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CVE-2024-40959

5.5 · MEDIUM
Published Jul 12, 2024 linux CWE-476 EPSS 0.28% (20th pctl)

Overview

CVE-2024-40959 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

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

ip6_dst_idev() can return NULL, xfrm6_get_saddr() must act accordingly.

syzbot reported:

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI

KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]

CPU: 1 PID: 12 Comm: kworker/u8:1 Not tainted 6.10.0-rc2-syzkaller-00383-gb8481381d4e2 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024

Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker

RIP: 0010:xfrm6_get_saddr+0x93/0x130 net/ipv6/xfrm6_policy.c:64

Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 97 00 00 00 4c 8b ab d8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 86 00 00 00 4d 8b 6d 00 e8 ca 13 47 01 48 b8 00

RSP: 0018:ffffc90000117378 EFLAGS: 00010246

RAX: dffffc0000000000 RBX: ffff88807b079dc0

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 2.6.12, < 4.19.317 Affected

References

Ref git.kernel.org/stable/c/20427b85781aca0ad072851f6907a3d4b2fed8d1 Ref git.kernel.org/stable/c/600a62b4232ac027f788c3ca395bc2333adeaacf Ref git.kernel.org/stable/c/83c02fb2cc0afee5bb53cddf3f34f045f654ad6a Ref git.kernel.org/stable/c/9f30f1f1a51d91e19f5a09236bb0b59e6a07ad08 Ref git.kernel.org/stable/c/c71761292d4d002a8eccb57b86792c4e3b3eb3c7 Ref git.kernel.org/stable/c/caf0bec84c62fb1cf6f7c9f0e8c857c87f8adbc3 Ref git.kernel.org/stable/c/d46401052c2d5614da8efea5788532f0401cb164 Ref git.kernel.org/stable/c/f897d7171652fcfc76d042bfec798b010ee89e41 Ref git.kernel.org/stable/c/20427b85781aca0ad072851f6907a3d4b2fed8d1 Ref git.kernel.org/stable/c/600a62b4232ac027f788c3ca395bc2333adeaacf

Frequently Asked Questions

What is CVE-2024-40959?

CVE-2024-40959 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-40959?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-40959?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-40959?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-40959 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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