In the Linux kernel, the following vulnerability has been resolved:
net: macb: Use dev_consume_skb_any() to free TX SKBs
The napi_consume_skb() function is not intended to be called in an IRQ
disabled context. However, after commit 6bc8a5098bf4 ("net: macb: Fix
tx_ptr_lock locking"), the freeing of TX SKBs is performed with IRQs
disabled. To resolve the following call trace, use dev_consume_skb_any()
for freeing TX SKBs:
WARNING: kernel/softirq.c:430 at __local_bh_enable_ip+0x174/0x188, CPU#0: ksoftirqd/0/15
Modules linked in:
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 7.0.0-rc4-next-20260319-yocto-standard-dirty #37 PREEMPT
Hardware name: ZynqMP ZCU102 Rev1.1 (DT)
pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __local_bh_enable_ip+0x174/0x188
lr : local_bh_enable+0x24/0x38
sp : ffff800082b3bb10
x29: ffff800082b3bb10 x28: ffff0008031f3c00 x27: 000000000011ede0
x26: ffff000800a7ff00 x25: ffff800083937ce8 x24: 0000000000017a80
x23: ffff000803243a78 x22: 0000000000000040 x21: 0000000000000000
x20: ffff000800394c80 x19: 0000000000000200 x18: 0000000000000001
x17: 0000000000000001 x16: ffff000803240000 x15: 0000000000000000
x14: ffffffffffffffff x13: 0000000000000028 x12: ffff000800395650
x11: ffff8000821d1528 x10: ffff800081c2bc08 x9 : ffff800081c1e258
x8 : 0000000100000301 x7 : ffff8000810426ec x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000008 x1 : 0000000000000200 x0 : ffff8000810428dc
Call trace:
__local_bh_enable_ip+0x174/0x188 (P)
local_bh_enable+0x24/0x38
skb_attempt_defer_free+0x190/0x1d8
napi_consume_skb+0x58/0x108
macb_tx_poll+0x1a4/0x558
__napi_poll+0x50/0x198
net_rx_action+0x1f4/0x3d8
handle_softirqs+0x16c/0x560
run_ksoftirqd+0x44/0x80
smpboot_thread_fn+0x1d8/0x338
kthread+0x120/0x150
ret_from_fork+0x10/0x20
irq event stamp: 29751
hardirqs last enabled at (29750): [] _raw_spin_unlock_irqrestore+0x44/0x88
hardirqs last disabled at (29751): [] _raw_spin_lock_irqsave+0x38/0x98
softirqs last enabled at (29150): [] handle_softirqs+0x504/0x560
softirqs last disabled at (29153): [] run_ksoftirqd+0x44/0x80
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it