CLSA-2023-1695716575 kernel: Fix of 25 CVEs

xen/xenbus: don't let xenbusgrantring remove grants in error case CVE-2022-23040 - xen/xenbus: Fix granting of vmalloc'd memory - xen/blkfront: don't use gnttabqueryforeignaccess for mapped status CVE-2022-23036 - xen/grant-table: add gnttabtryendforeignaccess CVE-2022-23036 - xen/blkfront: don't...

kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()

An out-of-bounds OOB memory access flaw was found in the Netfilter module in the Linux kernel's nftbyteordereval in net/netfilter/nftbyteorder.c. A bound check failure allows a local attacker with CAPNETADMIN access to cause a local privilege escalation issue due to incorrect data alignment...

kernel: nf_tables: use-after-free in nft_chain_lookup_byid()

A use-after-free flaw was found in the Linux kernel's Netfilter module in net/netfilter/nftablesapi.c in nftchainlookupbyid. This flaw allows a local attacker to cause a local privilege escalation issue due to a missing cleanup...

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

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

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SUSE CVE-2023-3777

A use-after-free vulnerability in the Linux kernel's netfilter: nftables component can be exploited to achieve local privilege escalation. When nftablesdelrule is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain...

Important: kernel

Issue Overview: A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. CVE-2023-20588 The fix for XSA-423 added logic to Linux'es netback driver to deal with a frontend splitting a packet in a way such that not all of the...

AZL-28676 CVE-2023-4244 affecting package kernel for versions less than 5.15.135.1-2

A use-after-free vulnerability in the Linux kernel's netfilter: nftables component can be exploited to achieve local privilege escalation. Due to a race condition between nftables netlink control plane transaction and nftset element garbage collection, it is possible to underflow the reference...

CVE-2023-4244

A use-after-free vulnerability in the Linux kernel's netfilter: nftables component can be exploited to achieve local privilege escalation. Due to a race condition between nftables netlink control plane transaction and nftset element garbage collection, it is possible to underflow the reference...

DEBIAN-CVE-2023-4015

A use-after-free vulnerability in the Linux kernel's netfilter: nftables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nftimmediatedeactivate can lead unbinding the chain and objects be deactivate...

AZL-28675 CVE-2023-4015 affecting package kernel for versions less than 5.15.131.1-2

A use-after-free vulnerability in the Linux kernel's netfilter: nftables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nftimmediatedeactivate can lead unbinding the chain and objects be deactivate...

DEBIAN-CVE-2023-4244

A use-after-free vulnerability in the Linux kernel's netfilter: nftables component can be exploited to achieve local privilege escalation. Due to a race condition between nftables netlink control plane transaction and nftset element garbage collection, it is possible to underflow the reference...

UBUNTU-CVE-2023-4244

A use-after-free vulnerability in the Linux kernel's netfilter: nftables component can be exploited to achieve local privilege escalation. Due to a race condition between nftables netlink control plane transaction and nftset element garbage collection, it is possible to underflow the reference...

Important: kernel

Issue Overview: Information exposure through microarchitectural state after transient execution in certain vector execution units for some IntelR Processors may allow an authenticated user to potentially enable information disclosure via local access. CVE-2022-40982 A division-by-zero error on so...

kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()

An out-of-bounds OOB memory access flaw was found in the Netfilter module in the Linux kernel's nftbyteordereval in net/netfilter/nftbyteorder.c. A bound check failure allows a local attacker with CAPNETADMIN access to cause a local privilege escalation issue due to incorrect data alignment...

The vulnerability of the nft_verdict_dump() function in the net/netfilter/nf_tables_api.c module of the Linux kernel’s netfilter component allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the nftverdictdump function in the net/netfilter/nftablesapi.c module of the Linux kernel’s netfilter component is related to the reutilization of previously freed memory due to concurrent access to resources. Exploiting this vulnerability could allow an attacker to compromis...

The vulnerability of the nft_set_catchallFlush() function in the net/netfilter/nf_tables_api.c module of the Linux kernel’s netfilter component allows a attacker to access protected information or cause a service failure.

The vulnerability of the nftsetcatchallFlush function in the net/netfilter/nftablesapi.c module of the Linux kernel’s netfilter component is related to the re-release of previously released memory. Exploiting this vulnerability could allow an attacker to access protected information or cause...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6325-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6325-1 advisory. Daniel Moghimi discovered that some IntelR Processors did not properly clear microarchitectural state after speculative execution of various...

CVE-2023-4569

A memory leak flaw was found in nftsetcatchallflush in net/netfilter/nftablesapi.c in the Linux Kernel. This issue may allow a local attacker to cause double-deactivations of catchall elements, which can result in a memory leak...

AZL-28545 CVE-2023-4569 affecting package kernel for versions less than 5.15.131.1-2

A memory leak flaw was found in nftsetcatchallflush in net/netfilter/nftablesapi.c in the Linux Kernel. This issue may allow a local attacker to cause double-deactivations of catchall elements, which can result in a memory leak...