--- id: CVE-2024-35976 title: |- In the Linux kernel, the following vulnerability has been resolved: xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING syzbot reported an illegal copy in xsk_setsockopt() [1] Make sure to validate setsockopt() @optlen parame… summary: |- In the Linux kernel, the following vulnerability has been resolved: xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING syzbot reported an illegal copy in xsk_setsockopt() [1] Make sure to validate setsockopt() @optlen parame… severity: high cvss: 7.1 cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H' cwe: - CWE-787 vendor: linux product: linux_kernel affected: - 'linux_kernel >= 4.18, < 4.19.317' - 'linux_kernel >= 4.20, < 5.4.278' - 'linux_kernel >= 5.5, < 5.10.216' - 'linux_kernel >= 5.11, < 5.15.156' - 'linux_kernel >= 5.16, < 6.1.87' - 'linux_kernel >= 6.2, < 6.6.28' - 'linux_kernel >= 6.7, < 6.8.7' - linux_kernel = 6.9 patched: - linux_kernel 6.8.7 published: '2024-05-20' updated: '2026-10-15' sourceUpdated: '2026-10-15T01:18:15.357' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-35976' references: - url: 'https://git.kernel.org/stable/c/0b45c25d60e38f5c2cb6823f886773a34323306d' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/237f3cf13b20db183d3706d997eedc3c49eacd44' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/2a523f14a3f53b46ff0e1fafd215b0bc5f6783aa' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/2eb979fbb2479bcd7e049f2f9978b6590dd8a0e6' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/a82984b3c6a7e8c7937dba6e857ddf829d149417' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/b143e19dc28c3211f050f7848d87d9b0a170e10c' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/beb99266830520e15fbc6ca8cc5a5240d76851fd' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/f0a068de65d5b7358e9aff792716afa9333f3922' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/0b45c25d60e38f5c2cb6823f886773a34323306d' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/237f3cf13b20db183d3706d997eedc3c49eacd44' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/2a523f14a3f53b46ff0e1fafd215b0bc5f6783aa' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/2eb979fbb2479bcd7e049f2f9978b6590dd8a0e6' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/a82984b3c6a7e8c7937dba6e857ddf829d149417' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/b143e19dc28c3211f050f7848d87d9b0a170e10c' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/beb99266830520e15fbc6ca8cc5a5240d76851fd' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/f0a068de65d5b7358e9aff792716afa9333f3922' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e - url: 'https://cert-portal.siemens.com/productcert/html/ssa-613116.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e tags: - nvd - cve.org epss: 0.00259 epssPercentile: 0.17529 ingestedAt: '2026-10-15T03:30:12.694Z' ssvc: exploitation: none automatable: 'no' technicalImpact: total timestamp: '2024-05-20T14:37:56.972231Z' --- ## Overview In the Linux kernel, the following vulnerability has been resolved: xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING syzbot reported an illegal copy in xsk_setsockopt() [1] Make sure to validate setsockopt() @optlen parameter. [1] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr include/linux/sockptr.h:55 [inline] BUG: KASAN: slab-out-of-bounds in xsk_setsockopt+0x909/0xa40 net/xdp/xsk.c:1420 Read of size 4 at addr ffff888028c6cde3 by task syz-executor.0/7549 CPU: 0 PID: 7549 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] copy_from_sockptr include/linux/sockptr.h:55 [inline] xsk_setsockopt+0x909/0xa40 net/xdp/xsk.c:1420 do_sock_setsockopt+0x3af/0x720 net/socket.c:2311 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fb40587de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb40665a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fb4059abf80 RCX: 00007fb40587de69 RDX: 0000000000000005 RSI: 000000000000011b RDI: 0000000000000006 RBP: 00007fb4058ca47a R08: 0000000000000002 R09: 0000000000000000 R10: 0000000020001980 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb4059abf80 R15: 00007fff57ee4d08 Allocated by task 7549: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3966 [inline] __kmalloc+0x233/0x4a0 mm/slub.c:3979 kmalloc include/linux/slab.h:632 [inline] __cgroup_bpf_run_filter_setsockopt+0xd2f/0x1040 kernel/bpf/cgroup.c:1869 do_sock_setsockopt+0x6b4/0x720 net/socket.c:2293 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 The buggy address belongs to the object at ffff888028c6cde0 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 1 bytes to the right of allocated 2-byte region [ffff888028c6cde0, ffff888028c6cde2) The buggy address belongs to the physical page: page:ffffea0000a31b00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888028c6c9c0 pfn:0x28c6c anon flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff888014c41280 0000000000000000 dead000000000001 raw: ffff888028c6c9c0 0000000080800057 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 6648, tgid 6644 (syz-executor.0), ts 133906047828, free_ts 133859922223 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c: ---truncated--- ## Affected - `linux_kernel >= 4.18, < 4.19.317` - `linux_kernel >= 4.20, < 5.4.278` - `linux_kernel >= 5.5, < 5.10.216` - `linux_kernel >= 5.11, < 5.15.156` - `linux_kernel >= 5.16, < 6.1.87` - `linux_kernel >= 6.2, < 6.6.28` - `linux_kernel >= 6.7, < 6.8.7` - `linux_kernel = 6.9` ## Remediation Upgrade past the affected range: - `linux_kernel 6.8.7`