Trending
CVE-2024-27398

CVE detail

CVE-2024-27398

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout When the sco connection is established and then, the sco socket is releasing, timeout_work will be scheduled to judge whether the sco disconnection is timeout. The sock will be deallocated later, but it is dereferenced again in sco_sock_timeout. As a result, the use-after-free bugs will happen. The root cause is shown below: Cleanup Thread | Worker Thread sco_sock_release | sco_sock_close | __sco_sock_close | sco_sock_set_timer | schedule_delayed_work | sco_sock_kill | (wait a time) sock_put(sk) //FREE | sco_sock_timeout | sock_hold(sk) //USE The KASAN report triggered by POC is shown below: [ 95.890016] ================================================================== [ 95.890496] BUG: KASAN: slab-use-after-free in sco_sock_timeout+0x5e/0x1c0 [ 95.890755] Write of size 4 at addr ffff88800c388080 by task kworker/0:0/7 ... [ 95.890755] Workqueue: events sco_sock_timeout [ 95.890755] Call Trace: [ 95.890755] <TASK> [ 95.890755] dump_stack_lvl+0x45/0x110 [ 95.890755] print_address_description+0x78/0x390 [ 95.890755] print_report+0x11b/0x250 [ 95.890755] ? __virt_addr_valid+0xbe/0xf0 [ 95.890755] ? sco_sock_timeout+0x5e/0x1c0 [ 95.890755] kasan_report+0x139/0x170 [ 95.890755] ? update_load_avg+0xe5/0x9f0 [ 95.890755] ? sco_sock_timeout+0x5e/0x1c0 [ 95.890755] kasan_check_range+0x2c3/0x2e0 [ 95.890755] sco_sock_timeout+0x5e/0x1c0 [ 95.890755] process_one_work+0x561/0xc50 [ 95.890755] worker_thread+0xab2/0x13c0 [ 95.890755] ? pr_cont_work+0x490/0x490 [ 95.890755] kthread+0x279/0x300 [ 95.890755] ? pr_cont_work+0x490/0x490 [ 95.890755] ? kthread_blkcg+0xa0/0xa0 [ 95.890755] ret_from_fork+0x34/0x60 [ 95.890755] ? kthread_blkcg+0xa0/0xa0 [ 95.890755] ret_from_fork_asm+0x11/0x20 [ 95.890755] </TASK> [ 95.890755] [ 95.890755] Allocated by task 506: [ 95.890755] kasan_save_track+0x3f/0x70 [ 95.890755] __kasan_kmalloc+0x86/0x90 [ 95.890755] __kmalloc+0x17f/0x360 [ 95.890755] sk_prot_alloc+0xe1/0x1a0 [ 95.890755] sk_alloc+0x31/0x4e0 [ 95.890755] bt_sock_alloc+0x2b/0x2a0 [ 95.890755] sco_sock_create+0xad/0x320 [ 95.890755] bt_sock_create+0x145/0x320 [ 95.890755] __sock_create+0x2e1/0x650 [ 95.890755] __sys_socket+0xd0/0x280 [ 95.890755] __x64_sys_socket+0x75/0x80 [ 95.890755] do_syscall_64+0xc4/0x1b0 [ 95.890755] entry_SYSCALL_64_after_hwframe+0x67/0x6f [ 95.890755] [ 95.890755] Freed by task 506: [ 95.890755] kasan_save_track+0x3f/0x70 [ 95.890755] kasan_save_free_info+0x40/0x50 [ 95.890755] poison_slab_object+0x118/0x180 [ 95.890755] __kasan_slab_free+0x12/0x30 [ 95.890755] kfree+0xb2/0x240 [ 95.890755] __sk_destruct+0x317/0x410 [ 95.890755] sco_sock_release+0x232/0x280 [ 95.890755] sock_close+0xb2/0x210 [ 95.890755] __fput+0x37f/0x770 [ 95.890755] task_work_run+0x1ae/0x210 [ 95.890755] get_signal+0xe17/0xf70 [ 95.890755] arch_do_signal_or_restart+0x3f/0x520 [ 95.890755] syscall_exit_to_user_mode+0x55/0x120 [ 95.890755] do_syscall_64+0xd1/0x1b0 [ 95.890755] entry_SYSCALL_64_after_hwframe+0x67/0x6f [ 95.890755] [ 95.890755] The buggy address belongs to the object at ffff88800c388000 [ 95.890755] which belongs to the cache kmalloc-1k of size 1024 [ 95.890755] The buggy address is located 128 bytes inside of [ 95.890755] freed 1024-byte region [ffff88800c388000, ffff88800c388400) [ 95.890755] [ 95.890755] The buggy address belongs to the physical page: [ 95.890755] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800c38a800 pfn:0xc388 [ 95.890755] head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 95.890755] ano ---truncated---

