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CVE-2026-93135— bpf: Reject programs with inlined helpers if JIT is not available

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，以下漏洞已被修复： bpf：当 JIT 不可用时，拒绝包含内联辅助函数调用的程序 当某个架构（如 LoongArch、ARM64 和 RISC-V）实现了 时，验证器会在 中跳过对辅助函数调用偏移量（ ）的重写。这是因为该辅助函数预期稍后会被 JIT 编译器内联。因此， 会保留为原始的辅助函数枚举 ID。 然而，如果运行时禁用了 JIT（ ），或者 JIT 编译在运行时动态失败（例如由于内存不足 OOM），该程序将回退到 BPF 解释器执行。 当解释器执行 且 仍是未修补的原始 ID 时，程

AI Predicted 8.8 Difficulty: Moderate EPSS 0.20% · P9

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 2ddec2c80b4402c293c7e6e0881cecaaf77e8cec< 21c6445366795fa3a89954e1d318e7c8afdef843 affected
2ddec2c80b4402c293c7e6e0881cecaaf77e8cec< f1c27922576edccb99d0257827d09bd05c0304a6 affected
6.10 affected
< 6.10 unaffected
7.2.6≤ 7.2.* unaffected
7.3-rc1≤ * unaffected
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I. Basic Information for CVE-2026-93135

Vulnerability Information
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Vulnerability Title
bpf: Reject programs with inlined helpers if JIT is not available
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Reject programs with inlined helpers if JIT is not available When an architecture (such as LoongArch, ARM64, and RISC-V) implements bpf_jit_inlines_helper_call(), the verifier skips rewriting the helper call offset (insn->imm) in bpf_do_misc_fixups(). This is because the helper is expected to be inlined by the JIT compiler later. Therefore, insn->imm remains as the raw helper enum ID. However, if JIT is disabled at runtime (net.core.bpf_jit_enable=0) or if JIT compilation fails dynamically (e.g., due to OOM), the program falls back to the BPF interpreter. When the interpreter executes (__bpf_call_base + insn->imm) with the unpatched raw ID, it jumps into an invalid address space, triggering an instruction alignment fault or a kernel panic. Although these helpers have valid C implementations in the kernel, the omission of offset rewriting makes runtime interpreter fallback fatal. Fix this by setting 'prog->jit_required = 1' when helper call rewriting is skipped for JIT inlining. This ensures that such programs are safely rejected if JIT is not available, preventing the runtime kernel panic.
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2ddec2c80b4402c293c7e6e0881cecaaf77e8cec ~ 21c6445366795fa3a89954e1d318e7c8afdef843 -
Linux Linux 6.10 -

II. Public POCs for CVE-2026-93135

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III. Intelligence Information for CVE-2026-93135

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Patches & Fixes for CVE-2026-93135 (2)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93135

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