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CVE-2023-42753

Status Candidate

Overview

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

Related Files

Red Hat Security Advisory 2024-0371-03
Posted Jan 24, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-0371-03 - An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.

tags | advisory
systems | linux, redhat
advisories | CVE-2023-42753
SHA-256 | bcff02c4ab2cee65f1d0c78f46d013a7803b2ab50b3df645a9521c51a6c36292
Red Hat Security Advisory 2024-0347-03
Posted Jan 24, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-0347-03 - An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2023-42753
SHA-256 | caac303ef44faa91543aae28d16b4fcc89acdd1d124c830f7a7491d5dec8e02b
Red Hat Security Advisory 2024-0346-03
Posted Jan 24, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-0346-03 - An update for kernel is now available for Red Hat Enterprise Linux 7.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2023-42753
SHA-256 | 83f80ef6f2ed477c1ec131a801e8f01c6bd6e072945fc43503e009b6f0aea9ea
Kernel Live Patch Security Notice LSN-0099-1
Posted Nov 29, 2023
Authored by Benjamin M. Romer

It was discovered that the Xen netback driver in the Linux kernel did not properly handle packets structured in certain ways. An attacker in a guest VM could possibly use this to cause a denial of service (host NIC availability). It was discovered that the virtual terminal driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). Various other issues were discovered and addressed.

tags | advisory, denial of service, kernel, local
systems | linux
advisories | CVE-2022-3643, CVE-2023-31436, CVE-2023-34319, CVE-2023-3567, CVE-2023-3609, CVE-2023-3776, CVE-2023-3777, CVE-2023-3995, CVE-2023-4004, CVE-2023-40283, CVE-2023-42752, CVE-2023-42753, CVE-2023-4622, CVE-2023-4623
SHA-256 | ee52836c711111ecd52b6c4162409caa5a393b4ec4571f1e5de8d4ace83228b9
Ubuntu Security Notice USN-6441-3
Posted Oct 31, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6441-3 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Kyle Zeng discovered that the networking stack implementation in the Linux kernel did not properly validate skb object size in certain conditions. An attacker could use this cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | cd013211e7487024671fcf7d94d72ba9336b3ec594db53047c4a61d17a3ea40b
Ubuntu Security Notice USN-6446-3
Posted Oct 26, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6446-3 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921, CVE-2023-5197
SHA-256 | 484ebd5fb48372ba1a85bd65fdc24bc439655586fb452d16cfa2fba3c7f9088e
Ubuntu Security Notice USN-6446-2
Posted Oct 24, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6446-2 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921, CVE-2023-5197
SHA-256 | f0dc5ad0a790213ff19892b967ead2603483e643e8cae2857c45b952dc3896fe
Ubuntu Security Notice USN-6444-2
Posted Oct 24, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6444-2 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921, CVE-2023-5197
SHA-256 | e1d72b79310f991fbf9447b368e82c18985bd69f9a6a49de7ca3fae3cd49f9c6
Ubuntu Security Notice USN-6441-2
Posted Oct 24, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6441-2 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Kyle Zeng discovered that the networking stack implementation in the Linux kernel did not properly validate skb object size in certain conditions. An attacker could use this cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | 44a8d74486573b90a3938d4de86fd5260a49f42a9d0fa43f3e35fdf5e38e0ffe
Ubuntu Security Notice USN-6439-2
Posted Oct 24, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6439-2 - It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service. Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in the Linux kernel contained a race condition, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-1206, CVE-2023-31083, CVE-2023-34319, CVE-2023-3772, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | 2fd25e40051d1ba2bbf46094a9e3c568101d4401e9c1c5f7d1348688c66cd0a2
Ubuntu Security Notice USN-6440-2
Posted Oct 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6440-2 - Seth Jenkins discovered that the Linux kernel did not properly perform address randomization for a per-cpu memory management structure. A local attacker could use this to expose sensitive information or in conjunction with another kernel vulnerability. It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-0597, CVE-2023-1206, CVE-2023-31083, CVE-2023-34319, CVE-2023-3772, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | 53dde989c721b58c0ab2a8afed3fd49eb8bd3b0589646a03c93ff63b342aa7dd
Ubuntu Security Notice USN-6446-1
Posted Oct 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6446-1 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921, CVE-2023-5197
SHA-256 | 983eb07e4f52536926c8898d1770d713cdd350b8877f816cb919688180d04372
Ubuntu Security Notice USN-6440-1
Posted Oct 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6440-1 - Seth Jenkins discovered that the Linux kernel did not properly perform address randomization for a per-cpu memory management structure. A local attacker could use this to expose sensitive information or in conjunction with another kernel vulnerability. It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-0597, CVE-2023-1206, CVE-2023-31083, CVE-2023-34319, CVE-2023-3772, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | 598cc5d139a12c8f709abd7b1310edc18543d27b190ad6ec74fe1916b728621c
Ubuntu Security Notice USN-6442-1
Posted Oct 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6442-1 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the netfilter subsystem in the Linux kernel did not properly handle PIPAPO element removal, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service or execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-4004, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | 624ca94c1f61f0b559f33ddb2227d18b1b0967ea91bffacbc1c10b4b19320a6d
Ubuntu Security Notice USN-6441-1
Posted Oct 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6441-1 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Kyle Zeng discovered that the networking stack implementation in the Linux kernel did not properly validate skb object size in certain conditions. An attacker could use this cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | a66b0d7f031b83030940495dffa4d55e99dd4144b4b592319cafa0610e3bf224
Ubuntu Security Notice USN-6444-1
Posted Oct 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6444-1 - Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921, CVE-2023-5197
SHA-256 | 8645d582e10335986115be5495a9fdd5e21177f253b7c4269b41af043d52fdd1
Ubuntu Security Notice USN-6439-1
Posted Oct 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6439-1 - It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker could use this to cause a denial of service. Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in the Linux kernel contained a race condition, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-1206, CVE-2023-31083, CVE-2023-34319, CVE-2023-3772, CVE-2023-42752, CVE-2023-42753, CVE-2023-42755, CVE-2023-4622, CVE-2023-4623, CVE-2023-4881, CVE-2023-4921
SHA-256 | 72f14266ef2dab28b735ecdb9a984376148d27762c1aaf7bfb59ca14bddaaab9
Ubuntu Security Notice USN-6415-1
Posted Oct 5, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6415-1 - Daniel Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory. Ivan D Barrera, Christopher Bednarz, Mustafa Ismail, and Shiraz Saleem discovered that the InfiniBand RDMA driver in the Linux kernel did not properly check for zero-length STAG or MR registration. A remote attacker could possibly use this to execute arbitrary code.

tags | advisory, remote, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-20569, CVE-2023-25775, CVE-2023-37453, CVE-2023-3772, CVE-2023-3773, CVE-2023-42753, CVE-2023-4622, CVE-2023-4623
SHA-256 | ac0576ea83c3691a31572b17759cf26008e0d00fe1b127688ad4fc8be0c5c1ec
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