CVSS 8.0 · HighBuzz score 46.3

Buzz score

Why this CVE is surfacing

Buzz score total 46.3

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 28.3 · diversity 18.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

28.3

16 evidence mentions in the snapshot

Diversity score

18.0

5 sources across 3 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

16 source links · newest first

https://security.netapp.com/advisory/ntap-20240912-0012/security.netapp.com
No excerpt available.
Exploitsecurity.netapp.comMay 14, 2024, 3:12 PM
https://lists.fedoraproject.org/archives/list/[email protected]/message/OTB4HWU2PTVW5NEYHHLOCXDKG3PYA534/lists.fedoraproject.org
No excerpt available.
Third Party Advisorylists.fedoraproject.orgMay 14, 2024, 3:12 PM
https://lists.fedoraproject.org/archives/list/[email protected]/message/DW2MIOIMOFUSNLHLRYX23AFR36BMKD65/lists.fedoraproject.org
No excerpt available.
Third Party Advisorylists.fedoraproject.orgMay 14, 2024, 3:12 PM
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmllists.debian.org
No excerpt available.
Vendor Advisorylists.debian.orgMay 14, 2024, 3:12 PM
https://lists.debian.org/debian-lts-announce/2024/06/msg00019.htmllists.debian.org
No excerpt available.
Vendor Advisorylists.debian.orgMay 14, 2024, 3:12 PM
http://www.openwall.com/lists/oss-security/2024/11/30/2www.openwall.com
No excerpt available.
Exploitwww.openwall.comMay 14, 2024, 3:12 PM
http://www.openwall.com/lists/oss-security/2024/11/30/1www.openwall.com
No excerpt available.
Exploitwww.openwall.comMay 14, 2024, 3:12 PM
http://www.openwall.com/lists/oss-security/2024/11/29/1www.openwall.com
No excerpt available.
Exploitwww.openwall.comMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/bfab2c1f7940a232cd519e82fff137e308abfd93git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/6a18eeb1b3bbc67c20d9609c31dca6a69b4bcde5git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/50c2037fc28df870ef29d9728c770c8955d32178git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/483bc08181827fc475643272ffb69c533007e546git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/33a6e92161a78c1073d90e27abe28d746feb0a53git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/3212afd00e3cda790fd0583cb3eaef8f9575a014git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/1b33d55fb7355e27f8c82cd4ecd560f162469249git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM
https://git.kernel.org/stable/c/012363cb1bec5f33a7b94629ab2c1086f30280f2git.kernel.org
No excerpt available.
Exploitgit.kernel.orgMay 14, 2024, 3:12 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2024-27398.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:o:debian:debian_linuxSearch this product on Shodan
cpe:2.3:o:fedoraproject:fedoraSearch this product on Shodan
cpe:2.3:o:linux:linux_kernelSearch this product on Shodan

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Metadata

Canonical fields

NVD status

Modified

Published

May 14, 2024

Modified

Aug 4, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Adjacent. The attacker must reach the same or an adjacent network.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): Low. The attacker needs basic user-level privileges.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses