Important: kernel-livepatch-4.14.336-257.568

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv-len is a multiple of 4, then dstlen / 4 can write past the destination array which leads to stack corruption. This construct is necessary to clean th...

Important: kernel-livepatch-4.14.336-257.562

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv-len is a multiple of 4, then dstlen / 4 can write past the destination array which leads to stack corruption. This construct is necessary to clean th...

Amazon Linux 2 : kernel (ALASKERNEL-5.4-2024-069)

The version of kernel installed on the remote host is prior to 5.4.276-189.376. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2024-069 advisory. 2024-07-03: CVE-2024-36904 was added to this advisory. 2024-07-03: CVE-2024-36954 was added to this...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv-len is a multiple of 4, then dstlen / 4 can write past the destination array which leads to stack corruption. This construct is necessary to clean th...

kernel: netfilter: nftables: exthdr: fix 4-byte stack OOB write

An out-of-bounds write flaw was found in the Linux kernel’s Netfilter functionality. This flaw allows a local user to crash or potentially escalate their privileges on the system...

kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction

A use-after-free flaw was found in the Linux kernel’s nftables sub-component due to a race problem between the set GC and transaction in the Linux Kernel. This flaw allows a local attacker to crash the system due to a missing call to nftsetelemmarkbusy, causing double deactivation of the element...

kernel: netfilter: nftables: exthdr: fix 4-byte stack OOB write

An out-of-bounds write flaw was found in the Linux kernel’s Netfilter functionality. This flaw allows a local user to crash or potentially escalate their privileges on the system...

RHEL 9 : kernel-rt (RHSA-2024:3414)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:3414 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirement...

CVE-2021-47546

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

CVE-2021-47546

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

CVE-2021-47546

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

CVE-2021-47546

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

CVE-2021-47546

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

CVE-2021-47546 ipv6: fix memory leak in fib6_rule_suppress

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

CVE-2021-47546

CVE-2021-47546 is a Linux kernel vulnerability affecting IPv6 nftables rules. When a fib6_rule_suppress path and a suppress_prefix rule exist, memory leaks occur in ip6_dst_cache per-packet allocations. The root cause is a mismatch between generic FIB_LOOKUP_NOREF and the IPv6-specific RT6_LOOKUP...

CVE-2021-47546 ipv6: fix memory leak in fib6_rule_suppress

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction

A use-after-free flaw was found in the Linux kernel’s nftables sub-component due to a race problem between the set GC and transaction in the Linux Kernel. This flaw allows a local attacker to crash the system due to a missing call to nftsetelemmarkbusy, causing double deactivation of the element...

kernel: netfilter: nf_tables: memory leak when more than 255 elements expired

A use-after-free flaw was found in the Linux kernel’s nftables sub-component due to a race problem between the set GC and transaction in the Linux Kernel. This flaw allows a local attacker to crash the system. This flaw is similar to the previous CVE-2023-4244 but for a different part of the sour...

kernel: netfilter: nftables out-of-bounds read in nf_osf_match_one()

A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnlosfaddcallback function did not validate the user mode controlled optnum field. This flaw allows a local privileged CAPNETADMIN attacker to trigger an out-of-bounds read, leading to a crash or information disclosure...

kernel: netfilter: nftables out-of-bounds read in nf_osf_match_one()

A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnlosfaddcallback function did not validate the user mode controlled optnum field. This flaw allows a local privileged CAPNETADMIN attacker to trigger an out-of-bounds read, leading to a crash or information disclosure...