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High severity8.8NVD Advisory· Published Feb 4, 2026· Updated Apr 3, 2026

CVE-2026-23098

CVE-2026-23098

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.

Affected products

12
  • Linux/Kernel12 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 11 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=2.6.12.1,<5.10.249
    • cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

News mentions

0

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