NVD / CVE Program· CNA Linux

CVE-2024-36008: ipv4: check for NULL idev in ip_route_use_hint()

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 03b5a9b2b526862b21bcc31976e393a6e63785d1, 58a4c9b1e5a3e53c9148e80b90e1e43897ce77d1, 7a25bfd12733a8f38f8ca47c581f876c3d481ac0; azl3 hyperv-daemons 6.6.29.1-1 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1.

Low priority for now. Upgrade to Linux Linux 03b5a9b2b526862b21bcc31976e393a6e63785d1, 58a4c9b1e5a3e53c9148e80b90e1e43897ce77d1, 7a25bfd12733a8f38f8ca47c581f876c3d481ac0; azl3 hyperv-daemons 6.6.29.1-1 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: ipv4: check for NULL idev in ip_route_use_hint() syzbot was able to trigger a NULL deref in fib_validate_source() in an old tree [1]. It appears the bug exists in latest trees. All calls to __in_dev_get_rcu() must be checked for a NULL result. [1] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 2 PID: 3257 Comm: syz-executor.3 Not tainted 5.10.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:fib_validate_source+0xbf/0x15a0 net/ipv4/fib_frontend.c:425 Code: 18 f2 f2 f2 f2 42 c7 44 20 23 f3 f3 f3 f3 48 89 44 24 78 42 c6 44 20 27 f3 e8 5d 88 48 fc 4c 89 e8 48 c1 e8 03 48 89 44 24 18 <42> 80 3c 20 00 74 08 4c 89 ef e8 d2 15 98 fc 48 89 5c 24 10 41 bf RSP: 0018:ffffc900015fee40 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88800f7a4000 RCX: ffff88800f4f90c0 RDX: 0000000000000000 RSI: 0000000004001eac RDI: ffff8880160c64c0 RBP: ffffc900015ff060 R08: 0000000000000000 R09: ffff88800f7a4000 R10: 0000000000000002 R11: ffff88800f4f90c0 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88800f7a4000 FS: 00007f938acfe6c0(0000) GS:ffff888058c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f938acddd58 CR3: 000000001248e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_route_use_hint+0x410/0x9b0 net/ipv4/route.c:2231 ip_rcv_finish_core+0x2c4/0x1a30 net/ipv4/ip_input.c:327 ip_list_rcv_finish net/ipv4/ip_input.c:612 [inline] ip_sublist_rcv+0x3ed/0xe50 net/ipv4/ip_input.c:638 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:673 __netif_receive_skb_list_ptype net/core/dev.c:5572 [inline] __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5620 __netif_receive_skb_list net/core/dev.c:5672 [inline] netif_receive_skb_list_internal+0x9f9/0xdc0 net/core/dev.c:5764 netif_receive_skb_list+0x55/0x3e0 net/core/dev.c:5816 xdp_recv_frames net/bpf/test_run.c:257 [inline] xdp_test_run_batch net/bpf/test_run.c:335 [inline] bpf_test_run_xdp_live+0x1818/0x1d00 net/bpf/test_run.c:363 bpf_prog_test_run_xdp+0x81f/0x1170 net/bpf/test_run.c:1376 bpf_prog_test_run+0x349/0x3c0 kernel/bpf/syscall.c:3736 __sys_bpf+0x45c/0x710 kernel/bpf/syscall.c:5115 __do_sys_bpf kernel/bpf/syscall.c:5201 [inline] __se_sys_bpf kernel/bpf/syscall.c:5199 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5199

MediumCVSS 5.5 · v3.1—No exploit Fix available

BDU:2024-06488

Published: May 20, 2024
Updated: Oct 15, 2026
EPSS: 0.2% · 11th percentile
CWE: CWE-476

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel5.5 and later · before 5.10.216
linux linux kernel5.11 and later · before 5.15.158
linux linux kernel5.16 and later · before 6.1.90
linux linux kernel6.2 and later · before 6.6.30
linux linux kernel6.7 and later · before 6.8.9

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 5.5affected
- 02b24941619fcce3d280311ac73b1e461552e9c8 and later · before 7da0f91681c4902bc5c210356fdd963b04d5d1d4affected · git
- 02b24941619fcce3d280311ac73b1e461552e9c8 and later · before 03b5a9b2b526862b21bcc31976e393a6e63785d1affected · git
- 02b24941619fcce3d280311ac73b1e461552e9c8 and later · before 7a25bfd12733a8f38f8ca47c581f876c3d481ac0affected · git
- 02b24941619fcce3d280311ac73b1e461552e9c8 and later · before 8240c7308c941db4d9a0a91b54eca843c616a655affected · git
- 02b24941619fcce3d280311ac73b1e461552e9c8 and later · before c71ea3534ec0936fc57e6fb271c7cc6a2f68c295affected · git
- 02b24941619fcce3d280311ac73b1e461552e9c8 and later · before 58a4c9b1e5a3e53c9148e80b90e1e43897ce77d1affected · git
- before 5.5not affected · semver
- 5.10.216 and later · up to and including 5.10.*not affected · semver
- 5.15.158 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.90-1	6.1.90-1
Debian:13	linux	before 6.8.9-1	6.8.9-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
90Now
CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2024-36006May 20, 2024 · mlxsw: spectrum_acl_tcam: Fix incorrect list API usage
22Monitor
← EarlierCVE-2024-36007May 20, 2024 · mlxsw: spectrum_acl_tcam: Fix warning during rehash
22Monitor
Later →CVE-2020-36788May 21, 2024 · drm/nouveau: avoid a use-after-free when BO init fails
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	03b5a9b2b526862b21bcc31976e393a6e63785d1	Vendor (CNA)
Linux Linux	58a4c9b1e5a3e53c9148e80b90e1e43897ce77d1	Vendor (CNA)
Linux Linux	7a25bfd12733a8f38f8ca47c581f876c3d481ac0	Vendor (CNA)
Linux Linux	7da0f91681c4902bc5c210356fdd963b04d5d1d4	Vendor (CNA)
Linux Linux	8240c7308c941db4d9a0a91b54eca843c616a655	Vendor (CNA)
Linux Linux	c71ea3534ec0936fc57e6fb271c7cc6a2f68c295	Vendor (CNA)
azl3 hyperv-daemons 6.6.29.1-1 on Azure Linux 3.0	6.6.35.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0	6.6.35.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
azl3 kernel 6.6.29.1-5 on Azure Linux 3.0	6.6.35.1-4 · CBL-Mariner Releases	Microsoft (MSRC)
azl3 kernel 6.6.35.1-4 on Azure Linux 3.0	6.6.35.1-4 · CBL-Mariner Releases	Microsoft (MSRC)
cbl2 hyperv-daemons 5.15.153.1-1 on CBL Mariner 2.0	5.15.158.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
cbl2 hyperv-daemons 5.15.158.1-1 on CBL Mariner 2.0	5.15.158.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
cbl2 kernel 5.15.153.1-2 on CBL Mariner 2.0	5.15.158.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
cbl2 kernel 5.15.158.1-1 on CBL Mariner 2.0	5.15.158.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
debian:linux	6.1.90-1 · Debian:12	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

For records you follow, these changes also arrive as notifications. →

References

git.kernel.org/stable/c/03b5a9b2b526862b21bcc31976e393a6e63785d1

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records