8.4

CVE-2026-80932: linux

CVSS: 8.4v3.1HighReceived
AliasesUBUNTU-CVE-2026-80932DEBIAN-CVE-2026-80932
Published 11-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80932 is a high (CVSS 8.4) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.8% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 10
OPENSUSE-SU-2026:11805-1OPENSUSE-SU-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:24184-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: flush works in dependency order virtio_vsock_remove() stops the virtqueues and then flushes each work item before freeing the enclosing virtio_vsock. The current order does not account for dependencies between those items: tx_work may queue send_pkt_work, and send_pkt_work may queue rx_work. In particular, send_pkt_work can set restart_rx and release tx_lock. The remove path can then stop the queues and flush rx_work before send_pkt_work queues it. Although the later send_pkt_work flush waits for that producer to finish, nothing waits for the newly queued rx_work, so kfree(vsock) can race with it. KASAN reported: BUG: KASAN: slab-use-after-free in virtio_transport_rx_work+0x487/0x4b0 Read of size 8 at addr ffff888114c2b008 by task kworker/1:1/47 Workqueue: virtio_vsock virtio_transport_rx_work Call Trace: virtio_transport_rx_work+0x487/0x4b0 process_one_work+0x688/0x1120 worker_thread+0x45b/0xd10 Allocated by task 1: virtio_vsock_probe+0xef/0x6b0 Freed by task 84: kfree+0x131/0x3c0 virtio_vsock_remove+0xd1/0x100 Flush the works in producer-to-consumer order. virtio_vsock_vqs_del() has already disabled the queue callbacks and cleared the run flags, so after tx_work and send_pkt_work are drained, no source remains that can queue rx_work after its flush.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

0.00 pp

From 0.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu168 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < e059a14c1067bcc4f7b1947cd09f2baab98e340f | ≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < 531e2ac2dab1ab90a16427c4f9c86663633e9487 | ≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < f3313d952fc380cff53db9a28451a8807aa67b43 | ≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < b9cb4e8ba71c9fbd935d66baa71bbb0b87192c94 | ≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < 2187a56f2fd1715d54daed6392809223c60544f3 | ≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < 165a330a68b5f299d8735f0194c314cb2e571269 | ≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < da5e9f08714c19ba04e6863aca69d40f042f2e04 | ≥ 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872, < 728836ebca239810f164262b10211ef59182f811 | 4.8

3 vendors · 171 products

References

13 links
Show all 13 references