CVE-2026-68322
rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled
Description
In the Linux kernel, the following vulnerability has been resolved: rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, inet6_addr_lst is never initialized because inet6_init() exits before addrconf_init() is called to initialize it. An attempt to bind an RDS socket to an ipv6 address results in a crash in __ipv6_chk_addr_and_flags() KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] RIP: 0010:__ipv6_chk_addr_and_flags+0x1df/0x7e0 Call Trace: <TASK> ipv6_chk_addr+0x3b/0x50 rds_tcp_laddr_check+0x155/0x3b0 [rds_tcp] rds_trans_get_preferred+0x15d/0x2d0 [rds] ? trace_hardirqs_on+0x2d/0x110 rds_bind+0x1433/0x1d60 [rds] ? rds_remove_bound+0xd50/0xd50 [rds] ? aa_af_perm+0x250/0x250 ? __might_fault+0xde/0x190 ? __sys_bind+0x1dc/0x210 __sys_bind+0x1dc/0x210 ? __ia32_sys_socketpair+0x100/0x100 ? restore_fpregs_from_fpstate+0x53/0x100 __x64_sys_bind+0x73/0xb0 ? syscall_enter_from_user_mode+0x1c/0x50 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f47f8269ea9 </TASK> The following code reproduces the issue: struct sockaddr_in6 addr; s = socket(PF_RDS, SOCK_SEQPACKET, 0); memset(&addr, 0, sizeof(addr)); inet_pton(AF_INET6, ADDRESS, &addr.sin6_addr); addr.sin6_family = AF_INET6; addr.sin6_port = htons(PORT); bind(s, &addr, sizeof(addr)); Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the Linux kernel patch for rds: inet6_addr_lst NULL dereference.
- Recompile the Linux kernel.
- Install the updated kernel.
- Reboot the system.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68322.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68322 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-68322
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-68322 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68322 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '8e48d7ab1e01936a172ff31531904b003895fd8c', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': 'a8302e758050e6a922765aee8d220a4fd350f52d', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': 'f6787fdffcae5490c779f0f3f33b11597525d1ae', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '00d5707217b5972554898ff734ae7b71bce704e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '9c805e592a29be9e4e61ff1bd567da04aa8fd6f9', 'versionType': 'git'}], 'programFiles': ['net/rds/ib.c', 'net/rds/ib_cm.c', 'net/rds/tcp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/rds/ib.c', 'net/rds/ib_cm.c', 'net/rds/tcp.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '8e48d7ab1e01936a172ff31531904b003895fd8c', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': 'a8302e758050e6a922765aee8d220a4fd350f52d', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': 'f6787fdffcae5490c779f0f3f33b11597525d1ae', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '00d5707217b5972554898ff734ae7b71bce704e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '9c805e592a29be9e4e61ff1bd567da04aa8fd6f9', 'versionType': 'git'}], 'programFiles': ['net/rds/ib.c', 'net/rds/ib_cm.c', 'net/rds/tcp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/rds/ib.c', 'net/rds/ib_cm.c', 'net/rds/tcp.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '8e48d7ab1e01936a172ff31531904b003895fd8c', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': 'a8302e758050e6a922765aee8d220a4fd350f52d', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': 'f6787fdffcae5490c779f0f3f33b11597525d1ae', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '00d5707217b5972554898ff734ae7b71bce704e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'eee2fa6ab3225192d6d894c54a6fb02ac9efdff6', 'lessThan': '9c805e592a29be9e4e61ff1bd567da04aa8fd6f9', 'versionType': 'git'}], 'programFiles': ['net/rds/ib.c', 'net/rds/ib_cm.c', 'net/rds/tcp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/rds/ib.c', 'net/rds/ib_cm.c', 'net/rds/tcp.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, inet6_addr_lst is never initialized because inet6_init() exits before addrconf_init() is called to initialize it. An attempt to bind an RDS socket to an ipv6 address results in a crash in __ipv6_chk_addr_and_flags() KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] RIP: 0010:__ipv6_chk_addr_and_flags+0x1df/0x7e0 Call Trace: <TASK> ipv6_chk_addr+0x3b/0x50 rds_tcp_laddr_check+0x155/0x3b0 [rds_tcp] rds_trans_get_preferred+0x15d/0x2d0 [rds] ? trace_hardirqs_on+0x2d/0x110 rds_bind+0x1433/0x1d60 [rds] ? rds_remove_bound+0xd50/0xd50 [rds] ? aa_af_perm+0x250/0x250 ? __might_fault+0xde/0x190 ? __sys_bind+0x1dc/0x210 __sys_bind+0x1dc/0x210 ? __ia32_sys_socketpair+0x100/0x100 ? restore_fpregs_from_fpstate+0x53/0x100 __x64_sys_bind+0x73/0xb0 ? syscall_enter_from_user_mode+0x1c/0x50 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f47f8269ea9 </TASK> The following code reproduces the issue: struct sockaddr_in6 addr; s = socket(PF_RDS, SOCK_SEQPACKET, 0); memset(&addr, 0, sizeof(addr)); inet_pton(AF_INET6, ADDRESS, &addr.sin6_addr); addr.sin6_family = AF_INET6; addr.sin6_port = htons(PORT); bind(s, &addr, sizeof(addr)); Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller. Added Reference https://git.kernel.org/stable/c/00d5707217b5972554898ff734ae7b71bce704e6 Added Reference https://git.kernel.org/stable/c/8e48d7ab1e01936a172ff31531904b003895fd8c Added Reference https://git.kernel.org/stable/c/9c805e592a29be9e4e61ff1bd567da04aa8fd6f9 Added Reference https://git.kernel.org/stable/c/a8302e758050e6a922765aee8d220a4fd350f52d Added Reference https://git.kernel.org/stable/c/f6787fdffcae5490c779f0f3f33b11597525d1ae