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CVE-2026-98382

bpf: Reject dev-bound-only programs on other devices

No known exploitation. EPSS puts it in the 4th percentile. Fixed versions are out.

CVSS —Not scoredEPSS percentile4th0.2% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix1 product4 fixed builds listed below

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • LinuxAffected: ≥ 2b3486bc2d237ec345b3942b7be5deabf8c8fed1, < e57f04194361574493e3e6cf0b9e9c69e4ae9791Upgrade to: e57f04194361574493e3e6cf0b9e9c69e4ae9791Affected: ≥ 2b3486bc2d237ec345b3942b7be5deabf8c8fed1, < 0dceda331180617aeeb22381e8480b37f18ba08bUpgrade to: 0dceda331180617aeeb22381e8480b37f18ba08bAffected: ≥ 2b3486bc2d237ec345b3942b7be5deabf8c8fed1, < 940b626854de200e6187777d42114727daca617cUpgrade to: 940b626854de200e6187777d42114727daca617cAffected: ≥ 2b3486bc2d237ec345b3942b7be5deabf8c8fed1, < bb375f3c5990e29851894f20ebc4b9dbc6676126Upgrade to: bb375f3c5990e29851894f20ebc4b9dbc6676126 + 1 more branchStated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

What it is

From the CVE record

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject dev-bound-only programs on other devices __bpf_offload_dev_match() falls back to comparing offdev pointers after an exact netdev mismatch. Bound-only programs normally have NULL offdevs, so unrelated netdevs compare equal. A bound-only program on an offload-registered netdev can instead inherit a real offdev and match a sibling port. With CAP_BPF and CAP_NET_ADMIN, a caller can use bpf(BPF_LINK_CREATE) with a different target ifindex to run metadata kfuncs specialized for the bound driver on the target driver's xdp_buff. Running a veth-bound program on tun reads beyond tun's bare stack xdp_buff as a veth_xdp_buff. Oops: general protection fault, probably for non-canonical address KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] RIP: 0010:veth_xdp_rx_timestamp (drivers/net/veth.c:1673) Call Trace: ... tun_build_skb (drivers/net/tun.c:1739) tun_get_user (drivers/net/tun.c:1856) tun_chr_write_iter (drivers/net/tun.c:2091) vfs_write (fs/read_write.c:595 fs/read_write.c:687) ksys_write (fs/read_write.c:739) do_syscall_64 (arch/x86/entry/syscall_64.c:84) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Kernel panic - not syncing: Fatal exception in interrupt Restrict non-offloaded programs to exact netdev matches and retain the shared-offdev fallback only for genuinely offloaded multi-port programs.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS4th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.2% chance of exploitation activity in the next 30 days, which ranks it in the 4th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

2 events over 0 days, from the signal feeds we watch.

  1. Publishedrecord updated

Affected products

Sources

References in the record

And 2 more references. See all after sign-in

In the news

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