CVE-2026-45846— bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()
Possible ATT&CK Techniques 1AI
T1498 · Network Denial of ServiceAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 571912c69f0ed731bd1e071ade9dc7ca4aa52065< a0f4e4e8e0f5e24ddd83e3d1221732621cf34636 | affected |
571912c69f0ed731bd1e071ade9dc7ca4aa52065< 35a115a204be08f97450b0389413e218268ef4a2 | affected | ||
571912c69f0ed731bd1e071ade9dc7ca4aa52065< 74a02921c48fcd35a7881956c9e5c52b86595f5d | affected | ||
571912c69f0ed731bd1e071ade9dc7ca4aa52065< 638905520fc4fae6a80991563f264131545ba3df | affected | ||
571912c69f0ed731bd1e071ade9dc7ca4aa52065< aa6c6d9ee064aabfede4402fd1283424e649ca19 | affected | ||
5.7 | affected | ||
< 5.7 | unaffected | ||
6.6.141≤ 6.6.* | unaffected | ||
| … +4 more rows | |||
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-45846
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View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() bareudp_fill_metadata_dst() passes bareudp->sock to udp_tunnel6_dst_lookup() in the IPv6 path without a NULL check. The socket is only created in bareudp_open() and NULLed in bareudp_stop(), so calling this function while the device is down triggers a NULL dereference via sock->sk. BUG: kernel NULL pointer dereference, address: 0000000000000018 RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160) Call Trace: <TASK> bareudp_fill_metadata_dst (drivers/net/bareudp.c:532) do_execute_actions (net/openvswitch/actions.c:901) ovs_execute_actions (net/openvswitch/actions.c:1589) ovs_packet_cmd_execute (net/openvswitch/datapath.c:700) genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114) genl_rcv_msg (net/netlink/genetlink.c:1209) netlink_rcv_skb (net/netlink/af_netlink.c:2550) </TASK> Add a NULL check returning -ESHUTDOWN, consistent with the xmit paths in the same driver.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-45846
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-45846
请登录查看更多情报信息。
Patches & Fixes for CVE-2026-45846 (5)
Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total
| CVE-2026-45916 | power: supply: sbs-battery: Fix use-after-free in power_supply_changed() | |
| CVE-2026-45933 | bpf: Preserve id of register in sync_linked_regs() | |
| CVE-2026-45932 | bpf: Fix tcx/netkit detach permissions when prog fd isn't given | |
| CVE-2026-45931 | accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() | |
| CVE-2026-45930 | net: mctp: ensure our nlmsg responses are initialised | |
| CVE-2026-45929 | ovpn: fix possible use-after-free in ovpn_net_xmit | |
| CVE-2026-45928 | media: chips-media: wave5: Fix memory leak on codec_info allocation failure | |
| CVE-2026-45927 | bpf: Require frozen map for calculating map hash | |
| CVE-2026-45926 | rust: pwm: Fix potential memory leak on init error | |
| CVE-2026-45925 | thermal/of: Fix reference leak in thermal_of_cm_lookup() | |
| CVE-2026-45924 | ksmbd: call ksmbd_vfs_kern_path_end_removing() on some error paths | |
| CVE-2026-45923 | net: usb: catc: enable basic endpoint checking | |
| CVE-2026-45922 | RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler | |
| CVE-2026-45921 | mtd: parsers: Fix memory leak in mtd_parser_tplink_safeloader_parse() | |
| CVE-2026-45920 | ext4: fix dirtyclusters double decrement on fs shutdown | |
| CVE-2026-45919 | sched/rt: Skip currently executing CPU in rto_next_cpu() | |
| CVE-2026-45918 | ovpn: tcp - don't deref NULL sk_socket member after tcp_close() | |
| CVE-2026-45917 | ipvs: do not keep dest_dst if dev is going down | |
| CVE-2026-45906 | power: supply: pf1550: Fix use-after-free in power_supply_changed() | |
| CVE-2026-45904 | powerpc/eeh: fix recursive pci_lock_rescan_remove locking in EEH event handling |
Showing top 20 of 276 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf - CVE-2026-46238
batman-adv: stop caching unowned originator pointers in BAT - CVE-2026-46237
drm/amdgpu/vcn3: Avoid overflow on msg bound check
Same vendor: Linux
- CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf - CVE-2026-46238
batman-adv: stop caching unowned originator pointers in BAT - CVE-2026-46237
drm/amdgpu/vcn3: Avoid overflow on msg bound check
V. Comments for CVE-2026-45846
No comments yet