SB2024072923 - Ubuntu update for linux

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) Code Injection (CVE-ID: CVE-2024-25742)

The vulnerability allows a malicious hypervisor to escalate privileges on the system.

The vulnerability exists due to improper input validation when handling interrupts. A malicious hypervisor can inject interrupt 0x80, which is used by Linux for legacy 32-bit system calls, and arbitrarily change the value stored in EAX while a SEV VM is running.

2) Use-after-free (CVE-ID: CVE-2024-26886)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the bt_sock_recvmsg() and bt_sock_ioctl() functions in net/bluetooth/af_bluetooth.c. A local user can escalate privileges on the system.

3) Out-of-bounds read (CVE-ID: CVE-2024-26952)

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to an out-of-bounds read error within the smb2_tree_connect(), smb2_open(), smb2_query_dir(), smb2_get_ea(), smb2_set_info_file(), smb2_set_info(), fsctl_pipe_transceive() and smb2_ioctl() functions in fs/smb/server/smb2pdu.c, within the smb2_get_data_area_len() function in fs/smb/server/smb2misc.c. A local user can execute arbitrary code.

4) Use-after-free (CVE-ID: CVE-2023-52752)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the seq_printf() and spin_unlock() functions in fs/smb/client/cifs_debug.c. A local user can escalate privileges on the system.

5) Incorrect calculation (CVE-ID: CVE-2024-27017)

The vulnerability allows a local user to manipulate data.

The vulnerability exists due to incorrect calculation within the nft_pipapo_walk() function in net/netfilter/nft_set_pipapo.c, within the nft_map_deactivate(), nf_tables_bind_set(), nft_map_activate(), nf_tables_dump_set(), nft_set_flush() and nf_tables_check_loops() functions in net/netfilter/nf_tables_api.c. A local user can manipulate data.

6) Out-of-bounds write (CVE-ID: CVE-2024-36016)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the gsm0_receive() function in drivers/tty/n_gsm.c. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-6923-1