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CVE-2026-111581— Libblockdev: libblockdev: argument injection in ntfs/vfat label-setting helpers via udisks2 setlabel() d-bus method

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
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 libblockdev 中发现一个安全缺陷。 和 函数将调用方提供的卷标值作为裸位置参数传递给 和 工具，既未使用“选项终止符”（end-of-options separator），也未对以连字符（-）开头的值进行输入验证。这导致以连字符开头的卷标可能被生成的工具解释为命令行标志，从而绕过安全检查或引发非预期操作。该漏洞可由未授权本地用户通过 的 D-Bus 方法触发，且无需管理员身份验证。

CVSS 3.3 · Low

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-111581

Vulnerability Information
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Vulnerability Title
Libblockdev: libblockdev: argument injection in ntfs/vfat label-setting helpers via udisks2 setlabel() d-bus method
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in libblockdev. The bd_fs_ntfs_set_label() and bd_fs_vfat_set_label() functions pass caller-supplied label values as bare positional arguments to the ntfslabel and fatlabel utilities without end-of-options separators or input validation for values beginning with a dash. This allows a label starting with '-' to be interpreted as a command-line flag by the spawned tool, potentially bypassing safety checks or causing unintended operations. This is reachable by unprivileged local users through the udisks2 Filesystem.SetLabel() D-Bus method without administrator authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-111581

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III. Intelligence Information for CVE-2026-111581

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Vendor Advisories for CVE-2026-111581 (2)

Same Patch Batch · Red Hat · 2026-10-16 · 15 CVEs total

CVE-2026-104715 7.8 HIGH Cifs-utils: mount.cifs credential-file option injection allows local privilege boundary by
CVE-2026-105958 7.5 HIGH Spice-server: spice: heap oob read/write via unchecked migration data offsets
CVE-2026-105959 7.5 HIGH Spice-server: spice: heap buffer overflow via glz dictionary max_encoders integer truncati
CVE-2026-62439 7.0 HIGH Gimp: gimp: file-pvr plug-in pvr file parsing integer overflow heap-based buffer overflow
CVE-2026-89085 6.6 MEDIUM Parted: parted: heap-based buffer overflow via crafted fat32 filesystem image
CVE-2026-111802 6.6 MEDIUM Nautilus: nautilus: arbitrary file deletion via trash symlink
CVE-2026-85231 6.5 MEDIUM Libtirpc: libtirpc: denial of service via unbounded memory allocation during rpcsec_gss de
CVE-2026-62438 6.1 MEDIUM Gimp: gimp: paa integer overflow out-of-bounds read
CVE-2026-111555 6.0 MEDIUM Luksmeta: missing slot-range validation permits out-of-gap device i/o
CVE-2026-89096 5.9 MEDIUM Nfs-utils: nfs-utils: denial of service via memory leak in rpc.statd
CVE-2026-89088 5.5 MEDIUM Parted: parted: denial of service via heap buffer overflow during fat16 resize
CVE-2026-89098 5.5 MEDIUM Nfs-utils: nfs-utils: denial of service via assertion failure in fsidd
CVE-2026-85977 5.3 MEDIUM Libtirpc: libtirpc: denial of service via unbounded memory allocation during portmapper re
CVE-2026-17591 3.6 LOW Libarchive: libarchive: use-after-free via aliased mac metadata copy

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-88

V. Comments for CVE-2026-111581

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