Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-27398
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-14 15:12:28 UTC
Updated2026-08-04 11:17:43 UTC
DescriptionIn 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---

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

Problem Types: CWE-416

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8HIGHCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8HIGHCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 39 All All All
Operating System Fedoraproject Fedora 40 All All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 48669c81a65628ef234cbdd91b9395952c7c27fe 1b33d55fb7355e27f8c82cd4ecd560f162469249 git Not specified
CNA Linux Linux affected 37d7ae2b0578f2373674a755402ee722e96edc08 3212afd00e3cda790fd0583cb3eaef8f9575a014 git Not specified
CNA Linux Linux affected a1073aad497d0d071a71f61b721966a176d50c08 33a6e92161a78c1073d90e27abe28d746feb0a53 git Not specified
CNA Linux Linux affected ba316be1b6a00db7126ed9a39f9bee434a508043 6a18eeb1b3bbc67c20d9609c31dca6a69b4bcde5 git Not specified
CNA Linux Linux affected ba316be1b6a00db7126ed9a39f9bee434a508043 bfab2c1f7940a232cd519e82fff137e308abfd93 git Not specified
CNA Linux Linux affected ba316be1b6a00db7126ed9a39f9bee434a508043 012363cb1bec5f33a7b94629ab2c1086f30280f2 git Not specified
CNA Linux Linux affected ba316be1b6a00db7126ed9a39f9bee434a508043 50c2037fc28df870ef29d9728c770c8955d32178 git Not specified
CNA Linux Linux affected ba316be1b6a00db7126ed9a39f9bee434a508043 483bc08181827fc475643272ffb69c533007e546 git Not specified
CNA Linux Linux affected fea63ccd928c01573306983346588b26cffb5572 git Not specified
CNA Linux Linux affected ec1f74319bb35c1c90c25014ec0f6ea6c3ca2134 git Not specified
CNA Linux Linux affected b657bba82ff6a007d84fd076bd73b11131726a2b git Not specified
CNA Linux Linux affected 4.19.207 4.19.314 semver Not specified
CNA Linux Linux affected 5.4.148 5.4.276 semver Not specified
CNA Linux Linux affected 5.10.67 5.10.217 semver Not specified
CNA Linux Linux affected 4.14.263 4.15 semver Not specified
CNA Linux Linux affected 5.13.19 5.14 semver Not specified
CNA Linux Linux affected 5.14.6 5.15 semver Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 4.19.314 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.276 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.217 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.159 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.91 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.31 6.6.* semver Not specified
CNA Linux Linux unaffected 6.8.10 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1b33d55fb7355e27f8c82cd4ecd560f162469249 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
security.netapp.com/advisory/ntap-20240912-0012 af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
www.openwall.com/lists/oss-security/2024/11/29/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
git.kernel.org/stable/c/bfab2c1f7940a232cd519e82fff137e308abfd93 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
www.openwall.com/lists/oss-security/2024/11/30/2 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Third Party Advisory
www.openwall.com/lists/oss-security/2024/11/30/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
git.kernel.org/stable/c/33a6e92161a78c1073d90e27abe28d746feb0a53 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/6a18eeb1b3bbc67c20d9609c31dca6a69b4bcde5 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00019.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Third Party Advisory
git.kernel.org/stable/c/012363cb1bec5f33a7b94629ab2c1086f30280f2 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/483bc08181827fc475643272ffb69c533007e546 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/3212afd00e3cda790fd0583cb3eaef8f9575a014 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/50c2037fc28df870ef29d9728c770c8955d32178 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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