Debian Long Term Support / LTS Security Information / 2022 / Security Information -- DLA-3173-1 linux-5.10

Debian Security Advisory

DLA-3173-1 linux-5.10 -- LTS security update

Date Reported:

01 Nov 2022

Affected Packages:

linux-5.10

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 1017425, Bug 1019248.
In Mitre's CVE dictionary: CVE-2021-4037, CVE-2022-0171, CVE-2022-1184, CVE-2022-1679, CVE-2022-2153, CVE-2022-2602, CVE-2022-2663, CVE-2022-2905, CVE-2022-3028, CVE-2022-3061, CVE-2022-3176, CVE-2022-3303, CVE-2022-3586, CVE-2022-3621, CVE-2022-3625, CVE-2022-3629, CVE-2022-3633, CVE-2022-3635, CVE-2022-3646, CVE-2022-3649, CVE-2022-20421, CVE-2022-20422, CVE-2022-39188, CVE-2022-39190, CVE-2022-39842, CVE-2022-40307, CVE-2022-41222, CVE-2022-41674, CVE-2022-42719, CVE-2022-42720, CVE-2022-42721, CVE-2022-42722, CVE-2022-43750.

More information:

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-2022-1679

  The syzbot tool found a race condition in the ath9k_htc driver which can lead to a use-after-free. This might be exploitable to cause a denial service (crash or memory corruption) or possibly for privilege escalation.

• CVE-2022-2153

  kangel reported a flaw in the KVM implementation for x86 processors which could lead to a null pointer dereference. A local user permitted to access /dev/kvm could exploit this to cause a denial of service (crash).

• 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-2022-2905

  Hsin-Wei Hung reported a flaw in the eBPF verifier which can lead to an out-of-bounds read. If unprivileged use of eBPF is enabled, this could leak sensitive information. This was already disabled by default, which would fully mitigate the vulnerability.

• CVE-2022-3028

  Abhishek Shah reported a race condition in the AF_KEY subsystem, which could lead to an out-of-bounds write or read. A local user could exploit this to cause a denial of service (crash or memory corruption), to obtain sensitive information, or possibly for privilege escalation.

• 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-2022-3586 (ZDI-22-1452)

  The Zero Day Initiative reported a flaw in the sch_sfb network scheduler, which may lead to a use-after-free and leak of sensitive information from the kernel.

• CVE-2022-3621, CVE-2022-3646

  The syzbot tool found flaws in the nilfs2 filesystem driver which can lead to a null pointer dereference or memory leak. A user permitted to mount arbitrary filesystem images could use these to cause a denial of service (crash or resource exhaustion).

• CVE-2022-3625

  A flaw was discovered in the devlink subsystem which can lead to a use-after-free. The security impact of this is unclear.

• CVE-2022-3629

  The syzbot tool found a memory leak in the Virtual Socket Protocol implementation. A local user could exploit this to cause a denial of service (resource exhaustion).

• CVE-2022-3633

  The Linux Verification Center found a memory leak in the SAE J1939 protocol implementation. A local user could exploit this to cause a denial of service (resource exhaustion).

• CVE-2022-3635

  Several race conditions were discovered in the idt77252 ATM driver, which can lead to a use-after-free if the module is removed. The security impact of this is unclear.

• CVE-2022-3649

  The syzbot tool found flaws in the nilfs2 filesystem driver which can lead to a use-after-free. A user permitted to mount arbitrary filesystem images could use these to cause a denial of service (crash or memory corruption) or possibly for privilege escalation.

• 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-2022-20422

  A race condition was discovered in the instruction emulator for 64-bit Arm systems. Concurrent changes to the sysctls that control the emulator could result in a null pointer dereference. The security impact of this is unclear.

• 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-2022-39190

  Gwangun Jung reported a flaw in the nf_tables subsystem. A local user could exploit this to cause a denial of service (crash).

• 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-2022-41222

  A race condition was discovered in the memory management subsystem that can lead to stale TLB entries. A local user could exploit this to cause a denial of service (memory corruption or crash), information leak, or privilege escalation.

• 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 of arbitrary code.

• CVE-2022-43750

  The syzbot tool found that the USB monitor (usbmon) driver allowed user-space programs to overwrite the driver's data structures. A local user permitted to access a USB monitor device could exploit this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation. However, by default only the root user can access such devices.

For Debian 10 buster, these problems have been fixed in version 5.10.149-2~deb10u1. This update also fixes a regression for some older 32-bit PCs (bug #1017425), and enables the i10nm_edac driver (bug #1019248). It additionally includes many more bug fixes from stable updates 5.10.137-5.10.149 inclusive.

We recommend that you upgrade your linux-5.10 packages.

For the detailed security status of linux-5.10 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux-5.10

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