CVE-2023-53831 net: read sk->sk_family once in sk_mc_loop()

In the Linux kernel, the following vulnerability has been resolved: net: read sk-skfamily once in skmcloop syzbot is playing with IPV6ADDRFORM quite a lot these days, and managed to hit the WARNONONCE1 in skmcloop We have many more similar issues to fix. WARNING: CPU: 1 PID: 1593 at...

CVE-2023-53825

CVE-2023-53825 affects the Linux kernel’s kcm_sendmsg() for SOCK_DGRAM. A memory-leak in the error path could corrupt the MSG_MORE queue when a partial copy occurs; the fix updates kcm_tx_msg(head)->last_skb and adds purge behavior on failure (like UDP via udp_flush_pending_frames) to avoid qu...

CVE-2023-53825

In the Linux kernel, the following vulnerability has been resolved: kcm: Fix error handling for SOCKDGRAM in kcmsendmsg. syzkaller found a memory leak in kcmsendmsg, and commit c821a88bd720 "kcm: Fix memory leak in error path of kcmsendmsg" suppressed it by updating kcmtxmsghead-lastskb if partia...

CVE-2023-53825 kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg().

In the Linux kernel, the following vulnerability has been resolved: kcm: Fix error handling for SOCKDGRAM in kcmsendmsg. syzkaller found a memory leak in kcmsendmsg, and commit c821a88bd720 "kcm: Fix memory leak in error path of kcmsendmsg" suppressed it by updating kcmtxmsghead-lastskb if partia...

CVE-2022-50676 net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()

In the Linux kernel, the following vulnerability has been resolved: net: rds: don't hold sock lock when cancelling work from rdstcpresetcallbacks syzbot is reporting lockdep warning at rdstcpresetcallbacks 1, for commit ac3615e7f3cffe2a "RDS: TCP: Reduce code duplication in rdstcpresetcallbacks"...

CVE-2022-50676

In the Linux kernel, the following vulnerability has been resolved: net: rds: don't hold sock lock when cancelling work from rdstcpresetcallbacks syzbot is reporting lockdep warning at rdstcpresetcallbacks 1, for commit ac3615e7f3cffe2a "RDS: TCP: Reduce code duplication in rdstcpresetcallbacks"...

CVE-2023-53809

In the Linux kernel, the following vulnerability has been resolved: l2tp: Avoid possible recursive deadlock in l2tptunnelregister When a file descriptor of pppol2tp socket is passed as file descriptor of UDP socket, a recursive deadlock occurs in l2tptunnelregister. This situation is reproduced b...

DEBIAN-CVE-2023-53809

In the Linux kernel, the following vulnerability has been resolved: l2tp: Avoid possible recursive deadlock in l2tptunnelregister When a file descriptor of pppol2tp socket is passed as file descriptor of UDP socket, a recursive deadlock occurs in l2tptunnelregister. This situation is reproduced b...

CVE-2023-53781

In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in tcpwritetimerhandler. With Eric's ref tracker, syzbot finally found a repro for use-after-free in tcpwritetimerhandler by kernel TCP sockets. 0 If SMC creates a kernel socket in smccreate, the kernel...

DEBIAN-CVE-2023-53781

In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in tcpwritetimerhandler. With Eric's ref tracker, syzbot finally found a repro for use-after-free in tcpwritetimerhandler by kernel TCP sockets. 0 If SMC creates a kernel socket in smccreate, the kernel...

DEBIAN-CVE-2022-50655

In the Linux kernel, the following vulnerability has been resolved: ppp: associate skb with a device at tx Syzkaller triggered flow dissector warning with the following: r0 = openat$ppp0xffffffffffffff9c, &0x7f0000000000, 0xc0802, 0x0 ioctl$PPPIOCNEWUNITr0, 0xc004743e, &0x7f00000000c0...

CVE-2022-50655

In the Linux kernel, the following vulnerability has been resolved: ppp: associate skb with a device at tx Syzkaller triggered flow dissector warning with the following: r0 = openat$ppp0xffffffffffffff9c, &0x7f0000000000, 0xc0802, 0x0 ioctl$PPPIOCNEWUNITr0, 0xc004743e, &0x7f00000000c0...

UBUNTU-CVE-2023-53809

In the Linux kernel, the following vulnerability has been resolved: l2tp: Avoid possible recursive deadlock in l2tptunnelregister When a file descriptor of pppol2tp socket is passed as file descriptor of UDP socket, a recursive deadlock occurs in l2tptunnelregister. This situation is reproduced b...

UBUNTU-CVE-2023-53785

In the Linux kernel, the following vulnerability has been resolved: mt76: mt7921: don't assume adequate headroom for SDIO headers mt7921usbsdiotxprepareskb calls mt7921usbsdiowritetxwi and mt7921skbaddusbsdiohdr, both of which blindly assume that adequate headroom will be available in the passed...

SUSE CVE-2023-53752

In the Linux kernel, the following vulnerability has been resolved: net: deal with integer overflows in kmallocreserve Blamed commit changed: ptr = kmallocsize; if ptr size = ksizeptr; size = kmallocsizeroundupsize; ptr = kmallocsize; This allowed various crash as reported by syzbot 1 and Kyle...

SUSE CVE-2025-40301

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first byte of the remaining skb-data contains the return status. However,...

CVE-2023-53809

The CVE-2023-53809 issue affects the Linux kernel where passing a pppol2tp socket as a UDP socket to l2tp_tunnel_register() could trigger a recursive locking deadlock. Root cause: a lock order condition allowed deadlock when a socket path led to nested locking of sk_lock-AF_PPPOX. The advisory no...

CVE-2023-53809

In the Linux kernel, the following vulnerability has been resolved: l2tp: Avoid possible recursive deadlock in l2tptunnelregister When a file descriptor of pppol2tp socket is passed as file descriptor of UDP socket, a recursive deadlock occurs in l2tptunnelregister. This situation is reproduced b...

CVE-2023-53809 l2tp: Avoid possible recursive deadlock in l2tp_tunnel_register()

In the Linux kernel, the following vulnerability has been resolved: l2tp: Avoid possible recursive deadlock in l2tptunnelregister When a file descriptor of pppol2tp socket is passed as file descriptor of UDP socket, a recursive deadlock occurs in l2tptunnelregister. This situation is reproduced b...

CVE-2023-53802 wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: htchst: free skb in ath9khtcrxmsg if there is no callback function It is stated that ath9khtcrxmsg either frees the provided skb or passes its management to another callback function. However, the skb is not freed in...