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CVE-2023-6817

Use-after-free in Linux kernel's netfilter: nf_tables component

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free. We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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Linux Kernel Enterprise Linux Logging and 5 more
CVE-2023-1652

Kernel: use-after-free in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c

A use-after-free flaw was found in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c in the NFS filesystem in the Linux Kernel. This issue could allow a local attacker to crash the system or it may lead to a kernel information leak problem.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux Rhel E4s
CVE-2022-43945

kernel: nfsd buffer overflow by RPC message over TCP with garbage data

The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call (RPC) into a single array of pages. A client can force the send buffer to shrink by sending an RPC message over TCP with garbage data added at the end of the message. The RPC message with garbage data is still correctly formed according to the specification and is passed forward to handlers. Vulnerable code in NFSD is not expecting the oversized request and writes beyond the allocated buffer space. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 3.1 · 7.5 High EPSS 5.5% KEV · Not listed
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Linux Netapp Redhat
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Linux Kernel Active Iq Unified Manager H300s and 11 more
CVE-2022-38096

There is a NULL pointer vulnerability in vmwgfx driver

A NULL pointer dereference vulnerability was found in vmwgfx driver in drivers/gpu/vmxgfx/vmxgfx_execbuf.c in GPU component of Linux kernel with device file '/dev/dri/renderD128 (or Dxxx)'. This flaw allows a local attacker with a user account on the system to gain privilege, causing a denial of service(DoS).

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux Logging and 5 more
CVE-2024-40936

cxl/region: Fix memregion leaks in devm_cxl_add_region()

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix memregion leaks in devm_cxl_add_region() Move the mode verification to __create_region() before allocating the memregion to avoid the memregion leaks.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux
CVE-2024-40931

mptcp: ensure snd_una is properly initialized on connect

In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure snd_una is properly initialized on connect This is strictly related to commit fb7a0d334894 ("mptcp: ensure snd_nxt is properly initialized on connect"). It turns out that syzkaller can trigger the retransmit after fallback and before processing any other incoming packet - so that snd_una is still left uninitialized. Address the issue explicitly initializing snd_una together with snd_nxt and write_seq.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux Rhel Eus
CVE-2024-35831

io_uring: Fix release of pinned pages when __io_uaddr_map fails

In the Linux kernel, the following vulnerability has been resolved: io_uring: Fix release of pinned pages when __io_uaddr_map fails Looking at the error path of __io_uaddr_map, if we fail after pinning the pages for any reasons, ret will be set to -EINVAL and the error handler won't properly release the pinned pages. I didn't manage to trigger it without forcing a failure, but it can happen in real life when memory is heavily fragmented.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux
CVE-2024-26862

packet: annotate data-races around ignore_outgoing

In the Linux kernel, the following vulnerability has been resolved: packet: annotate data-races around ignore_outgoing ignore_outgoing is read locklessly from dev_queue_xmit_nit() and packet_getsockopt() Add appropriate READ_ONCE()/WRITE_ONCE() annotations. syzbot reported: BUG: KCSAN: data-race in dev_queue_xmit_nit / packet_setsockopt write to 0xffff888107804542 of 1 bytes by task 22618 on cpu 0: packet_setsockopt+0xd83/0xfd0 net/packet/af_packet.c:4003 do_sock_setsockopt net/socket.c:2311 [inline] __sys_setsockopt+0x1d8/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2340 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 read to 0xffff888107804542 of 1 bytes by task 27 on cpu 1: dev_queue_xmit_nit+0x82/0x620 net/core/dev.c:2248 xmit_one net/core/dev.c:3527 [inline] dev_hard_start_xmit+0xcc/0x3f0 net/core/dev.c:3547 __dev_queue_xmit+0xf24/0x1dd0 net/core/dev.c:4335 dev_queue_xmit include/linux/netdevice.h:3091 [inline] batadv_send_skb_packet+0x264/0x300 net/batman-adv/send.c:108 batadv_send_broadcast_skb+0x24/0x30 net/batman-adv/send.c:127 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline] batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline] batadv_iv_send_outstanding_bat_ogm_packet+0x3f0/0x4b0 net/batman-adv/bat_iv_ogm.c:1700 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335 worker_thread+0x526/0x730 kernel/workqueue.c:3416 kthread+0x1d1/0x210 kernel/kthread.c:388 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 27 Comm: kworker/u8:1 Tainted: G W 6.8.0-syzkaller-08073-g480e035fc4c7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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Debian Linux Redhat
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Debian Linux Linux Kernel Enterprise Linux
CVE-2023-52883

