kernel: xsk: fix refcount underflow in error path

In the Linux kernel, the following vulnerability has been resolved: xsk: fix refcount underflow in error path Fix a refcount underflow problem reported by syzbot that can happen when a system is running out of memory. If xpalloctxdescs fails, and it can only fail due to not having enough memory,...

kernel: local dos vulnerability in scatterwalk_copychunks

A null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm scatterwalk functionality. This issue occurs when a user constructs a malicious packet with specific socket configuration, which could allow a local user to crash the system or escalate their...

kernel: ipv4: NULL pointer dereference in ipv4_send_dest_unreach()

A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer skb was assumed to be associated with a device before calling ipoptionscompile, which is not always the case if the skb is re-routed by ipvs. This issue may allow a local user with CAPNETADMIN privileges t...

DEBIAN-CVE-2021-47442

In the Linux kernel, the following vulnerability has been resolved: NFC: digital: fix possible memory leak in digitalinsendsddreq 'skb' is allocated in digitalinsendsddreq, but not free when digitalinsendcmd failed, which will cause memory leak. Fix it by freeing 'skb' if digitalinsendcmd return...

UBUNTU-CVE-2021-47442

In the Linux kernel, the following vulnerability has been resolved: NFC: digital: fix possible memory leak in digitalinsendsddreq 'skb' is allocated in digitalinsendsddreq, but not free when digitalinsendcmd failed, which will cause memory leak. Fix it by freeing 'skb' if digitalinsendcmd return...

DEBIAN-CVE-2023-52845

In the Linux kernel, the following vulnerability has been resolved: tipc: Change nlapolicy for bearer-related names to NLANULSTRING syzbot reported the following uninit-value access issue 1: ===================================================== BUG: KMSAN: uninit-value in strlen lib/string.c:418...

DEBIAN-CVE-2023-52782

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Track xmit submission to PTP WQ after populating metadata map Ensure the skb is available in metadata mapping to skbs before tracking the metadata index for detecting undelivered CQEs. If the metadata index is put in t...

DEBIAN-CVE-2023-52772

In the Linux kernel, the following vulnerability has been resolved: afunix: fix use-after-free in unixstreamreadactor syzbot reported the following crash 1 After releasing unix socket lock, u-oobskb can be changed by another thread. We must temporarily increase skb refcount to make sure this othe...

CVE-2023-52842

In the Linux kernel, the following vulnerability has been resolved: virtio/vsock: Fix uninit-value in virtiotransportrecvpkt KMSAN reported the following uninit-value access issue: ===================================================== BUG: KMSAN: uninit-value in virtiotransportrecvpkt+0x1dfb/0x26...

UBUNTU-CVE-2023-52878

In the Linux kernel, the following vulnerability has been resolved: can: dev: canputechoskb: don't crash kernel if canpriv::echoskb is accessed out of bounds If the "struct canpriv::echooskb" is accessed out of bounds, this would cause a kernel crash. Instead, issue a meaningful warning message a...

UBUNTU-CVE-2023-52701

In the Linux kernel, the following vulnerability has been resolved: net: use a bounce buffer for copying skb-mark syzbot found arm64 builds would crash in sockrecvmark when CONFIGHARDENEDUSERCOPY=y x86 and powerpc are not detecting the issue because they define useraccessbegin. This will be handl...

CVE-2023-52772

In the Linux kernel, the following vulnerability has been resolved: afunix: fix use-after-free in unixstreamreadactor syzbot reported the following crash 1 After releasing unix socket lock, u-oobskb can be changed by another thread. We must temporarily increase skb refcount to make sure this othe...

UBUNTU-CVE-2023-52772

In the Linux kernel, the following vulnerability has been resolved: afunix: fix use-after-free in unixstreamreadactor syzbot reported the following crash 1 After releasing unix socket lock, u-oobskb can be changed by another thread. We must temporarily increase skb refcount to make sure this othe...

CVE-2023-52772 af_unix: fix use-after-free in unix_stream_read_actor()

In the Linux kernel, the following vulnerability has been resolved: afunix: fix use-after-free in unixstreamreadactor syzbot reported the following crash 1 After releasing unix socket lock, u-oobskb can be changed by another thread. We must temporarily increase skb refcount to make sure this othe...

DEBIAN-CVE-2021-47367

In the Linux kernel, the following vulnerability has been resolved: virtio-net: fix pages leaking when building skb in big mode We try to use buildskb if we had sufficient tailroom. But we forget to release the unused pages chained via private in big mode which will leak pages. Fixing this by...

DEBIAN-CVE-2021-47294

In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 "netrom: switch to sock timer API" switched to use sock timer API. It replaces modtimer by skresettimer, and deltimer by skstoptimer. Function skresettime...

CVE-2021-47294

In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 "netrom: switch to sock timer API" switched to use sock timer API. It replaces modtimer by skresettimer, and deltimer by skstoptimer. Function skresettime...

DEBIAN-CVE-2021-47298

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix potential memory leak on unlikely error case If skblinearize is needed and fails we could leak a msg on the error handling. To fix ensure we kfree the msg block before returning error. Found during code review...

DEBIAN-CVE-2021-47248

In the Linux kernel, the following vulnerability has been resolved: udp: fix race between close and udpabort Kaustubh reported and diagnosed a panic in udpliblookup. The root cause is udpabort racing with close. Both racing functions acquire the socket lock, but udpv6destroysock release it before...

DEBIAN-CVE-2021-47231

In the Linux kernel, the following vulnerability has been resolved: can: mcbausb: fix memory leak in mcbausb Syzbot reported memory leak in SocketCAN driver for Microchip CAN BUS Analyzer Tool. The problem was in unfreed usbcoherent. In mcbausbstart 20 coherent buffers are allocated and there is...