CVE-2025-9820
Discovered by AISLEPUBLISHEDCWE-121
Description
A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.
CVSS Base Scores
CVSS v3.1(Primary)
4.0CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Enterprise Linux 10 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Enterprise Linux 10 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Enterprise Linux 10 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Enterprise Linux 10 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Enterprise Linux 10 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Enterprise Linux 10 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Enterprise Linux 10 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Enterprise Linux 10 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat Enterprise Linux 8 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Enterprise Linux 8 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Enterprise Linux 8 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Enterprise Linux 8 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Enterprise Linux 8 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Enterprise Linux 8 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Enterprise Linux 8 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Enterprise Linux 8 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Enterprise Linux 8 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat Enterprise Linux 9 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Enterprise Linux 9 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Enterprise Linux 9 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Enterprise Linux 9 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Enterprise Linux 9 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Enterprise Linux 9 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Enterprise Linux 9 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Enterprise Linux 9 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat Ceph Storage 8 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Ceph Storage 8 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Ceph Storage 8 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Ceph Storage 8 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Ceph Storage 8 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Ceph Storage 8 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Ceph Storage 8 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Ceph Storage 8 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Ceph Storage 8 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat Insights proxy 1.5 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Insights proxy 1.5 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Insights proxy 1.5 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Insights proxy 1.5 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Insights proxy 1.5 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Insights proxy 1.5 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Insights proxy 1.5 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Insights proxy 1.5 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Insights proxy 1.5 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat Update Infrastructure 5 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Update Infrastructure 5 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Update Infrastructure 5 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Update Infrastructure 5 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Update Infrastructure 5 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Update Infrastructure 5 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Update Infrastructure 5 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Update Infrastructure 5 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Update Infrastructure 5 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat Enterprise Linux 6 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Enterprise Linux 6 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Enterprise Linux 6 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Enterprise Linux 6 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Enterprise Linux 6 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Enterprise Linux 6 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Enterprise Linux 6 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Enterprise Linux 6 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Enterprise Linux 6 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat Enterprise Linux 7 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat Enterprise Linux 7 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat Enterprise Linux 7 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat Enterprise Linux 7 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat Enterprise Linux 7 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat Enterprise Linux 7 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat Enterprise Linux 7 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat Enterprise Linux 7 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat Enterprise Linux 7 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | 0:3.8.10-3.el10_1 | unaffected |
| Red Hat | Red Hat OpenShift Container Platform 4 | 0:3.6.16-8.el8_10.5 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | 0:3.8.3-10.el9_7 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | sha256:a0f0f9770911d6a0fc522f304942765059643193e95c9f6e505462f98a979db1 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | sha256:86431fdb1ba7fa0cbc8e82cc5fe518b7c0946b8847991fc95604b1d1cfd45e06 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | sha256:200c27e9b396276bd505c6b41127ac5eb1d94d620172cb818ae733f2a21ac524 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | sha256:d98fd3fe5f5f9acd0efae7db19b61b864be1eb2fbe2586a1b6be2429fa2cc7a3 | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | sha256:2c50c87906a1abebf427a70f401c409f1258cb55d2096f517db870ec991cfd7f | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | sha256:5f1fbf66fb349a7baf066a1216d39989c3b89f18ec5108b96d9643baf4856778 | — |
References
- https://access.redhat.com/errata/RHSA-2026:3477
- https://access.redhat.com/errata/RHSA-2026:4188
- https://access.redhat.com/errata/RHSA-2026:4655
- https://access.redhat.com/errata/RHSA-2026:4943
- https://access.redhat.com/errata/RHSA-2026:5585
- https://access.redhat.com/errata/RHSA-2026:5606
- https://access.redhat.com/security/cve/CVE-2025-9820
- https://bugzilla.redhat.com/show_bug.cgi?id=2392528
- https://gitlab.com/gnutls/gnutls/-/commit/1d56f96f6ab5034d677136b9d50b5a75dff0faf5
- https://gitlab.com/gnutls/gnutls/-/issues/1732
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2025-11-18