A stack overflow vulnerability was found in gfs2-utils. The hash table traversal code in metawalk.c uses alloca() with an exponentially-derived size from the untrusted on-disk di_depth field without bounds validation. A crafted GFS2 filesystem image with a large di_depth value causes stack exhaustion and a denial of service when processed by fsck.gfs2, gfs2_edit, or savemeta.
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Affected Vendors & Products
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History
Fri, 04 Sep 2026 19:30:00 +0000
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ssvc
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Fri, 04 Sep 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Thu, 03 Sep 2026 16:00:00 +0000
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Redhat gfs2-utils
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| Vendors & Products |
Redhat gfs2-utils
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Thu, 03 Sep 2026 12:45:00 +0000
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| Description | A stack overflow vulnerability was found in gfs2-utils. The hash table traversal code in metawalk.c uses alloca() with an exponentially-derived size from the untrusted on-disk di_depth field without bounds validation. A crafted GFS2 filesystem image with a large di_depth value causes stack exhaustion and a denial of service when processed by fsck.gfs2, gfs2_edit, or savemeta. | |
| Title | Gfs2-utils: gfs2-utils: stack overflow via alloca(1<<di_depth) in hash table traversal | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
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| Weaknesses | CWE-770 | |
| CPEs | cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-09-03T12:23:06.486Z
Updated: 2026-09-04T18:41:38.906Z
Reserved: 2026-08-05T08:51:19.852Z
Link: CVE-2026-71219
Updated: 2026-09-04T18:41:33.856Z
Status : Undergoing Analysis
Published: 2026-09-03T13:06:02.550
Modified: 2026-09-04T19:17:26.440
Link: CVE-2026-71219