows local attackers to escalate privileges by…
CVE-2026-89158 ↗ M 6.5 pcre2 PCRE2 before 10.48, on 32-bit platforms, has a pcre2_compile_32 integer overflow and resultant out-of-bounds write.
CVE-2026-89157 ↗ M 5.7 pcre2 PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.
CVE-2026-18477 ↗ M 4.4 tar A TOCTOU (Time-of-Check Time-of-Use) vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to…
CVE-2026-18508 ↗ M 4.4 tar A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory.
CVE-2026-89160 ↗ L 3.7 pcre2 PCRE2 before 10.48 has a pcre2_match out-of-bounds read during the PCRE2_MATCH_INVALID_UTF matching of an invalid UTF subject.
CVE-2026-89156 ↗ L 2.9 pcre2 PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.
CVE-2026-89162 ↗ L 2.9 pcre2 In PCRE2 before 10.48, pcre2_serialize_encode might disclose two bytes to an adversary, typically in a situation where the access available to the adversary is already unsafe.

These are the findings of tar, which ships every tool in this project. kapsl reports and gates; it never edits an image to clear a finding.

Composition

default + bash, gzip, bzip2, xz
runtime none — self-contained
composes bash, gzip, bzip2, xz

Some tools are only useful composed: a pip-installed CLI needs python as its runtime, bash pulls in coreutils. kapsl resolves that for you — -e git,python:flake8 composes explicitly.

Image

name tar
platforms
size 1 MB unpacked · 1 layer
base scratch
signed cosign · · public key
findings last changed

Sandbox boundary

tar

capabilities

rw

Filled is granted to every invocation; the rest need --cap at the point of use.

seccomp tier

per tool

default

The syscall filter applied to this tool's entry point. Tools sharing an image do not share a tier.

host paths mounted in

read-only unless noted

none

env passed through

1 forwarded

TAR_OPTIONS

Nothing else crosses in. No AWS_*, no SSH_AUTH_SOCK unless you ask.

env set by kapsl

none

none

per-subcommand

no overrides

Every invocation gets the same boundary. Where a tool needs more for one subcommand only, kapsl scopes it there rather than granting it everywhere.

Provenance

sbom amd64 ↗ arm64 ↗
attestation amd64 ↗ arm64 ↗
scan report amd64 ↗ arm64 ↗
vex amd64 ↗ arm64 ↗

Every image ships a full SBOM and a signed build attestation. Nothing here is a claim you have to take on trust.

11 findings across this project at latest. Counted once per advisory across every image the project builds.