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CVE-2026-47331

7.8 HIGH

Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list

Published: 2026-05-28 · Last updated: 2026-06-09

Severity and scoring

CVSS
7.8 HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416

Affected products

VendorProduct
canonicalubuntu_linux

Description

Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An unprivileged local user could trigger the race condition that can lead to a use-after-free (UAF) and, theoretically, arbitrary code execution.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-47337 — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AF_INET/AF_INET6 socket ... (3.3 LOW)
  • CVE-2026-47336 — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/AF_INET6 socket mediation code (3.3 LOW)
  • CVE-2026-47335 — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications (5.5 MEDIUM)
  • CVE-2026-47334 — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock in notification handling code (5.5 MEDIUM)
  • CVE-2026-47333 — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the size of an internal buffer, l... (7.8 HIGH)

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)