Answer in brief
CVE-2026-53005 records a High severity (CVSS 7.8) vulnerability in af_unix: Drop all SCM attributes for SOCKMAP.. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <866e69a824b46e682b8fb923be321b585e634874 || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <301bdc558a5eb4057473204d35e2608e682aaafb || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <48c41cd2e04af4b2cdef19e2d00994ae82952f14 || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <e0a71cbf0c1906a2eccbe69dd7d7f36fd1511d66 || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <b34a1d83c74a124c968b5adb25c809db3e2eb86a || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <965dc93481d1b80d341bdd16c27b16fe197175ee | 866e69a824b46e682b8fb923be321b585e634874, 301bdc558a5eb4057473204d35e2608e682aaafb, 48c41cd2e04af4b2cdef19e2d00994ae82952f14, e0a71cbf0c1906a2eccbe69dd7d7f36fd1511d66, b34a1d83c74a124c968b5adb25c809db3e2eb86a, 965dc93481d1b80d341bdd16c27b16fe197175ee |
| Linux/Linuxgeneric | >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <48c41cd2e04af4b2cdef19e2d00994ae82952f14 || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <e0a71cbf0c1906a2eccbe69dd7d7f36fd1511d66 || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <b34a1d83c74a124c968b5adb25c809db3e2eb86a || >=c63829182c37c2d6d0608976d15fa61ebebe9e6b <965dc93481d1b80d341bdd16c27b16fe197175ee | 48c41cd2e04af4b2cdef19e2d00994ae82952f14, e0a71cbf0c1906a2eccbe69dd7d7f36fd1511d66, b34a1d83c74a124c968b5adb25c809db3e2eb86a, 965dc93481d1b80d341bdd16c27b16fe197175ee |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
In the Linux kernel, the following vulnerability has been resolved: af_unix: Drop all SCM attributes for SOCKMAP. SOCKMAP can hide inflight fd from AF_UNIX GC. When a socket in SOCKMAP receives skb with inflight fd, sk_psock_verdict_data_ready() looks up the mapped socket and enqueue skb to its psock->ingress_skb. Since neither the old nor the new GC can inspect the psock queue, the hidden skb leaks the inflight sockets. Note that this cannot be detected via kmemleak because inflight sockets are linked to a global list. In addition, SOCKMAP redirect breaks the Tarjan-based GC's assumption that unix_edge.successor is always alive, which is no longer true once skb is redirected, resulting in use-after-free below. [0] Moreover, SOCKMAP does not call scm_stat_del() properly, so unix_show_fdinfo() could report an incorrect fd count. sk_msg_recvmsg() does not support any SCM attributes in the first place. Let's drop all SCM attributes before passing skb to the SOCKMAP layer. [0]: BUG: KASAN: slab-use-after-free in unix_del_edges (net/unix/garbage.c:118 net/unix/garbage.c:181 net/unix/garbage.c:251) Read of size 8 at addr ffff888125362670 by task kworker/56:1/496 CPU: 56 UID: 0 PID: 496 Comm: kworker/56:1 Not tainted 7.0.0-rc7-00263-gb9d8b856689d #3 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014 Workqueue: events sk_psock_backlog Call Trace: <TASK> dump_stack_lvl (lib/dump_stack.c:122) print_report (mm/kasan/report.c:379) kasan_report (mm/kasan/report.c:597) unix_del_edges (net/unix/garbage.c:118 net/unix/garbage.c:181 net/unix/garbage.c:251) unix_destroy_fpl (net/unix/garbage.c:317) unix_destruct_scm (./include/net/scm.h:80 ./include/net/scm.h:86 net/unix/af_unix.c:1976) sk_psock_backlog (./include/linux/skbuff.h:?) process_scheduled_works (kernel/workqueue.c:?) worker_thread (kernel/workqueue.c:?) kthread (kernel/kthread.c:438) ret_from_fork (arch/x86/kernel/process.c:164) ret_from_fork_asm (arch/x86/entry/entry_64.S:258) </TASK> Allocated by task 955: kasan_save_track (mm/kasan/common.c:58 mm/kasan/common.c:78) __kasan_slab_alloc (mm/kasan/common.c:369) kmem_cache_alloc_noprof (mm/slub.c:4539) sk_prot_alloc (net/core/sock.c:2240) sk_alloc (net/core/sock.c:2301) unix_create1 (net/unix/af_unix.c:1099) unix_create (net/unix/af_unix.c:1169) __sock_create (net/socket.c:1606) __sys_socketpair (net/socket.c:1811) __x64_sys_socketpair (net/socket.c:1863 net/socket.c:1860 net/socket.c:1860) do_syscall_64 (arch/x86/entry/syscall_64.c:?) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Freed by task 496: kasan_save_track (mm/kasan/common.c:58 mm/kasan/common.c:78) kasan_save_free_info (mm/kasan/generic.c:587) __kasan_slab_free (mm/kasan/common.c:287) kmem_cache_free (mm/slub.c:6165) __sk_destruct (net/core/sock.c:2282 net/core/sock.c:2384) sk_psock_destroy (./include/net/sock.h:?) process_scheduled_works (kernel/workqueue.c:?) worker_thread (kernel/workqueue.c:?) kthread (kernel/kthread.c:438) ret_from_fork (arch/x86/kernel/process.c:164) ret_from_fork_asm (arch/x86/entry/entry_64.S:258)
Quoted source text, attributed separately from HOL analysis.