CVE-2026-13595

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Source
https://cve.org/CVERecord?id=CVE-2026-13595
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-13595.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-13595
Downstream
Related
Published
2026-06-29T08:06:09.059Z
Modified
2026-08-27T18:26:00.893037466Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS Calculator
Summary
Util-linux: util-linux: heap use-after-free in libblkid nested partition probing
Details

A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use-after-free read. An attacker who can present a crafted block device image (for example, via USB insertion or a loop-mounted disk image) can trigger this flaw without user interaction, as libblkid is invoked automatically by udev/udisks as root on block-device hot-plug events. This could lead to limited information disclosure or denial of service.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13595.json",
    "cwe_ids": [
        "CWE-416"
    ],
    "cna_assigner": "redhat"
}
References

Affected packages

Git / github.com/util-linux/util-linux

Affected ranges

Type
GIT
Repo
https://github.com/util-linux/util-linux
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f44509230b9f8224993b8c6157f85888359a64e1
Fixed
c0186f14fbdb02f64c8e0ba701ce727ea764ff4c
Database specific
Show details 
{
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.42.2"
        }
    ]
}

Affected versions

v2.*
v2.10f
v2.10m
v2.10s
v2.11b
v2.11f
v2.11m
v2.11n
v2.11o
v2.11q
v2.11r
v2.11t
v2.11u
v2.11v
v2.11w
v2.11x
v2.11y
v2.12
v2.12a
v2.12b
v2.12d
v2.12h
v2.12i
v2.12j
v2.12k
v2.12l
v2.12m
v2.12o
v2.12p
v2.12pre
v2.12q
v2.12q-pre1
v2.12q-pre2
v2.12r
v2.12r-pre1
v2.13
v2.13-pre1
v2.13-pre2
v2.13-pre3
v2.13-pre4
v2.13-pre5
v2.13-pre6
v2.13-pre7
v2.13-rc1
v2.13-rc2
v2.13-rc3
v2.14
v2.14-rc1
v2.14-rc2
v2.14-rc3
v2.15
v2.15-rc1
v2.15-rc2
v2.16
v2.16-rc1
v2.16-rc2
v2.17
v2.17-rc1
v2.17-rc2
v2.17-rc3
v2.18
v2.18-rc1
v2.18-rc2
v2.19
v2.19-rc1
v2.19-rc2
v2.19-rc3
v2.2
v2.20
v2.20-rc1
v2.20-rc2
v2.21
v2.21-rc1
v2.21-rc2
v2.22
v2.22-rc1
v2.22-rc2
v2.23
v2.23-rc1
v2.23-rc2
v2.24
v2.24-rc1
v2.24-rc2
v2.25
v2.25-rc1
v2.25-rc2
v2.26
v2.26-rc1
v2.26-rc2
v2.27
v2.27-rc1
v2.27-rc2
v2.28
v2.28-rc1
v2.28-rc2
v2.29
v2.29-rc1
v2.29-rc2
v2.30
v2.30-rc1
v2.30-rc2
v2.31
v2.31-rc1
v2.31-rc2
v2.32
v2.32-rc1
v2.32-rc2
v2.33
v2.33-rc1
v2.33-rc2
v2.34
v2.34-rc1
v2.34-rc2
v2.35
v2.35-rc1
v2.35-rc2
v2.36
v2.36-rc1
v2.36-rc2
v2.37
v2.37-rc1
v2.37-rc2
v2.38
v2.38-rc1
v2.38-rc2
v2.38-rc3
v2.38-rc4
v2.39
v2.39-rc1
v2.39-rc2
v2.39-rc3
v2.40-rc1
v2.41-devel
v2.41-start
v2.42
v2.42-rc1
v2.42-rc2
v2.42-start
v2.42.1
v2.43-devel
v2.5
v2.7.1
v2.8
v2.9i
v2.9v

Database specific

vanir_signatures 
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        "signature_version": "v1",
        "target": {
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        "signature_type": "Line"
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    {
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        "deprecated": false,
        "source": "https://github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c",
        "digest": {
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        "signature_version": "v1",
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        },
        "signature_type": "Function"
    },
    {
        "id": "CVE-2026-13595-e7a2aa2d",
        "target": {
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            "file": "libblkid/src/partitions/partitions.c"
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        "signature_type": "Function"
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    {
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        "deprecated": false,
        "source": "https://github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c",
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        "target": {
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            "file": "libblkid/src/partitions/partitions.c"
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        "signature_type": "Function"
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]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-13595.json"
vanir_signatures_modified 
"2026-08-24T03:59:10Z"