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CVE-2026-64569
mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n On CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed attribute table itself instead of calling ip_valid_fib_dump_req(). The RTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is present, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no RTA_OIF hits a NULL dereference. RTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without CAP_NET_ADMIN, so an unprivileged user can trigger it. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189) Call Trace: mpls_dump_routes (net/mpls/af_mpls.c:2236) netlink_dump (net/netlink/af_netlink.c:2331) __netlink_dump_start (net/netlink/af_netlink.c:2446) rtnetlink_rcv_msg (net/core/rtnetlink.c:7033) netlink_rcv_skb (net/netlink/af_netlink.c:2556) netlink_unicast (net/netlink/af_netlink.c:1345) netlink_sendmsg (net/netlink/af_netlink.c:1900) __sock_sendmsg (net/socket.c:790) ____sys_sendmsg (net/socket.c:2684) ___sys_sendmsg (net/socket.c:2738) __sys_sendmsg (net/socket.c:2770) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Skip unset attributes, as ip_valid_fib_dump_req() does.

Details
INFO

Published Date :

Aug. 5, 2026, 8:16 a.m.

Last Modified :

Aug. 19, 2026, 5:20 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-64569 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
The Linux kernel was vulnerable to a NULL dereference. Apply kernel updates.
  • Update the Linux kernel.
  • Skip unset attributes in fib_dump_req.
  • Check attribute presence before dereferencing.
References
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-2026-64569.

URL Resource
https://git.kernel.org/stable/c/03b5a2c29afc8e634924c75d6ee94140e70de88d
https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502
https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3
https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a
https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce
https://git.kernel.org/stable/c/bfc1cb5d6a8308e493e307f1c823d2107abc0a47
https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71
https://git.kernel.org/stable/c/e796ce9ef4356dc7cbbaa8373843f77852f2814d
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-64569 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-2026-64569 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-2026-64569 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-64569 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. 19, 2026

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/03b5a2c29afc8e634924c75d6ee94140e70de88d
    Added Reference https://git.kernel.org/stable/c/bfc1cb5d6a8308e493e307f1c823d2107abc0a47
    Added Reference https://git.kernel.org/stable/c/e796ce9ef4356dc7cbbaa8373843f77852f2814d
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'd6eee7cd078aaf9dd75efc801f6c9b608a37cd71', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '5f6e7b32bd1fbde10fd31a4143260735ea535b8a', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '06db79411a280707c7e4bf4b221ff4e664b51502', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '56d96fededd61192cd7cc8d2b0f36adfd59036c3', 'versionType': 'git'}], 'programFiles': ['net/mpls/af_mpls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.20'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', '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/mpls/af_mpls.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'bfc1cb5d6a8308e493e307f1c823d2107abc0a47', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '03b5a2c29afc8e634924c75d6ee94140e70de88d', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'e796ce9ef4356dc7cbbaa8373843f77852f2814d', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'd6eee7cd078aaf9dd75efc801f6c9b608a37cd71', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '5f6e7b32bd1fbde10fd31a4143260735ea535b8a', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '06db79411a280707c7e4bf4b221ff4e664b51502', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '56d96fededd61192cd7cc8d2b0f36adfd59036c3', 'versionType': 'git'}], 'programFiles': ['net/mpls/af_mpls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.20'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', '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/mpls/af_mpls.c'], 'defaultStatus': 'affected'}]
  • 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': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'd6eee7cd078aaf9dd75efc801f6c9b608a37cd71', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '5f6e7b32bd1fbde10fd31a4143260735ea535b8a', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '06db79411a280707c7e4bf4b221ff4e664b51502', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '56d96fededd61192cd7cc8d2b0f36adfd59036c3', 'versionType': 'git'}], 'programFiles': ['net/mpls/af_mpls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.20'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/mpls/af_mpls.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'd6eee7cd078aaf9dd75efc801f6c9b608a37cd71', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '5f6e7b32bd1fbde10fd31a4143260735ea535b8a', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '06db79411a280707c7e4bf4b221ff4e664b51502', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '56d96fededd61192cd7cc8d2b0f36adfd59036c3', 'versionType': 'git'}], 'programFiles': ['net/mpls/af_mpls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.20'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', '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/mpls/af_mpls.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 05, 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': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'd6eee7cd078aaf9dd75efc801f6c9b608a37cd71', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': 'ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '5f6e7b32bd1fbde10fd31a4143260735ea535b8a', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '06db79411a280707c7e4bf4b221ff4e664b51502', 'versionType': 'git'}, {'status': 'affected', 'version': '196cfebf897266c3450519e916bab9daff74e52c', 'lessThan': '56d96fededd61192cd7cc8d2b0f36adfd59036c3', 'versionType': 'git'}], 'programFiles': ['net/mpls/af_mpls.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.20'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/mpls/af_mpls.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n On CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed attribute table itself instead of calling ip_valid_fib_dump_req(). The RTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is present, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no RTA_OIF hits a NULL dereference. RTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without CAP_NET_ADMIN, so an unprivileged user can trigger it. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189) Call Trace: mpls_dump_routes (net/mpls/af_mpls.c:2236) netlink_dump (net/netlink/af_netlink.c:2331) __netlink_dump_start (net/netlink/af_netlink.c:2446) rtnetlink_rcv_msg (net/core/rtnetlink.c:7033) netlink_rcv_skb (net/netlink/af_netlink.c:2556) netlink_unicast (net/netlink/af_netlink.c:1345) netlink_sendmsg (net/netlink/af_netlink.c:1900) __sock_sendmsg (net/socket.c:790) ____sys_sendmsg (net/socket.c:2684) ___sys_sendmsg (net/socket.c:2738) __sys_sendmsg (net/socket.c:2770) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Skip unset attributes, as ip_valid_fib_dump_req() does.
    Added Reference https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502
    Added Reference https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3
    Added Reference https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a
    Added Reference https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce
    Added Reference https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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