Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Hardened Images | unaffected 2.42.2-1.hum1 before * |
| Red Hat / Red Hat Enterprise Linux 10 | affected |
| Red Hat / Red Hat Enterprise Linux 7 | affected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Enterprise Linux 9 | affected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
| Red Hat / Red Hat OpenShift Container Platform 4 | affected |
CWE
CWE-416
References
- https://access.redhat.com/errata/RHSA-2026:26573
- https://access.redhat.com/security/cve/CVE-2026-13595
- https://bugzilla.redhat.com/show_bug.cgi?id=2494101
- https://github.com/util-linux/util-linux/commit/c0186f14fbdb02f64c8e0ba701ce727ea764ff4c
ADP enrichment
No English description supplied.
No references supplied.