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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:257971
[Rus]
Version
3
Class
vulnerability
ALTXid
491139
Language
English
Severity
Medium
Title
SLES/SLED/openSUSE -- vulnerability in Linux kernel (CVE-2023-52564)
Description
The vulnerability was found in Linux kernel.
Family
unix
Platform
openSUSE Leap 15.4
openSUSE Leap 15.5
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP 15
Product
Linux kernel
Reference
VENDOR: SUSE-SU-2024:1480-1
VENDOR: SUSE-SU-2024:1480-1
Id:
SUSE-SU-2024:1480-1
Reference:
https://www.suse.com/support/update/announcement/2024/suse-su-20241480-1/
VENDOR: SUSE-SU-2024:1466-1
VENDOR: SUSE-SU-2024:1466-1
Id:
SUSE-SU-2024:1466-1
Reference:
https://www.suse.com/support/update/announcement/2024/suse-su-20241466-1/
VENDOR: SUSE-SU-2024:1332-2
VENDOR: SUSE-SU-2024:1332-2
Id:
SUSE-SU-2024:1332-2
Reference:
https://www.suse.com/support/update/announcement/2024/suse-su-20241332-2/
VENDOR: SUSE-SU-2024:1332-1
VENDOR: SUSE-SU-2024:1332-1
Id:
SUSE-SU-2024:1332-1
Reference:
https://www.suse.com/support/update/announcement/2024/suse-su-20241332-1/
VENDOR: SUSE-SU-2024:1322-2
VENDOR: SUSE-SU-2024:1322-2
Id:
SUSE-SU-2024:1322-2
Reference:
https://www.suse.com/support/update/announcement/2024/suse-su-20241322-2/
CVE: CVE-2023-52564
CVE: CVE-2023-52564
Id:
CVE-2023-52564
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52564
Comment
: In the Linux kernel, the following vulnerability has been resolved: Revert "tty: n_gsm: fix UAF in gsm_cleanup_mux" This reverts commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239. The commit above is reverted as it did not solve the original issue. gsm_cleanup_mux() tries to free up the virtual ttys by calling gsm_dlci_release() for each available DLCI. There, dlci_put() is called to decrease the reference counter for the DLCI via tty_port_put() which finally calls gsm_dlci_free(). This already clears the pointer which is being checked in gsm_cleanup_mux() before calling gsm_dlci_release(). Therefore, it is not necessary to clear this pointer in gsm_cleanup_mux() as done in the reverted commit. The commit introduces a null pointer dereference: <TASK> ? __die+0x1f/0x70 ? page_fault_oops+0x156/0x420 ? search_exception_tables+0x37/0x50 ? fixup_exception+0x21/0x310 ? exc_page_fault+0x69/0x150 ? asm_exc_page_fault+0x26/0x30 ? tty_port_put+0x19/0xa0 gsmtty_cleanup+0x29/0x80 [n_gsm] release_one_tty+0x37/0xe0 process_one_work+0x1e6/0x3e0 worker_thread+0x4c/0x3d0 ? __pfx_worker_thread+0x10/0x10 kthread+0xe1/0x110 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2f/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 </TASK> The actual issue is that nothing guards dlci_put() from being called multiple times while the tty driver was triggered but did not yet finished calling gsm_dlci_free().
References:
https://git.kernel.org/stable/c/6d5c8862932d31a810b6545f7d69ecc124402c6e ()
https://git.kernel.org/stable/c/a48d2bcd23f2c98d575bc2f9b7a3fbd16aeea9eb ()
https://git.kernel.org/stable/c/c61d0b87a7028c2c10faffc524d748334c7b9827 ()
https://git.kernel.org/stable/c/2bff660e0ff349dee84dc4f6f6d10da4497f5b28 ()
https://git.kernel.org/stable/c/29346e217b8ab8a52889b88f00b268278d6b7668 ()
http://www.openwall.com/lists/oss-security/2024/04/11/9 ()
http://www.openwall.com/lists/oss-security/2024/04/11/11 ()
http://www.openwall.com/lists/oss-security/2024/04/12/2 ()
http://www.openwall.com/lists/oss-security/2024/04/12/1 ()
VENDOR: SUSE-SU-2024:1322-1
VENDOR: SUSE-SU-2024:1322-1
Id:
SUSE-SU-2024:1322-1
Reference:
https://www.suse.com/support/update/announcement/2024/suse-su-20241322-1/
VENDOR: SUSE-SU-2024:1321-1
VENDOR: SUSE-SU-2024:1321-1
Id:
SUSE-SU-2024:1321-1
Reference:
https://www.suse.com/support/update/announcement/2024/suse-su-20241321-1/
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