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Debian Security Advisory 5593-1

Debian Linux Security Advisory 5593-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

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Debian Security Advisory DSA-5593-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
January 01, 2024 https://www.debian.org/security/faq


Package : linux
CVE ID : CVE-2023-6531 CVE-2023-6622 CVE-2023-6817 CVE-2023-6931
CVE-2023-51779 CVE-2023-51780 CVE-2023-51781 CVE-2023-51782

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information
leaks.

CVE-2023-6531

Jann Horn discovered a use-after-free flaw due to a race condition  
problem when the unix garbage collector's deletion of a SKB races  
with unix_stream_read_generic() on the socket that the SKB is  
queued on.

CVE-2023-6622

Xingyuan Mo discovered a flaw in the netfilter subsystem which may  
result in denial of service or privilege escalation for a user with  
the CAP_NET_ADMIN capability in any user or network namespace.

CVE-2023-6817

Xingyuan Mo discovered that a use-after-free in Netfilter's  
implementation of PIPAPO (PIle PAcket POlicies) may result in denial  
of service or potential local privilege escalation for a user with  
the CAP_NET_ADMIN capability in any user or network namespace.

CVE-2023-6931

Budimir Markovic reported a heap out-of-bounds write vulnerability  
in the Linux kernel's Performance Events system which may result in  
denial of service or privilege escalation.

CVE-2023-51779

It was discovered that a race condition in the Bluetooth subsystem  
in the bt_sock_ioctl handling may lead to a use-after-free.

CVE-2023-51780

It was discovered that a race condition in the ATM (Asynchronous  
Transfer Mode) subsystem may lead to a use-after-free.

CVE-2023-51781

It was discovered that a race condition in the Appletalk subsystem  
may lead to a use-after-free.

CVE-2023-51782

It was discovered that a race condition in the Amateur Radio X.25  
PLP (Rose) support may lead to a use-after-free.

For the stable distribution (bookworm), these problems have been fixed in
version 6.1.69-1.

We recommend that you upgrade your linux packages.

For the detailed security status of linux please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/linux

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]
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Ubuntu Security Notice 6604-1 - It was discovered that the ASUS HID driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service. Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information.

Ubuntu Security Notice USN-6603-1

Ubuntu Security Notice 6603-1 - It was discovered that the CIFS network file system implementation in the Linux kernel did not properly validate the server frame size in certain situation, leading to an out-of-bounds read vulnerability. An attacker could use this to construct a malicious CIFS image that, when operated on, could cause a denial of service or possibly expose sensitive information. Budimir Markovic, Lucas De Marchi, and Pengfei Xu discovered that the perf subsystem in the Linux kernel did not properly validate all event sizes when attaching new events, leading to an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice USN-6602-1

Ubuntu Security Notice 6602-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that a race condition existed in the Linux kernel when performing operations with kernel objects, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service or execute arbitrary code.

Debian Security Advisory 5594-1

Debian Linux Security Advisory 5594-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

CVE-2023-6622: cve-details

A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service.

Packet Storm: Latest News

Microsoft Windows TOCTOU Local Privilege Escalation