{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"e91274cc7ed88ab5bdc62d426067c82b0b118a0b","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"a7a713dfb5f9477345450f27c7c0741864511192","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"17e156a94e94a906a570dbf9b48877956c60bef8","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"18e8f0c4f826fb08c2d3825cdd6c57e24b207e0a","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"dffd03422ae6a459039c8602f410e6c0f4cbc6c8","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"f4d80b16ecc4229f7e6345158ef34c36be323f0e","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"64b378db28a967f7b271b055380c2360279aa424","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"d13a3824bfd2b4774b671a75cf766a16637a0e67","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.295","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.239","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.186","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.142","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.95","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.35","versionType":"semver"},{"lessThanOrEqual":"6.15.*","status":"unaffected","version":"6.15.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.16","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2025-38323","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atm: add lec_mutex\n\nsyzbot found its way in net/atm/lec.c, and found an error path\nin lecd_attach() could leave a dangling pointer in dev_lec[].\n\nAdd a mutex to protect dev_lecp[] uses from lecd_attach(),\nlec_vcc_attach() and lec_mcast_attach().\n\nFollowing patch will use this mutex for /proc/net/atm/lec.\n\nBUG: KASAN: slab-use-after-free in lecd_attach net/atm/lec.c:751 [inline]\nBUG: KASAN: slab-use-after-free in lane_ioctl+0x2224/0x23e0 net/atm/lec.c:1008\nRead of size 8 at addr ffff88807c7b8e68 by task syz.1.17/6142\n\nCPU: 1 UID: 0 PID: 6142 Comm: syz.1.17 Not tainted 6.16.0-rc1-syzkaller-00239-g08215f5486ec #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025\nCall Trace:\n <TASK>\n  __dump_stack lib/dump_stack.c:94 [inline]\n  dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n  print_address_description mm/kasan/report.c:408 [inline]\n  print_report+0xcd/0x680 mm/kasan/report.c:521\n  kasan_report+0xe0/0x110 mm/kasan/report.c:634\n  lecd_attach net/atm/lec.c:751 [inline]\n  lane_ioctl+0x2224/0x23e0 net/atm/lec.c:1008\n  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159\n  sock_do_ioctl+0x118/0x280 net/socket.c:1190\n  sock_ioctl+0x227/0x6b0 net/socket.c:1311\n  vfs_ioctl fs/ioctl.c:51 [inline]\n  __do_sys_ioctl fs/ioctl.c:907 [inline]\n  __se_sys_ioctl fs/ioctl.c:893 [inline]\n  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893\n  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n  do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n </TASK>\n\nAllocated by task 6132:\n  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\n  poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\n  __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394\n  kasan_kmalloc include/linux/kasan.h:260 [inline]\n  __do_kmalloc_node mm/slub.c:4328 [inline]\n  __kvmalloc_node_noprof+0x27b/0x620 mm/slub.c:5015\n  alloc_netdev_mqs+0xd2/0x1570 net/core/dev.c:11711\n  lecd_attach net/atm/lec.c:737 [inline]\n  lane_ioctl+0x17db/0x23e0 net/atm/lec.c:1008\n  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159\n  sock_do_ioctl+0x118/0x280 net/socket.c:1190\n  sock_ioctl+0x227/0x6b0 net/socket.c:1311\n  vfs_ioctl fs/ioctl.c:51 [inline]\n  __do_sys_ioctl fs/ioctl.c:907 [inline]\n  __se_sys_ioctl fs/ioctl.c:893 [inline]\n  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893\n  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n  do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFreed by task 6132:\n  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47\n  kasan_save_track+0x14/0x30 mm/kasan/common.c:68\n  kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576\n  poison_slab_object mm/kasan/common.c:247 [inline]\n  __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264\n  kasan_slab_free include/linux/kasan.h:233 [inline]\n  slab_free_hook mm/slub.c:2381 [inline]\n  slab_free mm/slub.c:4643 [inline]\n  kfree+0x2b4/0x4d0 mm/slub.c:4842\n  free_netdev+0x6c5/0x910 net/core/dev.c:11892\n  lecd_attach net/atm/lec.c:744 [inline]\n  lane_ioctl+0x1ce8/0x23e0 net/atm/lec.c:1008\n  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159\n  sock_do_ioctl+0x118/0x280 net/socket.c:1190\n  sock_ioctl+0x227/0x6b0 net/socket.c:1311\n  vfs_ioctl fs/ioctl.c:51 [inline]\n  __do_sys_ioctl fs/ioctl.c:907 [inline]\n  __se_sys_ioctl fs/ioctl.c:893 [inline]\n  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893","epss":{"date":"2026-11-05","percentile":0.11545,"score":0.00212},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793912553036,"publishedAt":1752135298212,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e91274cc7ed88ab5bdc62d426067c82b0b118a0b"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a7a713dfb5f9477345450f27c7c0741864511192"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/17e156a94e94a906a570dbf9b48877956c60bef8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/18e8f0c4f826fb08c2d3825cdd6c57e24b207e0a"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/dffd03422ae6a459039c8602f410e6c0f4cbc6c8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f4d80b16ecc4229f7e6345158ef34c36be323f0e"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/64b378db28a967f7b271b055380c2360279aa424"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/d13a3824bfd2b4774b671a75cf766a16637a0e67"},{"source":"ADP: CVE","tags":[],"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"source":"ADP: CVE","tags":[],"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}],"remediation":[],"revision":"b19facef8c754e6c921844dcf81c8d0a2972b49419042ce55693e6bca3fbba65","sources":[{"modifiedAt":1793912553036,"name":"CNA: Linux","retrievedAt":1793913655534,"url":"https://www.cve.org/CVERecord?id=CVE-2025-38323"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793913670830,"url":"https://api.first.org/data/v1/epss?cve=CVE-2025-38323"}],"ssvc":{"assessedAt":1793912074639,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"net: atm: add lec_mutex","updatedAt":1793913670830}