{"id":"CVE-2024-36939","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: Handle error of rpc_proc_register() in nfs_net_init().\n\nsyzkaller reported a warning [0] triggered while destroying immature\nnetns.\n\nrpc_proc_register() was called…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: Handle error of rpc_proc_register() in nfs_net_init().\n\nsyzkaller reported a warning [0] triggered while destroying immature\nnetns.\n\nrpc_proc_register() was called…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.13, < 5.4.276","linux_kernel >= 5.5, < 5.10.217","linux_kernel >= 5.11, < 5.15.159","linux_kernel >= 5.16, < 6.1.91","linux_kernel >= 6.2, < 6.6.31","linux_kernel >= 6.7, < 6.8.10","linux_kernel = 2.6.12","linux_kernel = 6.9","debian_linux = 10.0"],"patched":["linux_kernel 6.8.10"],"published":"2024-05-30","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:18:26.137","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-36939","references":[{"url":"https://git.kernel.org/stable/c/24457f1be29f1e7042e50a7749f5c2dde8c433c8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8a1f89c98dcc542dd6d287e573523714702e0f9c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8ae63bd858691bee0e2a92571f2fbb36a4d86d65","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9909dde2e53a19585212c32fe3eda482b5faaaa3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b33ca18c3a1190208dfd569c4fa8a2f93084709f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d4891d817350c67392d4731536945f3809a2a0ba","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ea6ce93327bd2c8a0c6cf6f2f0e800f3b778f021","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/24457f1be29f1e7042e50a7749f5c2dde8c433c8","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8a1f89c98dcc542dd6d287e573523714702e0f9c","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8ae63bd858691bee0e2a92571f2fbb36a4d86d65","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/9909dde2e53a19585212c32fe3eda482b5faaaa3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/b33ca18c3a1190208dfd569c4fa8a2f93084709f","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d4891d817350c67392d4731536945f3809a2a0ba","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/ea6ce93327bd2c8a0c6cf6f2f0e800f3b778f021","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00233,"epssPercentile":0.14093,"ingestedAt":"2026-10-15T03:30:12.702Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-06-03T18:55:43.324430Z"},"slug":"CVE-2024-36939","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnfs: Handle error of rpc_proc_register() in nfs_net_init().\n\nsyzkaller reported a warning [0] triggered while destroying immature\nnetns.\n\nrpc_proc_register() was called in init_nfs_fs(), but its error\nhas been ignored since at least the initial commit 1da177e4c3f4\n(\"Linux-2.6.12-rc2\").\n\nRecently, commit d47151b79e32 (\"nfs: expose /proc/net/sunrpc/nfs\nin net namespaces\") converted the procfs to per-netns and made\nthe problem more visible.\n\nEven when rpc_proc_register() fails, nfs_net_init() could succeed,\nand thus nfs_net_exit() will be called while destroying the netns.\n\nThen, remove_proc_entry() will be called for non-existing proc\ndirectory and trigger the warning below.\n\nLet's handle the error of rpc_proc_register() properly in nfs_net_init().\n\n[0]:\nname 'nfs'\nWARNING: CPU: 1 PID: 1710 at fs/proc/generic.c:711 remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711\nModules linked in:\nCPU: 1 PID: 1710 Comm: syz-executor.2 Not tainted 6.8.0-12822-gcd51db110a7e #12\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\nRIP: 0010:remove_proc_entry+0x1bb/0x2d0 fs/proc/generic.c:711\nCode: 41 5d 41 5e c3 e8 85 09 b5 ff 48 c7 c7 88 58 64 86 e8 09 0e 71 02 e8 74 09 b5 ff 4c 89 e6 48 c7 c7 de 1b 80 84 e8 c5 ad 97 ff <0f> 0b eb b1 e8 5c 09 b5 ff 48 c7 c7 88 58 64 86 e8 e0 0d 71 02 eb\nRSP: 0018:ffffc9000c6d7ce0 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff8880422b8b00 RCX: ffffffff8110503c\nRDX: ffff888030652f00 RSI: ffffffff81105045 RDI: 0000000000000001\nRBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000001 R11: ffffffff81bb62cb R12: ffffffff84807ffc\nR13: ffff88804ad6fcc0 R14: ffffffff84807ffc R15: ffffffff85741ff8\nFS:  00007f30cfba8640(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ff51afe8000 CR3: 000000005a60a005 CR4: 0000000000770ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n <TASK>\n rpc_proc_unregister+0x64/0x70 net/sunrpc/stats.c:310\n nfs_net_exit+0x1c/0x30 fs/nfs/inode.c:2438\n ops_exit_list+0x62/0xb0 net/core/net_namespace.c:170\n setup_net+0x46c/0x660 net/core/net_namespace.c:372\n copy_net_ns+0x244/0x590 net/core/net_namespace.c:505\n create_new_namespaces+0x2ed/0x770 kernel/nsproxy.c:110\n unshare_nsproxy_namespaces+0xae/0x160 kernel/nsproxy.c:228\n ksys_unshare+0x342/0x760 kernel/fork.c:3322\n __do_sys_unshare kernel/fork.c:3393 [inline]\n __se_sys_unshare kernel/fork.c:3391 [inline]\n __x64_sys_unshare+0x1f/0x30 kernel/fork.c:3391\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x46/0x4e\nRIP: 0033:0x7f30d0febe5d\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 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 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48\nRSP: 002b:00007f30cfba7cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110\nRAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f30d0febe5d\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c020600\nRBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002\nR13: 000000000000000b R14: 00007f30d104c530 R15: 0000000000000000\n </TASK>\n\n## Affected\n\n- `linux_kernel >= 2.6.13, < 5.4.276`\n- `linux_kernel >= 5.5, < 5.10.217`\n- `linux_kernel >= 5.11, < 5.15.159`\n- `linux_kernel >= 5.16, < 6.1.91`\n- `linux_kernel >= 6.2, < 6.6.31`\n- `linux_kernel >= 6.7, < 6.8.10`\n- `linux_kernel = 2.6.12`\n- `linux_kernel = 6.9`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.8.10`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}