CVE-2026-80764 Affecting kernel-livepatch-6_4_0-150700_53_90-default package, versions <1-150700.15.3.1
Threat Intelligence
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Test your applications- Snyk IDSNYK-SLES157-KERNELLIVEPATCH6401507005390DEFAULT-22231930
- published5 Nov 2026
- disclosed3 Nov 2026
Introduced: 3 Nov 2026
NewCVE-2026-80764 (opens in a new tab)How to fix?
Upgrade SLES:15.7 kernel-livepatch-6_4_0-150700_53_90-default to version 1-150700.15.3.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6_4_0-150700_53_90-default package and not the kernel-livepatch-6_4_0-150700_53_90-default package as distributed by SLES.
See How to fix? for SLES:15.7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_event: fix LE list UAF on reset
hci_cc_reset() clears the LE accept and resolving lists without taking hdev->lock. Other command-complete handlers serialize updates to these lists with that lock, and the debugfs readers hold it while walking them.
This permits the reset completion and a debugfs read to interleave as follows:
hci_rx_work debugfs reader
lock hdev->lock
fetch current entry
list_del(entry) kfree(entry) read entry fields
The reader then dereferences a freed list entry and may follow its stale next pointer.
KASAN reported:
BUG: KASAN: slab-use-after-free in white_list_show+0x15f/0x180 Read of size 1 at addr ffff8881015dab16 by task poc/95
Call Trace: white_list_show+0x15f/0x180 seq_read_iter+0x3ff/0x1190 seq_read+0x267/0x3d0 vfs_read+0x177/0xa20 ksys_read+0xf7/0x1c0
Allocated by task 91: hci_bdaddr_list_add+0x1a6/0x3a0 hci_cc_le_add_to_accept_list+0xab/0x140 hci_cmd_complete_evt+0x26c/0x9a0 hci_event_packet+0x454/0xb20 hci_rx_work+0x293/0x730
Freed by task 90: kfree+0x131/0x3c0 hci_bdaddr_list_clear+0xd8/0x160 hci_cc_reset+0x28a/0x370 hci_cmd_complete_evt+0x26c/0x9a0 hci_event_packet+0x454/0xb20 hci_rx_work+0x293/0x730
Take hdev->lock around both list clears. This matches the existing mutation and traversal locking convention.
References
- https://www.suse.com/security/cve/CVE-2026-80764.html
- https://bugzilla.suse.com/1279493
- https://git.kernel.org/stable/c/0628cc9b2fa29985a7b8c774741f8a736b0f5e7c
- https://git.kernel.org/stable/c/25b05e3ce31d954540e99954bcc66cbceb27ab35
- https://git.kernel.org/stable/c/33af47e847fe4a28b109673affb5874015d54f5a
- https://git.kernel.org/stable/c/39a3afb91be3cb465f46ce7a8e5696d9e33edf93
- https://git.kernel.org/stable/c/8e68c380290b1dd64a0a512ce66d0264130c46ed
- https://git.kernel.org/stable/c/b55e83a4ba31d40deae22d4e4dc8c84083e953c6
- https://git.kernel.org/stable/c/d57702d4c55633c243da5a2fec37ae2ad4adb621