CVE-2026-98572— bpf: Fix immediate JMP JEQ/JNE on MIPS32
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Linux 内核中，以下漏洞已得到修复： bpf：修复 MIPS32 架构下立即数跳转指令 JEQ/JNE 的问题 在代码生成中，错误地使用了 指令而非 指令，导致立即数值 1 被误解释为寄存器 。当立即数操作数为负数时，这会使比较结果失效。需要注意的是， 寄存器被映射为 ，该寄存器用于常量模糊化（constant blinding）。 修复方法是将指令更正为使用立即数形式。 该问题是在通过 QEMU 模拟的 MIPS32r1 架构上运行 测试时发现。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-98572
Vulnerability Information
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Vulnerability Title
bpf: Fix immediate JMP JEQ/JNE on MIPS32
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix immediate JMP JEQ/JNE on MIPS32
An addu instruction was emitted instead of addiu, causing the immediate
value 1 to be interpreted as register $at. This made the comparison
result invalid when the immediate operand was negative. Note that $at
is mapped to BPF_REG_AX, which is used for constant blinding.
Fix the instruction to use the immediate form.
Found with test_bpf on MIPS32r1 emulated by QEMU.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-98572
| # | POC Description | Source Link | Shenlong Link |
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Other References for CVE-2026-98572 (6)
Same Patch Batch · Linux · 2026-10-18 · 436 CVEs total
| CVE-2026-98583 | nfc: nfcmrvl: validate helper command length before pull | |
| CVE-2026-98568 | vxlan: use one headroom snapshot for neighbour replies | |
| CVE-2026-98570 | net: ipv6: keep room for the mac header in dst_dev_overhead() | |
| CVE-2026-98571 | net: stmmac: clear stale buf->page after recycling on skb build failure | |
| CVE-2026-98573 | net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6() | |
| CVE-2026-98574 | net: bcmgenet: stop Tx NAPI before disabling the queues | |
| CVE-2026-98575 | nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid() | |
| CVE-2026-98576 | nfc: llcp: fix slab-out-of-bounds reads when logging service names | |
| CVE-2026-98577 | nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap() | |
| CVE-2026-98578 | nfc: st21nfca: validate ISO15693 inventory length | |
| CVE-2026-98579 | nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure | |
| CVE-2026-98580 | nfc: llcp: Fix race condition in accept_queue lifecycle | |
| CVE-2026-98581 | nfc: llcp: Fix list corruption / refcount desync in nfc_llcp_recv_dm() | |
| CVE-2026-98582 | nfc: st21nfca: validate received frame size | |
| CVE-2026-98594 | tg3: clean up PHYLIB resources on probe failure | |
| CVE-2026-98591 | bpf: Fix bounds check for skb-backed dynptrs | |
| CVE-2026-98592 | net: spacemit: clear TX descriptor on fragment mapping failure | |
| CVE-2026-98593 | s390/debug: Fix NULL pointer dereference in debug_info_copy() | |
| CVE-2026-98590 | bpf: Fix bpf_sock context code generation | |
| CVE-2026-98595 | udp: remove a disconnected socket from the 4-tuple hash table |
Showing top 20 of 436 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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CVE-2026-98868
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dm-pcache: bound the logical key offset from persistent memo -
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sched/cache: Introduce task_struct->sched_cache_grp to fix U -
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V. Comments for CVE-2026-98572
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