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CVE-2026-23098— netrom: fix double-free in nr_route_frame()

CVSS 8.8 · High EPSS 0.02% · P6
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I. Basic Information for CVE-2026-23098

Vulnerability Information
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Vulnerability Title
netrom: fix double-free in nr_route_frame()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netrom: fix double-free in nr_route_frame() In nr_route_frame(), old_skb is immediately freed without checking if nr_neigh->ax25 pointer is NULL. Therefore, if nr_neigh->ax25 is NULL, the caller function will free old_skb again, causing a double-free bug. Therefore, to prevent this, we need to modify it to check whether nr_neigh->ax25 is NULL before freeing old_skb.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于双重释放，可能导致内存损坏。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 25aab6bfc31017a7e52035b99aef5c2b6bde8ffb -
LinuxLinux 2.6.12 -

II. Public POCs for CVE-2026-23098

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III. Intelligence Information for CVE-2026-23098

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Same Patch Batch · Linux · 2026-02-04 · 79 CVEs total

CVE-2026-230667.8 HIGHrxrpc: Fix recvmsg() unconditional requeue
CVE-2026-231057.8 HIGHnet/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
CVE-2026-231037.8 HIGHipvlan: Make the addrs_lock be per port
CVE-2026-230747.8 HIGHnet/sched: Enforce that teql can only be used as root qdisc
CVE-2026-230777.8 HIGHmm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge
CVE-2026-230957.5 HIGHgue: Fix skb memleak with inner IP protocol 0.
CVE-2026-23061can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak
CVE-2026-23053NFS: Fix a deadlock involving nfs_release_folio()
CVE-2026-23064net/sched: act_ife: avoid possible NULL deref
CVE-2026-23065platform/x86/amd: Fix memory leak in wbrf_record()
CVE-2026-23067iommu/io-pgtable-arm: fix size_t signedness bug in unmap path
CVE-2026-23063uacce: ensure safe queue release with state management
CVE-2026-23058can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak
CVE-2026-23057vsock/virtio: Coalesce only linear skb
CVE-2026-23056uacce: implement mremap in uacce_vm_ops to return -EPERM
CVE-2025-71199iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver
CVE-2025-71198iio: imu: st_lsm6dsx: fix iio_chan_spec for sensors without event detection
CVE-2025-71197w1: therm: Fix off-by-one buffer overflow in alarms_store
CVE-2026-23055i2c: riic: Move suspend handling to NOIRQ phase
CVE-2026-23052ftrace: Do not over-allocate ftrace memory

Showing top 20 of 79 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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