14839 matches found
kernel: net: fix information leakage in /proc/net/ptype
In the Linux kernel, the following vulnerability has been resolved: net: fix information leakage in /proc/net/ptype In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new packettype added by this packet socket by...
kernel: tls: fix missing memory barrier in tls_init
In the Linux kernel, the following vulnerability has been resolved: tls: fix missing memory barrier in tlsinit In tlsinit, a write memory barrier is missing, and store-store reordering may cause NULL dereference in tlssetsockopt,getsockopt. CPU0 CPU1 ----- ----- // In tlsinit // In tlsctxcreate c...
kernel: af_unix: Fix data races in unix_release_sock/unix_stream_sendmsg
In the Linux kernel, the following vulnerability has been resolved: afunix: Fix data races in unixreleasesock/unixstreamsendmsg A data-race condition has been identified in afunix. In one data path, the write function unixreleasesock atomically writes to sk-skshutdown using WRITEONCE. However, on...
kernel: net/sched: act_skbmod: prevent kernel-infoleak
In the Linux kernel, the following vulnerability has been resolved: net/sched: actskbmod: prevent kernel-infoleak syzbot found that tcfskbmoddump was copying four bytes from kernel stack to user space 1. The issue here is that 'struct tcskbmod' has a four bytes hole. We need to clear the structur...
kernel: net: core: reject skb_copy(_expand) for fraglist GSO skbs
In the Linux kernel, the following vulnerability has been resolved: net: core: reject skbcopyexpand for fraglist GSO skbs SKBGSOFRAGLIST skbs must not be linearized, otherwise they become invalid. Return NULL if such an skb is passed to skbcopy or skbcopyexpand, in order to prevent a crash on a...
kernel: tcp: properly terminate timers for kernel sockets
In the Linux kernel, the following vulnerability has been resolved: tcp: properly terminate timers for kernel sockets We had various syzbot reports about tcp timers firing after the corresponding netns has been dismantled. Fortunately Josef Bacik could trigger the issue more often, and could test...
kernel: tcp: Use refcount_inc_not_zero() in tcp_twsk_unique().
A use-after-free flaw was found in the Linux kernel’s TCP protocol in how a local user triggers a complex race condition during connection to the socket. This flaw allows a local user to crash or potentially escalate their privileges on the system...
kernel: ipv4: Fix uninit-value access in __ip_make_skb()
In the Linux kernel, the following vulnerability has been resolved: ipv4: Fix uninit-value access in ipmakeskb KMSAN reported uninit-value access in ipmakeskb 1. ipmakeskb tests HDRINCL to know if the skb has icmphdr. However, HDRINCL can cause a race condition. If calling setsockopt2 with...
kernel: atl1c: Work around the DMA RX overflow issue
In the Linux kernel, the following vulnerability has been resolved: atl1c: Work around the DMA RX overflow issue This is based on alx driver commit 881d0327db37 "net: alx: Work around the DMA RX overflow issue". The alx and atl1c drivers had RX overflow error which was why a custom allocator was...
kernel: net: fix information leakage in /proc/net/ptype
In the Linux kernel, the following vulnerability has been resolved: net: fix information leakage in /proc/net/ptype In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new packettype added by this packet socket by...
kernel: inet: inet_defrag: prevent sk release while still in use
In the Linux kernel, the following vulnerability has been resolved: inet: inetdefrag: prevent sk release while still in use iplocalout and other functions can pass skb-sk as function argument. If the skb is a fragment and reassembly happens before such function call returns, the sk must not be...
kernel: TIPC message reassembly use-after-free remote code execution vulnerability
A use-after-free UAF flaw exists in the Linux Kernel within the reassembly of fragmented TIPC messages, specifically in the tipcbufappend function. The issue results due to a lack of checks in the error handling cleanup and can trigger a UAF on "struct skbuff", which may lead to remote code...
Ubuntu 22.04 LTS / 24.04 LTS : Linux kernel vulnerabilities (USN-6949-1)
"The remote Ubuntu 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6949-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update...
AZL-47492 CVE-2024-42246 affecting package kernel for versions less than 6.6.43.1-7
In the Linux kernel, the following vulnerability has been resolved: net, sunrpc: Remap EPERM in case of connection failure in xstcpsetupsocket When using a BPF program on kernelconnect, the call can return -EPERM. This causes xstcpsetupsocket to loop forever, filling up the syslog and causing the...
UBUNTU-CVE-2024-42246
In the Linux kernel, the following vulnerability has been resolved: net, sunrpc: Remap EPERM in case of connection failure in xstcpsetupsocket When using a BPF program on kernelconnect, the call can return -EPERM. This causes xstcpsetupsocket to loop forever, filling up the syslog and causing the...
kernel: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound
In the Linux kernel, the following vulnerability has been resolved: ipvlan: Dont Use skb-sk in ipvlanprocessv4,6outbound Raw packet from PFPACKET socket ontop of an IPv6-backed ipvlan device will hit WARNONONCE in skmcloop through schdirectxmit path. WARNING: CPU: 2 PID: 0 at net/core/sock.c:775...
kernel: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound
In the Linux kernel, the following vulnerability has been resolved: ipvlan: Dont Use skb-sk in ipvlanprocessv4,6outbound Raw packet from PFPACKET socket ontop of an IPv6-backed ipvlan device will hit WARNONONCE in skmcloop through schdirectxmit path. WARNING: CPU: 2 PID: 0 at net/core/sock.c:775...
kernel: net: core: reject skb_copy(_expand) for fraglist GSO skbs
In the Linux kernel, the following vulnerability has been resolved: net: core: reject skbcopyexpand for fraglist GSO skbs SKBGSOFRAGLIST skbs must not be linearized, otherwise they become invalid. Return NULL if such an skb is passed to skbcopy or skbcopyexpand, in order to prevent a crash on a...
kernel: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound
In the Linux kernel, the following vulnerability has been resolved: ipvlan: Dont Use skb-sk in ipvlanprocessv4,6outbound Raw packet from PFPACKET socket ontop of an IPv6-backed ipvlan device will hit WARNONONCE in skmcloop through schdirectxmit path. WARNING: CPU: 2 PID: 0 at net/core/sock.c:775...