CVE-2024-50257— netfilter: Fix use-after-free in get_info()
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2024-50257
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
netfilter: Fix use-after-free in get_info()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: Fix use-after-free in get_info() ip6table_nat module unload has refcnt warning for UAF. call trace is: WARNING: CPU: 1 PID: 379 at kernel/module/main.c:853 module_put+0x6f/0x80 Modules linked in: ip6table_nat(-) CPU: 1 UID: 0 PID: 379 Comm: ip6tables Not tainted 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:module_put+0x6f/0x80 Call Trace: <TASK> get_info+0x128/0x180 do_ip6t_get_ctl+0x6a/0x430 nf_getsockopt+0x46/0x80 ipv6_getsockopt+0xb9/0x100 rawv6_getsockopt+0x42/0x190 do_sock_getsockopt+0xaa/0x180 __sys_getsockopt+0x70/0xc0 __x64_sys_getsockopt+0x20/0x30 do_syscall_64+0xa2/0x1a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Concurrent execution of module unload and get_info() trigered the warning. The root cause is as follows: cpu0 cpu1 module_exit //mod->state = MODULE_STATE_GOING ip6table_nat_exit xt_unregister_template kfree(t) //removed from templ_list getinfo() t = xt_find_table_lock list_for_each_entry(tmpl, &xt_templates[af]...) if (strcmp(tmpl->name, name)) continue; //table not found try_module_get list_for_each_entry(t, &xt_net->tables[af]...) return t; //not get refcnt module_put(t->me) //uaf unregister_pernet_subsys //remove table from xt_net list While xt_table module was going away and has been removed from xt_templates list, we couldnt get refcnt of xt_table->me. Check module in xt_net->tables list re-traversal to fix it.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于内存释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-50257
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2024-50257
请登录查看更多情报信息。
Same Patch Batch · Linux · 2024-11-09 · 49 CVEs total
| CVE-2024-50248 | ntfs3: Add bounds checking to mi_enum_attr() | |
| CVE-2024-50251 | netfilter: nft_payload: sanitize offset and length before calling skb_checksum() | |
| CVE-2024-50253 | bpf: Check the validity of nr_words in bpf_iter_bits_new() | |
| CVE-2024-50258 | net: fix crash when config small gso_max_size/gso_ipv4_max_size | |
| CVE-2024-50259 | netdevsim: Add trailing zero to terminate the string in nsim_nexthop_bucket_activity_write | |
| CVE-2024-50260 | sock_map: fix a NULL pointer dereference in sock_map_link_update_prog() | |
| CVE-2024-50261 | macsec: Fix use-after-free while sending the offloading packet | |
| CVE-2024-50262 | bpf: Fix out-of-bounds write in trie_get_next_key() | |
| CVE-2024-50256 | netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6() | |
| CVE-2024-50249 | ACPI: CPPC: Make rmw_lock a raw_spin_lock | |
| CVE-2024-50250 | fsdax: dax_unshare_iter needs to copy entire blocks | |
| CVE-2024-50247 | fs/ntfs3: Check if more than chunk-size bytes are written | |
| CVE-2024-50246 | fs/ntfs3: Add rough attr alloc_size check | |
| CVE-2024-50244 | fs/ntfs3: Additional check in ni_clear() | |
| CVE-2024-50245 | fs/ntfs3: Fix possible deadlock in mi_read | |
| CVE-2024-50243 | fs/ntfs3: Fix general protection fault in run_is_mapped_full | |
| CVE-2024-50242 | fs/ntfs3: Additional check in ntfs_file_release | |
| CVE-2024-50241 | NFSD: Initialize struct nfsd4_copy earlier | |
| CVE-2024-50240 | phy: qcom: qmp-usb: fix NULL-deref on runtime suspend | |
| CVE-2024-50239 | phy: qcom: qmp-usb-legacy: fix NULL-deref on runtime suspend |
Showing top 20 of 49 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-50257
No comments yet