CVE-2026-31408
8.8 HIGHIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missin...
Published: 2026-04-06 · Last updated: 2026-05-20
Severity and scoring
- CVSS
- 8.8 HIGH
- Vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-416
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately releases the lock without holding a reference to the socket. A concurrent close() can free the socket between the lock release and the subsequent sk->sk_state access, resulting in a use-after-free. Other functions in the same file (sco_sock_timeout(), sco_conn_del()) correctly use sco_sock_hold() to safely hold a reference under the lock. Fix by using sco_sock_hold() to take a reference before releasing the lock, and adding sock_put() on all exit paths.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-31408
- [Patch]https://git.kernel.org/stable/c/108b81514d8f2535eb16651495cefb2250528db3
- [Patch]https://git.kernel.org/stable/c/45aaca995e4a7a05b272a58e7ab2fff4f611b8f1
- [Patch]https://git.kernel.org/stable/c/598dbba9919c5e36c54fe1709b557d64120cb94b
- [Patch]https://git.kernel.org/stable/c/7197462e90b8ce15caa1ae15d4bc2bb8cd21b11e
- [Patch]https://git.kernel.org/stable/c/b0a7da0e3f7442545f071499beb36374714bb9de
- [Patch]https://git.kernel.org/stable/c/d57384e27d1ebf0047e3f00a6e1181b8be9857a2
- [Patch]https://git.kernel.org/stable/c/e76e8f0581ef555eacc11dbb095e602fb30a5361
Related CVEs
Same vendor
- CVE-2026-46273 — In the Linux kernel, the following vulnerability has been resolved: ibmveth: Disable GSO for packets with small MSS Some physical adapt... (8.6 HIGH)
- CVE-2026-46272 — In the Linux kernel, the following vulnerability has been resolved: coresight: tmc-etr: Fix race condition between sysfs and perf mode ... (4.7 MEDIUM)
- CVE-2026-46271 — In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: do WoW offloads only on primary link In case of multi... (7.8 HIGH)
- CVE-2026-46270 — In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() ... (8.4 HIGH)
- CVE-2026-46269 — In the Linux kernel, the following vulnerability has been resolved: pinctrl: canaan: k230: Fix NULL pointer dereference when parsing dev... (5.5 MEDIUM)
Same CWE
- CVE-2026-10640 — Zephyr's IPv6 Neighbor Discovery send paths (net_ipv6_send_na, net_ipv6_send_ns, net_ipv6_send_rs in subsys/net/ip/ipv6_nbr.c) updated th... (4.2 MEDIUM)
- CVE-2026-10639 — In Zephyr's native IPv4 stack, icmpv4_handle_echo_request() in subsys/net/ip/icmpv4.c builds an echo-reply packet (reply), hands it to ne... (4.8 MEDIUM)
- CVE-2026-10638 — subsys/net/ip/icmpv6.c reads the network interface from a net_pkt after that packet has been handed to net_try_send_data() (5.9 MEDIUM)
- CVE-2026-10637 — subsys/net/ip/ipv6_mld.c:mld_send() read the packet interface via net_pkt_iface(pkt) after net_send_data(pkt) returned successfully (5.9 MEDIUM)
- CVE-2026-10636 — In Zephyr's IPv4 IGMP implementation, igmp_send() in subsys/net/ip/igmp.c read the network interface back out of the packet via net_pkt_i... (3.7 LOW)