{"id":"DEBIAN-CVE-2023-53136","details":"In the Linux kernel, the following vulnerability has been resolved:  af_unix: fix struct pid leaks in OOB support  syzbot reported struct pid leak [1].  Issue is that queue_oob() calls maybe_add_creds() which potentially holds a reference on a pid.  But skb-\u003edestructor is not set (either directly or by calling unix_scm_to_skb())  This means that subsequent kfree_skb() or consume_skb() would leak this reference.  In this fix, I chose to fully support scm even for the OOB message.  [1] BUG: memory leak unreferenced object 0xffff8881053e7f80 (size 128): comm \"syz-executor242\", pid 5066, jiffies 4294946079 (age 13.220s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [\u003cffffffff812ae26a\u003e] alloc_pid+0x6a/0x560 kernel/pid.c:180 [\u003cffffffff812718df\u003e] copy_process+0x169f/0x26c0 kernel/fork.c:2285 [\u003cffffffff81272b37\u003e] kernel_clone+0xf7/0x610 kernel/fork.c:2684 [\u003cffffffff812730cc\u003e] __do_sys_clone+0x7c/0xb0 kernel/fork.c:2825 [\u003cffffffff849ad699\u003e] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [\u003cffffffff849ad699\u003e] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 [\u003cffffffff84a0008b\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd","modified":"2026-09-15T09:03:02.492330366Z","published":"2025-05-02T16:15:32.540Z","upstream":["CVE-2023-53136"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53136"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53136.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53136.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53136.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}]}