drm/amdgpu: Fix possible null pointer dereference

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix possible null pointer dereference abo->tbo.resource may be NULL in amdgpu_vm_bo_update.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Rhel Eus
CVE-2023-52878

can: dev: can_put_echo_skb(): don't crash kernel if can_priv::echo_skb is accessed out of bounds

In the Linux kernel, the following vulnerability has been resolved: can: dev: can_put_echo_skb(): don't crash kernel if can_priv::echo_skb is accessed out of bounds If the "struct can_priv::echoo_skb" is accessed out of bounds, this would cause a kernel crash. Instead, issue a meaningful warning message and return with an error.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux Rhel Eus
CVE-2023-52690

powerpc/powernv: Add a null pointer check to scom_debug_init_one()

In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check to scom_debug_init_one() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Add a null pointer check, and release 'ent' to avoid memory leaks.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Debian Linux Redhat
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Debian Linux Linux Kernel Enterprise Linux
CVE-2023-52686

powerpc/powernv: Add a null pointer check in opal_event_init()

In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check in opal_event_init() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Debian Linux Redhat
Products
Debian Linux Linux Kernel Enterprise Linux
CVE-2022-49631

raw: Fix a data-race around sysctl_raw_l3mdev_accept.

In the Linux kernel, the following vulnerability has been resolved: raw: Fix a data-race around sysctl_raw_l3mdev_accept. While reading sysctl_raw_l3mdev_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux
CVE-2022-49598

tcp: Fix data-races around sysctl_tcp_mtu_probing.

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctl_tcp_mtu_probing. While reading sysctl_tcp_mtu_probing, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
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Linux Kernel Enterprise Linux
CVE-2022-49596

tcp: Fix data-races around sysctl_tcp_min_snd_mss.

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctl_tcp_min_snd_mss. While reading sysctl_tcp_min_snd_mss, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
Products
Linux Kernel Enterprise Linux
CVE-2022-49595

tcp: Fix a data-race around sysctl_tcp_probe_threshold.

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_probe_threshold. While reading sysctl_tcp_probe_threshold, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
Products
Linux Kernel Enterprise Linux
CVE-2022-49593

tcp: Fix a data-race around sysctl_tcp_probe_interval.

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_probe_interval. While reading sysctl_tcp_probe_interval, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux
CVE-2022-49590

igmp: Fix data-races around sysctl_igmp_llm_reports.

In the Linux kernel, the following vulnerability has been resolved: igmp: Fix data-races around sysctl_igmp_llm_reports. While reading sysctl_igmp_llm_reports, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. This test can be packed into a helper, so such changes will be in the follow-up series after net is merged into net-next. if (ipv4_is_local_multicast(pmc->multiaddr) && !READ_ONCE(net->ipv4.sysctl_igmp_llm_reports))

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
Products
Linux Kernel Enterprise Linux
CVE-2022-49589

igmp: Fix data-races around sysctl_igmp_qrv.

In the Linux kernel, the following vulnerability has been resolved: igmp: Fix data-races around sysctl_igmp_qrv. While reading sysctl_igmp_qrv, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. This test can be packed into a helper, so such changes will be in the follow-up series after net is merged into net-next. qrv ?: READ_ONCE(net->ipv4.sysctl_igmp_qrv);

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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Linux Redhat
Products
Linux Kernel Enterprise Linux
CVE-2022-49586

tcp: Fix data-races around sysctl_tcp_fastopen.

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctl_tcp_fastopen. While reading sysctl_tcp_fastopen, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux