Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from prematurely releasing a reference to pmc-idev, which could lead to reuse after release...

PT-2025-33597

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The Linux kernel contains an issue where a reference to pmc-idev is released prematurely in the mld del delrec function. This occurs because pmc-idev is still used in ip6 mc clear src,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: Avoid a possible NULL dereference in rt6uncachedlistFlushDev. The responsible commit accidentally removed a check for rt-rt6iidev being NULL, as detected by syzbot. Oops: General protection fault, likely due to a...

SUSE CVE-2024-47707

In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid possible NULL deref in rt6uncachedlistflushdev Blamed commit accidentally removed a check for rt-rt6iidev being NULL, as spotted by syzbot: Oops: general protection fault, probably for non-canonical address...

kernel: xfrm6: check ip6_dst_idev() return value in xfrm6_get_saddr()

A vulnerability was found in the Linux kernel's IPv6 handling in the xfrm6getsaddr function, where the issue occurs when ip6dstidev returns NULL, leading to a null pointer dereference and resulting in a general protection fault...

kernel: ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6rules: avoid possible NULL dereference in fib6ruleaction syzbot is able to trigger the following crash 1, caused by unsafe ip6dstidev use. Indeed ip6dstidev can return NULL, and must always be checked. 1 Oops: general...

kernel: ipv6: prevent NULL dereference in ip6_output()

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent NULL dereference in ip6output According to syzbot, there is a chance that ip6dstidev returns NULL in ip6output. Most places in IPv6 stack deal with a NULL idev just fine, but not here. syzbot reported: general...

kernel: ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6rules: avoid possible NULL dereference in fib6ruleaction syzbot is able to trigger the following crash 1, caused by unsafe ip6dstidev use. Indeed ip6dstidev can return NULL, and must always be checked. 1 Oops: general...

kernel: ipv6: prevent NULL dereference in ip6_output()

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent NULL dereference in ip6output According to syzbot, there is a chance that ip6dstidev returns NULL in ip6output. Most places in IPv6 stack deal with a NULL idev just fine, but not here. syzbot reported: general...

CVE-2024-44986

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in ip6finishoutput2 If skbexpandhead returns NULL, skb has been freed and associated dst/idev could also have been freed. We need to hold rcureadlock to make sure the dst and associated idev are alive...

CVE-2024-44986 ipv6: fix possible UAF in ip6_finish_output2()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in ip6finishoutput2 If skbexpandhead returns NULL, skb has been freed and associated dst/idev could also have been freed. We need to hold rcureadlock to make sure the dst and associated idev are alive...

CVE-2024-44985 ipv6: prevent possible UAF in ip6_xmit()

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UAF in ip6xmit If skbexpandhead returns NULL, skb has been freed and the associated dst/idev could also have been freed. We must use rcureadlock to prevent a possible UAF...

CVE-2022-48910

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ensure we call ipv6mcdown at most once There are two reasons for addrconfnotify to be called with NETDEVDOWN: either the network device is actually going down, or IPv6 was disabled on the interface. If either of them...

CVE-2022-48910 net: ipv6: ensure we call ipv6_mc_down() at most once

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: ensure we call ipv6mcdown at most once There are two reasons for addrconfnotify to be called with NETDEVDOWN: either the network device is actually going down, or IPv6 was disabled on the interface. If either of them...

CVE-2022-48785 ipv6: mcast: use rcu-safe version of ipv6_get_lladdr()

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: use rcu-safe version of ipv6getlladdr Some time ago 8965779d2c0e "ipv6,mcast: always hold idev-lock before mcalock" switched ipv6getlladdr to ipv6getlladdr, which is rcu-unsafe version. That was OK, because idev-lock...

DEBIAN-CVE-2024-40959

In the Linux kernel, the following vulnerability has been resolved: xfrm6: check ip6dstidev return value in xfrm6getsaddr ip6dstidev can return NULL, xfrm6getsaddr must act accordingly. syzbot reported: Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 1...

UBUNTU-CVE-2024-40959

In the Linux kernel, the following vulnerability has been resolved: xfrm6: check ip6dstidev return value in xfrm6getsaddr ip6dstidev can return NULL, xfrm6getsaddr must act accordingly. syzbot reported: Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 1...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the xfrm6 component failing to properly check the return value of the ip6dstidev function when obtaining a...

CVE-2023-52744

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix potential NULL-ptr-dereference indevget can return NULL which will cause a failure once idev is dereferenced in indevforeachifartnl. This patch adds a check for NULL value in idev beforehand. Found by Linux...

DEBIAN-CVE-2024-36902

In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6rules: avoid possible NULL dereference in fib6ruleaction syzbot is able to trigger the following crash 1, caused by unsafe ip6dstidev use. Indeed ip6dstidev can return NULL, and must always be checked. 1 Oops: general...