CVE-2026-72086: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-72086DEBIAN-CVE-2026-72086
Published 15-08-2026Last modified 17-08-2026
Open JSON

Vulnerability summary

CVE-2026-72086 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.8% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
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 19 · Related 19
SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:4282-1SUSE-SU-2026:4640-1SUSE-SU-2026:4706-1USN-8875-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 17-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Free the command tag on the TMR submit-failure path scsiback_device_action() obtains a command tag in scsiback_get_pend_req() and submits a task-management request with target_submit_tmr(). When target_submit_tmr() fails it returns < 0 and scsiback jumps to the err: label, which sends a response but frees nothing, leaking the tag. Impact: a pvSCSI guest can leak the command tags of a LUN's session, stopping the LUN, by issuing VSCSIIF_ACT_SCSI_ABORT or RESET requests whenever target_submit_tmr() fails. transport_generic_free_cmd() cannot be used here. By the time target_submit_tmr() returns an error it has already run __target_init_cmd() (so se_cmd->cmd_kref is one, not zero), and on its target_get_sess_cmd() error path it has freed se_cmd->se_tmr_req via core_tmr_release_req() while leaving SCF_SCSI_TMR_CDB set and the pointer dangling. Letting the command release run target_free_cmd_mem() would then double-free se_tmr_req. Use the same helper, which returns just the tag, on this path too.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

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) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 2dbcdf33dbf61f44b29adb52338282c3d7840d0e, < 4567ce79fe2f84c3dcc3a91b22a377cf482d33ad | ≥ 2dbcdf33dbf61f44b29adb52338282c3d7840d0e, < 6c01f0439098f00a64b246dc27479602201382f7 | ≥ 2dbcdf33dbf61f44b29adb52338282c3d7840d0e, < 18d4f86816592586b38513543b5e1f9553bc271f | ≥ 2dbcdf33dbf61f44b29adb52338282c3d7840d0e, < fbc1bdede66d0f2cde83b75d6524ce1a815bb69f | ≥ 2dbcdf33dbf61f44b29adb52338282c3d7840d0e, < 255fb7b0cdc947b1c01929c7f133281342a3a6b5 | ≥ 2dbcdf33dbf61f44b29adb52338282c3d7840d0e, < 1357fb32d42ad8da193e6da285f09e6452feabda | ≥ 2dbcdf33dbf61f44b29adb52338282c3d7840d0e, < 66aefc277ebb796ec285d550305535dc3fc0179f | 4.6

3 vendors · 170 products

References

25 links
Show all 25 references