The log_prefix function in kernel/printk.c in the Linux kernel 3.x before 3.4.33 does not properly remove a prefix string from a syslog header, which allows local users to cause a denial of service (buffer overflow and system crash) by leveraging /dev/kmsg write access and triggering a call_console_drivers function call.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000561 advisory.

    The log_prefix function in kernel/printk.c in the Linux kernel 3.x before 3.4.33 does not properly remove     a prefix string from a syslog header, which allows local users to cause a denial of service (buffer     overflow and system crash) by leveraging /dev/kmsg write access and triggering a call_console_drivers     function call.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002526 advisory.

    The log_prefix function in kernel/printk.c in the Linux kernel 3.x before 3.4.33 does not properly remove     a prefix string from a syslog header, which allows local users to cause a denial of service (buffer     overflow and system crash) by leveraging /dev/kmsg write access and triggering a call_console_drivers     function call.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002522 advisory.

    The log_prefix function in kernel/printk.c in the Linux kernel 3.x before 3.4.33 does not properly remove     a prefix string from a syslog header, which allows local users to cause a denial of service (buffer     overflow and system crash) by leveraging /dev/kmsg write access and triggering a call_console_drivers     function call.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2013:0566 advisory.

    The kernel-rt packages contain the Linux kernel, the core of any Linux     operating system.

    This update fixes the following security issues:

    * A buffer overflow flaw was found in the way UTF-8 characters were     converted to UTF-16 in the utf8s_to_utf16s() function of the Linux kernel's     FAT file system implementation. A local user able to mount a FAT file     system with the utf8=1 option could use this flaw to crash the system or,     potentially, to escalate their privileges. (CVE-2013-1773, Important)

    * It was found that the RHSA-2012:0333 update did not correctly fix the     CVE-2011-4131 issue. A malicious Network File System version 4 (NFSv4)     server could return a crafted reply to a GETACL request, causing a denial     of service on the client. (CVE-2012-2375, Moderate)

    * A memory disclosure flaw was found in the way the load_script() function     in the binfmt_script binary format handler handled excessive recursions. A     local, unprivileged user could use this flaw to leak kernel stack memory to     user-space by executing specially-crafted scripts. (CVE-2012-4530, Low)

    * A flaw was found in the way file permission checks for the /dev/kmsg     file were performed in restricted root environments (for example, when     using a capability-based security model). A local user able to write to     this file could cause a denial of service. (CVE-2013-1772, Low)

    The CVE-2012-2375 issue was discovered by Jian Li of Red Hat.

    This update also fixes multiple bugs. Documentation for these changes will     be available shortly from the Technical Notes document linked to in the     References section.

    Users should upgrade to these updated packages, which upgrade the kernel-rt     kernel to version kernel-rt-3.6.11-rt28, correct these issues, and fix the     bugs noted in the Red Hat Enterprise MRG 2 Technical Notes. The system must     be rebooted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-2546 advisory.

    - sctp: deal with multiple COOKIE_ECHO chunks (Max Matveev) [Orabug: 17371930] {CVE-2013-2206}
    - Bluetooth: L2CAP - Fix info leak via getsockname() (Mathias Krause) [Orabug: 17371037] {CVE-2012-6544}
    - Bluetooth: HCI - Fix info leak via getsockname() (Mathias Krause) [Orabug: 17370887] {CVE-2012-6544}
    - Bluetooth: HCI - Fix info leak in getsockopt(HCI_FILTER) (Mathias Krause) [Orabug: 17371061]     {CVE-2012-6544}
    - sctp: Use correct sideffect command in duplicate cookie handling (Vlad Yasevich) [Orabug: 17371114]     {CVE-2013-2206}
    - af_key: initialize satype in key_notify_policy_flush() (Nicolas Dichtel) [Orabug: 17370761]     {CVE-2013-2237}
    - net: fix incorrect credentials passing (Linus Torvalds) [Orabug: 16836975] {CVE-2013-1979}
    - tg3: fix length overflow in VPD firmware parsing (Kees Cook) [Orabug: 16836958] {CVE-2013-1929}
    - USB: cdc-wdm: fix buffer overflow (Oliver Neukum) [Orabug: 16836943] {CVE-2013-1860}
    - ext3: Fix format string issues (Lars-Peter Clausen) [Orabug: 16836934] {CVE-2013-1848}
    - perf: Treat attr.config as u64 in perf_swevent_init() (Tommi Rantala) [Orabug: 16808734] {CVE-2013-2094}
    - ipv6: ip6_append_data_mtu did not care about pmtudisc and frag_size (Hannes Frederic Sowa) [Orabug:
    17296421] {CVE-2013-4163}
    - af_key: fix info leaks in notify messages (Mathias Krause) [Orabug: 17237752] {CVE-2013-2234}
    - drivers/cdrom/cdrom.c: use kzalloc() for failing hardware (Jonathan Salwan) [Orabug: 17230700]     {CVE-2013-2164}
    - ipv6: ip6_sk_dst_check() must not assume ipv6 dst (Eric Dumazet) [Orabug: 17215196] {CVE-2013-2232}
    - block: do not pass disk names as format strings (Kees Cook) [Orabug: 17230067] {CVE-2013-2851}
    - libceph: Fix NULL pointer dereference in auth client code (Tyler Hicks) [Orabug: 17230100]     {CVE-2013-1059}
    - xen/blkback: Check device permissions before allowing OP_DISCARD (Konrad Rzeszutek Wilk)     {CVE-2013-2140}
    - xen/blkback: Check device permissions before allowing OP_DISCARD (Konrad Rzeszutek Wilk)     {CVE-2013-2140}
    - dcbnl: fix various netlink info leaks (Mathias Krause) [Orabug: 17024912] {CVE-2013-2634}
    - b43: stop format string leaking into error msgs (Kees Cook) [Orabug: 16992869] {CVE-2013-2852}
    - Bluetooth: RFCOMM - Fix missing msg_namelen update in rfcomm_sock_recvmsg() (Mathias Krause) [Orabug:
    16888256] {CVE-2013-3225}
    - Bluetooth: fix possible info leak in bt_sock_recvmsg() (Mathias Krause) [Orabug: 16888251]     {CVE-2013-3224}
    - atm: update msg_namelen in vcc_recvmsg() (Mathias Krause) [Orabug: 16888219] {CVE-2013-3222}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
290609	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000561)	Nessus	Unity Linux Local Security Checks	medium
287652	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002526)	Nessus	Unity Linux Local Security Checks	medium
284991	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002522)	Nessus	Unity Linux Local Security Checks	medium
76658	RHEL 6 : kernel-rt (RHSA-2013:0566)	Nessus	Red Hat Local Security Checks	high
69942	Oracle Linux 5 / 6 : Unbreakable Enterprise Kernel (ELSA-2013-2546)	Nessus	Oracle Linux Local Security Checks	medium
66344	SuSE 11.2 Security Update : Linux kernel (SAT Patch Numbers 7667 / 7669 / 7675)	Nessus	SuSE Local Security Checks	high

Detections

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CVE-2013-1772

medium

Tenable Plugins

medium

medium

medium

high

medium

high