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CVE-2024-36938

5.5 · MEDIUM
Published May 30, 2024 linux CWE-476 EPSS 0.24% (15th pctl)

Overview

CVE-2024-36938 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 30, 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:

bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue

Fix NULL pointer data-races in sk_psock_skb_ingress_enqueue() which

syzbot reported [1].

[1]

BUG: KCSAN: data-race in sk_psock_drop / sk_psock_skb_ingress_enqueue

write to 0xffff88814b3278b8 of 8 bytes by task 10724 on cpu 1:

sk_psock_stop_verdict net/core/skmsg.c:1257 [inline]

sk_psock_drop+0x13e/0x1f0 net/core/skmsg.c:843

sk_psock_put include/linux/skmsg.h:459 [inline]

sock_map_close+0x1a7/0x260 net/core/sock_map.c:1648

unix_release+0x4b/0x80 net/unix/af_unix.c:1048

__sock_release net/socket.c:659 [inline]

sock_close+0x68/0x150 net/socket.c:1421

__fput+0x2c1/0x660 fs/file_table.c:422

__fput_sync+0x44/0x60 fs/file_table.c:507

__do_sys_close fs/open.c:1556 [inline]

__se_sys_close+0x101/0x1b0 fs/open.c:1541

__x64_sys_close+0x1f/0x30 fs/open.c:1541

do_syscall_64+0xd3/0x1d0

entry_SYSCALL_64_after_hwframe+0x6d/0x75

read to 0xffff888

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 >= 4.20, < 5.15.159 Affected

References

Ref git.kernel.org/stable/c/39dc9e1442385d6e9be0b6491ee488dddd55ae27 Ref git.kernel.org/stable/c/5965bc7535fb87510b724e5465ccc1a1cf00916d Ref git.kernel.org/stable/c/6648e613226e18897231ab5e42ffc29e63fa3365 Ref git.kernel.org/stable/c/772d5729b5ff0df0d37b32db600ce635b2172f80 Ref git.kernel.org/stable/c/b397a0ab8582c533ec0c6b732392f141fc364f87 Ref git.kernel.org/stable/c/c0809c128dad4c3413818384eb06a341633db973 Ref git.kernel.org/stable/c/39dc9e1442385d6e9be0b6491ee488dddd55ae27 Ref git.kernel.org/stable/c/5965bc7535fb87510b724e5465ccc1a1cf00916d Ref git.kernel.org/stable/c/6648e613226e18897231ab5e42ffc29e63fa3365 Ref git.kernel.org/stable/c/772d5729b5ff0df0d37b32db600ce635b2172f80

Frequently Asked Questions

What is CVE-2024-36938?

CVE-2024-36938 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-36938?

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-2024-36938?

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-2024-36938?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-36938 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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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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