CVE-2026-98052

CVE-2026-98052

High · published September 25, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
2.3
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

net: bcmasp: clear txcb->last before writing each descriptor

bcmasp_xmit() only wrote txcb->last = true for the final fragment

of an SKB; non-final fragments left the field untouched. If a

descriptor slot was reused while it still held a stale true from

a previous SKB (possible when tx_spb_ring_full() underreported

fullness), bcmasp_tx_reclaim() would see last == true mid-SKB and

call dev_consume_skb_any() prematurely, freeing the sk_buff while

its remaining fragments were still in flight.

Unconditionally clear txcb->last before the conditional set so every

descriptor slot starts from a known false state regardless of what a

prior transmission left behind.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00128 · 2.3th percentile
Published
2026-09-25T15:17Z
Affected products (6)
ProductVersionsFixed in
linux/linux_kernel≥ 6.6, < 6.6.1586.6.158
linux/linux_kernel≥ 6.7, < 6.12.1116.12.111
linux/linux_kernel≥ 6.13, < 6.18.536.18.53
linux/linux_kernel≥ 6.19, < 7.2.77.2.7
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (5)
EPSS history
Timeline
  • 27 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 25 SEP 10:24Z
    net: bcmasp: clear txcb->last before writing each descriptor
    cvelistv5