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CVE PROGRAM SOURCE RECORDUnscored

CVE-2023-53731

netlink: fix potential deadlock in netlink_set_err()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: netlink: fix potential deadlock in netlink_set_err() syzbot reported a possible deadlock in netlink_set_err() [1] A similar issue was fixed in commit 1d482e666b8e ("netlink: disable IRQs for netlink_lock_table()") in netlink_lock_table() This patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump() which were not covered by cited commit. [1] WARNING: possible irq lock inversion dependency detected 6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted syz-executor.2/23011 just changed the state of lock: ffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612 but this lock was taken by another, SOFTIRQ-safe lock in the past: (&local->queue_stop_reason_lock){..-.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(nl_table_lock); local_irq_disable(); lock(&local->queue_stop_reason_lock); lock(nl_table_lock); <Interrupt> lock(&local->queue_stop_reason_lock); *** DEADLOCK ***

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 82b2ea5f904b3826934df4a00f3b8806272185f6 to < c09e8e3f7fd432984bf5422302b093d2371dfc48affected
  • 59fba11d649854134c75ad88c8adafa9304ac419 to < 4b9adb8d4a62ff7608d4a7d4eb42036a88f30980affected
  • 21df0c2e7d195de4a3c650de9361b3037fa6c59a to < 8f6652ed2ad98fe6d13b903483d9257762ab2ec6affected
  • 1d6d43d4805da9b3fa0f5841e8b1083c89868f35 to < cde7b90e0539a3b11da377e463dfd2288a162dbfaffected
  • 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d to < a641240b7e071c5538dc0e7894ece833fce459ddaffected
  • 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d to < 61ffe8b1ee084e5c82a4e4bbf9e7b68e0c06e464affected
  • 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d to < eb8e27c8fa9397b4a7b181c48fa58157dbe9902eaffected
  • 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d to < 1556ba034b95cfd4f75ea93c1a2679ae0444bba1affected
  • 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d to < 8d61f926d42045961e6b65191c09e3678d86a9cfaffected
  • 5f155c4046200f067b1dc3140ea99ef56e4e0b74affected
  • a8e9111a8625dd11e70edd61f7a1ccd26c041442affected
  • 76cc8e04f38c2bbfcba07f62864a011f142bd40caffected
  • 4.14.237 to < 4.14.322affected
  • 4.19.195 to < 4.19.291affected
  • 5.4.126 to < 5.4.251affected
  • 5.10.44 to < 5.10.188affected
  • 4.4.273 to < 4.5affected
  • 4.9.273 to < 4.10affected
  • 5.12.11 to < 5.13affected

Linux Linux

Default version status: affected

  • 5.13affected
  • 0 to < 5.13unaffected
  • 4.14.322 to ≤ 4.14.*unaffected
  • 4.19.291 to ≤ 4.19.*unaffected
  • 5.4.251 to ≤ 5.4.*unaffected
  • 5.10.188 to ≤ 5.10.*unaffected
  • 5.15.121 to ≤ 5.15.*unaffected
  • 6.1.39 to ≤ 6.1.*unaffected
  • 6.3.13 to ≤ 6.3.*unaffected
  • 6.4.4 to ≤ 6.4.*unaffected
  • 6.5 to ≤ *unaffected

References