-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-5257-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso October 18, 2022 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2021-4037 CVE-2022-0171 CVE-2022-1184 CVE-2022-2602 CVE-2022-2663 CVE-2022-3061 CVE-2022-3176 CVE-2022-3303 CVE-2022-20421 CVE-2022-39188 CVE-2022-39842 CVE-2022-40307 CVE-2022-41674 CVE-2022-42719 CVE-2022-42720 CVE-2022-42721 CVE-2022-42722 Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2021-4037 Christian Brauner reported that the inode_init_owner function for the XFS filesystem in the Linux kernel allows local users to create files with an unintended group ownership allowing attackers to escalate privileges by making a plain file executable and SGID. CVE-2022-0171 Mingwei Zhang reported that a cache incoherence issue in the SEV API in the KVM subsystem may result in denial of service. CVE-2022-1184 A flaw was discovered in the ext4 filesystem driver which can lead to a use-after-free. A local user permitted to mount arbitrary filesystems could exploit this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation. CVE-2022-2602 A race between handling an io_uring request and the Unix socket garbage collector was discovered. An attacker can take advantage of this flaw for local privilege escalation. CVE-2022-2663 David Leadbeater reported flaws in the nf_conntrack_irc connection-tracking protocol module. When this module is enabled on a firewall, an external user on the same IRC network as an internal user could exploit its lax parsing to open arbitrary TCP ports in the firewall, to reveal their public IP address, or to block their IRC connection at the firewall. CVE-2022-3061 A flaw was discovered in the i740 driver which may result in denial of service. This driver is not enabled in Debian's official kernel configurations. CVE-2022-3176 A use-after-free flaw was discovered in the io_uring subsystem which may result in local privilege escalation to root. CVE-2022-3303 A race condition in the snd_pcm_oss_sync function in the sound subsystem in the Linux kernel due to improper locking may result in denial of service. CVE-2022-20421 A use-after-free vulnerability was discovered in the binder_inc_ref_for_node function in the Android binder driver. On systems where the binder driver is loaded, a local user could exploit this for privilege escalation. CVE-2022-39188 Jann Horn reported a race condition in the kernel's handling of unmapping of certain memory ranges. When a driver created a memory mapping with the VM_PFNMAP flag, which many GPU drivers do, the memory mapping could be removed and freed before it was flushed from the CPU TLBs. This could result in a page use-after- free. A local user with access to such a device could exploit this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation. CVE-2022-39842 An integer overflow was discovered in the pxa3xx-gcu video driver which could lead to a heap out-of-bounds write. This driver is not enabled in Debian's official kernel configurations. CVE-2022-40307 A race condition was discovered in the EFI capsule-loader driver, which could lead to use-after-free. A local user permitted to access this device (/dev/efi_capsule_loader) could exploit this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation. However, this device is normally only accessible by the root user. CVE-2022-41674, CVE-2022-42719, CVE-2022-42720, CVE-2022-42721, CVE-2022-42722 Soenke Huster discovered several vulnerabilities in the mac80211 subsystem triggered by WLAN frames which may result in denial of service or the execution or arbitrary code. For the stable distribution (bullseye), these problems have been fixed in version 5.10.149-1. 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: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAmNPFS5fFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0Q8oBAAh2sxVENkXNYsl1xX4jU6yCJ/vLuG8HklJE+cChdxFSwjrz5fE9Y36viE 4M08WedXuAuSRKT9pCvPvvv+YNdjUaTIMHHLxCbWmWPfPboz6GRqk0RFEKABZe1t M5W9CqEYgp9LRTPyOYFoOpMSnWQ1a3XyhLHSl2hUX9bw1GC5ovCKpUNoZ+FE0v90 v9uqM+8zdXmxe1tbAmjndCYzOoT9vaqqlU5OAaWQpqozRsa8Rv6/XiJ6mMVk8DUU QFLoGVqoIeWRc6CYSzzNeAVOX8v4vScILk/FW1HW/WfhrqCFBwEORo4jz/2o49HN 4h/HxGlWtj/yiCUvRMR6RkQGJJOEr9vQa8Boe9z5rLzCQAPDZplp9iSu1/sdSqtV C1wJNaTfB8di1vwEUAra/bHTty7rUwc0rPBTmKFxwnPW0IOyX4Nsb4lSsbSRtnHm +80T8+WFWT0CMKpwOkP4GzwlZ9h7MeAKHwZpyyHc+84IS4RKl0SDkaHY/aOQ9pYB vrl2CV+hSxw/YzpeF9w56LQ6YWzO27NmUid0nw+YFcSc0D35hvsFo+AsQ4Kkdc4p 94SkSq7zuhtdZDh1D5ZtBDfryxG2xWzgAEKcCyNTHW19iZO50K+YHzLbWzom9J6h hI8jM/zBEGvZD8EdM3Vc710+QF6Yie1zOLNDRxNj0Zfu+0k1uXo=gJNm -----END PGP SIGNATURE-----